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