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