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