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