Human Body Systems Flashcards: 11 Organ Systems, Organs & Functions
Study 105 cards on organization levels, 11 organ systems, representative organs, core functions, and homeostasis. This model counts integumentary separately and combines lymphatic/immune.
เกี่ยวกับเด็คนี้
Human Body Systems Flashcards: 11 Organ Systems, Organs & Functions
Build a practical overview of the human body before moving into regional anatomy. These 105 English flashcards start with cells, tissues, organs, organ systems, and homeostasis, then cover the main function and representative structures of each system.
The 11-system model
Anatomy resources do not all group the systems the same way. NCI SEER Training's introductory overview lists ten systems because it does not count the integumentary system separately. This deck uses a common introductory 11-system convention: integumentary; skeletal; muscular; nervous; endocrine; cardiovascular; lymphatic/immune; respiratory; digestive; urinary; and reproductive. It counts integumentary separately and combines lymphatic and immune functions.
What the cards practice
- Recall each system's main job.
- Connect representative organs and structures with their system or role.
- Use a limited set of bounded reverse prompts where producing the system or organ is genuinely useful.
- Explain a few clear homeostasis links, including movement, gas transport, fat absorption, temperature control, blood composition, sensation, and digestive propulsion.
The deck does not mechanically reverse every fact or treat shared organs as belonging exclusively to one system. The pancreas, gonads, diaphragm, skin, liver, and other cross-system structures are described by the role being reviewed.
Learning order
Organization levels come first. The cards then make repeated passes through all 11 systems: main functions before structures, and structures before selected reverse recall. Each system returns only after ten unrelated cards, so similar prompts do not cue one another. The final ten cards connect systems through homeostasis.
Scope
This is an introductory anatomy and physiology overview. It excludes diagnosis, treatment, clinical advice, detailed pathology, medical procedures, image-identification practice, exhaustive organ lists, and advanced pathway detail. It supports study but does not replace a full course, lab, or medical guidance.
Facts were checked primarily against the NCI SEER Training anatomy modules, with focused cross-checks from NIAMS on skin, NIAID on the immune system, and NIDDK overviews of digestion and the urinary tract.
The prompts, answers, sequence, metadata, and generated cover were independently created from common knowledge and original work. No competitor cards, textbook prose, source figures, logos, or third-party media were copied.
The Common knowledge · CC0 1.0 label applies to the original wording, organization, metadata, and cover to the extent applicable rights exist. It does not claim ownership of anatomical facts.
Source review date: August 31, 2026.
การ์ดในเด็คนี้
การ์ด 1
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Why can two anatomy resources give different counts for the body's organ systems?
คำตอบ
Classification conventions vary. This deck uses 11 systems by counting the integumentary system separately and combining lymphatic and immune functions.
การ์ด 2
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What is the usual order of biological organization from simplest to most complex in the human body?
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Cells → tissues → organs → organ systems → organism.
การ์ด 3
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What is a cell in the body's organization hierarchy?
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The basic living unit of the body.
การ์ด 4
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What is a tissue?
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A group of similar cells, together with their surrounding material, organized to perform a shared function.
การ์ด 5
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What is an organ?
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A structure made of multiple tissue types working together for one or more specific functions.
การ์ด 6
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What is an organ system?
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A group of organs and related structures that cooperate in major body functions.
การ์ด 7
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What does homeostasis mean in introductory physiology?
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Maintaining a relatively stable internal environment while conditions inside or outside the body change.
การ์ด 8
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What is the integumentary system's main job?
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It forms the body's outer barrier, limits water loss, helps regulate temperature, and provides sensation.
การ์ด 9
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What are the skeletal system's main jobs?
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Support and protect the body, provide levers for movement, store minerals, and house blood-forming marrow.
การ์ด 10
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What is the muscular system's main job?
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It produces body movement through muscle contraction and also supports posture, joint stability, and heat production.
การ์ด 11
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What is the nervous system's main job?
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It detects changes, integrates information, and coordinates rapid responses through sensory, processing, and motor activity.
การ์ด 12
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What is the endocrine system's main job?
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It uses hormones to regulate processes such as growth, metabolism, development, reproduction, and long-term homeostasis.
การ์ด 13
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What is the cardiovascular system's main job?
คำตอบ
It circulates blood to transport gases, nutrients, hormones, heat, cells, and wastes around the body.
การ์ด 14
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What are the lymphatic/immune system's main jobs in this deck's combined model?
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It returns excess tissue fluid to the blood, supports immune defense, and carries absorbed fats from the small intestine.
การ์ด 15
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What is the respiratory system's main job?
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It brings oxygen into contact with the blood and removes carbon dioxide through gas exchange.
การ์ด 16
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What is the digestive system's main job?
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It breaks food into absorbable components, absorbs nutrients and water, and eliminates material that was not digested.
การ์ด 17
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What is the urinary system's main job?
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It removes wastes in urine and regulates body-fluid volume, electrolytes, and acid-base balance.
การ์ด 18
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What is the reproductive system's main job?
คำตอบ
It produces gametes and reproductive hormones and provides structures that support fertilization and, in the female system, development before birth.
การ์ด 19
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Which organ system includes the skin?
คำตอบ
The integumentary system.
การ์ด 20
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Which organ system includes bones?
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The skeletal system.
การ์ด 21
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In the conventional organ-system model, what structures make up the muscular system?
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Primarily skeletal muscles and their associated tendons. Smooth and cardiac muscle tissue also drives movement inside other organ systems.
การ์ด 22
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Which structures make up the central nervous system?
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The brain and spinal cord.
การ์ด 23
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How do endocrine glands release hormones?
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They release hormones into the surrounding fluid and blood rather than through ducts to a surface.
การ์ด 24
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What does the heart do in the cardiovascular system?
คำตอบ
It pumps blood through the pulmonary and systemic circuits.
การ์ด 25
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What is lymph?
คำตอบ
Interstitial fluid after it enters lymphatic capillaries and begins moving through lymphatic vessels.
การ์ด 26
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What route does inhaled air follow from the nose toward the gas-exchange surfaces?
คำตอบ
Nasal cavity → pharynx → larynx → trachea → bronchi → smaller airways → alveoli.
การ์ด 27
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What is the gastrointestinal tract?
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A continuous muscular tube from the mouth to the anus that includes the esophagus, stomach, small intestine, and large intestine.
การ์ด 28
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Which four structures form the urinary tract?
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The kidneys, ureters, urinary bladder, and urethra.
การ์ด 29
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What are the gonads, and what do they produce?
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The ovaries and testes. They produce gametes and reproductive hormones.
การ์ด 30
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Which skin layer is the outer protective barrier?
คำตอบ
The epidermis.
การ์ด 31
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What is cartilage's main role in the skeletal system?
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It provides flexible support and smooth, low-friction surfaces at many joints.
การ์ด 32
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What does a tendon connect?
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Muscle to bone.
การ์ด 33
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What structures make up the peripheral nervous system?
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Nerves, ganglia, and sensory endings outside the brain and spinal cord.
การ์ด 34
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What is the pituitary gland's broad endocrine role?
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It releases hormones that regulate several other endocrine glands and body functions.
การ์ด 35
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In what direction do arteries carry blood?
คำตอบ
Away from the heart.
การ์ด 36
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What do lymph nodes do?
คำตอบ
They filter lymph and serve as meeting points where immune cells sample material and coordinate responses.
การ์ด 37
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What are alveoli?
คำตอบ
Tiny air sacs in the lungs where oxygen and carbon dioxide are exchanged with the blood.
การ์ด 38
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What is the esophagus's digestive role?
คำตอบ
It transports swallowed material from the pharynx to the stomach.
การ์ด 39
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What do the kidneys do?
คำตอบ
They filter blood, remove wastes and excess substances into urine, and regulate water, electrolytes, and acid-base balance.
การ์ด 40
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What do the ovaries produce?
คำตอบ
Oocytes, commonly called egg cells, and hormones including estrogens and progesterone.
การ์ด 41
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Which skin layer contains most skin blood vessels, sensory endings, hair follicles, and glands?
คำตอบ
The dermis.
การ์ด 42
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What does a ligament connect?
คำตอบ
Bone to bone, helping stabilize a joint.
การ์ด 43
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What makes skeletal muscle suited for moving the skeleton?
คำตอบ
It contracts under voluntary control and pulls on bones through tendons.
การ์ด 44
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What do sensory receptors contribute to the nervous system?
คำตอบ
They detect changes inside or outside the body and convert them into signals the nervous system can process.
การ์ด 45
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What is the thyroid gland's broad endocrine role?
คำตอบ
It releases hormones that help regulate metabolic rate, growth, and development.
การ์ด 46
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In what direction do veins carry blood?
คำตอบ
Toward the heart.
การ์ด 47
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What is the spleen's lymphatic/immune role?
คำตอบ
It filters blood, removes aging blood cells, and supports immune responses to material carried in the bloodstream.
การ์ด 48
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What is the trachea's respiratory role?
คำตอบ
It conducts air from the larynx toward the bronchi and helps keep the airway open.
การ์ด 49
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What is the stomach's main digestive role?
คำตอบ
It stores and mixes food while beginning substantial chemical digestion of proteins.
การ์ด 50
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What do the ureters do?
คำตอบ
They carry urine from the kidneys to the urinary bladder.
การ์ด 51
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What do the testes produce?
คำตอบ
Sperm cells and hormones, especially testosterone.
การ์ด 52
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How do sweat glands help regulate body temperature?
คำตอบ
They release sweat; evaporation from the skin removes heat.
การ์ด 53
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What is red bone marrow's main role?
คำตอบ
It produces blood cells, including red blood cells, many white blood cells, and platelets.
105 การ์ด
Human Body Systems Flashcards: 11 Organ Systems, Organs & Functions
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การ์ด 54
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What does smooth muscle do in the walls of hollow organs and blood vessels?
คำตอบ
Its involuntary contractions move contents through organs or adjust a vessel's diameter.
การ์ด 55
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What is a neuron's basic job?
คำตอบ
To receive, process, and transmit information using electrical and chemical signals.
การ์ด 56
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What is the broad endocrine role of the parathyroid glands?
คำตอบ
They release parathyroid hormone, a key regulator of calcium levels in the blood.
การ์ด 57
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What is the main job of capillaries?
คำตอบ
They provide thin-walled exchange sites between blood and surrounding tissues.
การ์ด 58
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What is the thymus's immune role?
คำตอบ
It is where T lymphocytes mature.
การ์ด 59
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What do the bronchi do?
คำตอบ
They carry air from the trachea into the lungs and branch into progressively smaller airways.
การ์ด 60
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What is the small intestine's main digestive role?
คำตอบ
It completes most chemical digestion and is the main site where nutrients are absorbed.
การ์ด 61
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What is the urinary bladder's main role?
คำตอบ
It stores urine until urination.
การ์ด 62
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What do the uterine tubes do?
คำตอบ
They transport an oocyte from an ovary toward the uterus and are the usual site of fertilization.
การ์ด 63
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What roles do hair and hair follicles serve in the integumentary system?
คำตอบ
They contribute to protection and sensation; follicles also help renew skin after minor injury.
การ์ด 64
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How do the axial and appendicular skeletons differ?
คำตอบ
The axial skeleton forms the body's central axis; the appendicular skeleton includes the limbs and the girdles that attach them.
การ์ด 65
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Where is cardiac muscle found?
คำตอบ
In the wall of the heart, where it contracts involuntarily to pump blood.
การ์ด 66
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Why can the nervous system coordinate rapid responses?
คำตอบ
It sends fast electrical signals along neurons and uses chemical signals across synapses.
การ์ด 67
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What is the broad endocrine role of the adrenal glands?
คำตอบ
They release hormones involved in stress responses, metabolism, salt balance, and blood-pressure regulation.
การ์ด 68
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Why is blood considered part of the cardiovascular system?
คำตอบ
It is the circulating transport tissue moved through the heart and blood vessels.
การ์ด 69
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What immune role do the tonsils serve?
คำตอบ
They sample material entering through the mouth and nose and help start immune responses.
การ์ด 70
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How does the diaphragm support the respiratory system?
คำตอบ
Its contraction enlarges the thoracic cavity, drawing air into the lungs. It is skeletal muscle working in ventilation.
การ์ด 71
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What is the large intestine's main digestive role?
คำตอบ
It absorbs water and electrolytes and compacts the remaining material into feces.
การ์ด 72
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What does the urethra do?
คำตอบ
It carries urine from the bladder to the outside of the body.
การ์ด 73
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What is the uterus's main reproductive role?
คำตอบ
It receives an implanted embryo and supports development before birth.
การ์ด 74
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What do nails contribute to the integumentary system?
คำตอบ
They protect the tips of fingers and toes and provide a firm counter-surface for fine grasping.
การ์ด 75
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Which skeletal structures protect the brain, spinal cord, heart, and lungs?
คำตอบ
The skull protects the brain, vertebrae protect the spinal cord, and the rib cage helps protect the heart and lungs.
การ์ด 76
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How does skeletal muscle contribute to posture and body temperature?
คำตอบ
Ongoing small contractions stabilize posture, while muscle activity releases heat.
การ์ด 77
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How do the central and peripheral nervous systems differ?
คำตอบ
The central nervous system is the brain and spinal cord; the peripheral system connects them with the rest of the body.
การ์ด 78
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What do the pancreatic islets contribute to the endocrine system?
คำตอบ
They release hormones, including insulin and glucagon, that help regulate blood glucose.
การ์ด 79
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How do pulmonary and systemic circulation differ?
คำตอบ
Pulmonary circulation moves blood between the heart and lungs; systemic circulation moves it between the heart and the rest of the body.
การ์ด 80
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What do intestinal lacteals absorb?
คำตอบ
Dietary fats and fat-soluble vitamins from the small intestine into the lymphatic circulation.
การ์ด 81
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What is external respiration?
คำตอบ
The exchange of oxygen and carbon dioxide between air in the lungs and blood in pulmonary capillaries.
การ์ด 82
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Which major accessory organs add secretions to the digestive tract?
คำตอบ
The salivary glands, liver, gallbladder, and pancreas.
การ์ด 83
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How do the kidneys help keep body fluids stable?
คำตอบ
They adjust how much water, electrolytes, acids, and bases leave the body in urine.
การ์ด 84
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What is the epididymis's reproductive role?
คำตอบ
It is the coiled duct where sperm mature and are stored before entering the ductus deferens.
การ์ด 85
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Which organ system includes hair, nails, sweat glands, and oil glands?
คำตอบ
The integumentary system.
การ์ด 86
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Which organ system stores most of the body's calcium?
คำตอบ
The skeletal system, mainly in the mineral matrix of bone.
การ์ด 87
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Which organ system produces most visible body movement through contraction?
คำตอบ
The muscular system, working with the skeleton and nervous system.
การ์ด 88
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Which organ system coordinates rapid sensory and motor responses?
คำตอบ
The nervous system.
การ์ด 89
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Which organs have both reproductive and endocrine roles?
คำตอบ
The ovaries and testes: they produce gametes for the reproductive system and hormones for endocrine signaling.
การ์ด 90
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Which organ system consists of the heart, blood, and a closed network of vessels?
คำตอบ
The cardiovascular system.
การ์ด 91
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Which organ system returns excess interstitial fluid to the blood and includes lymph nodes?
คำตอบ
The lymphatic/immune system.
การ์ด 92
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Which organ system removes carbon dioxide and thereby helps regulate blood pH?
คำตอบ
The respiratory system.
การ์ด 93
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Why are the liver, gallbladder, and pancreas called accessory digestive organs?
คำตอบ
Food does not pass through them, but their secretions support digestion in the gastrointestinal tract.
การ์ด 94
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Which urinary organ stores urine before it leaves the body?
คำตอบ
The urinary bladder.
การ์ด 95
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Which reproductive organ supports an implanted embryo and fetal development?
คำตอบ
The uterus.
การ์ด 96
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How do the skeletal and muscular systems work together to produce movement?
คำตอบ
Skeletal muscles contract and pull on bones, which act as levers across joints.
การ์ด 97
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How do the respiratory and cardiovascular systems cooperate in gas transport?
คำตอบ
The respiratory system exchanges gases in the lungs; the cardiovascular system carries oxygen to tissues and returns carbon dioxide to the lungs.
การ์ด 98
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How do the nervous and endocrine systems differ in body control?
คำตอบ
The nervous system usually sends fast, targeted signals; the endocrine system sends hormones through the blood for generally slower, longer-lasting effects.
การ์ด 99
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How do the digestive and lymphatic systems cooperate in fat absorption?
คำตอบ
Lacteals in small-intestinal villi absorb dietary fats and carry them into the lymphatic circulation.
การ์ด 100
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How do the integumentary and muscular systems help regulate body temperature?
คำตอบ
Skin promotes heat loss through sweating and blood-flow changes, while muscle contraction produces heat.
การ์ด 101
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How does the urinary system support cardiovascular homeostasis?
คำตอบ
By adjusting water and electrolyte excretion, the kidneys help regulate blood volume, composition, and pressure.
การ์ด 102
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How do the endocrine and reproductive systems cooperate?
คำตอบ
Hormones regulate reproductive development and function, while the gonads produce both gametes and hormones.
การ์ด 103
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How do the skeletal and lymphatic/immune systems connect through bone marrow?
คำตอบ
Red bone marrow produces blood cells, including white blood cells that take part in immune defense.
การ์ด 104
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How do the integumentary and nervous systems cooperate in sensation?
คำตอบ
Receptors in the skin detect touch, temperature, pressure, and potentially harmful stimuli, then sensory nerves carry those signals toward the central nervous system.
การ์ด 105
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How do the muscular and digestive systems cooperate to move food?
คำตอบ
Smooth muscle in the digestive tract produces coordinated contractions that propel and mix its contents.
105 การ์ด
Human Body Systems Flashcards: 11 Organ Systems, Organs & Functions
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