Question

1. name the major organ systems, and describe the general functions of each. (p. 12) 19. list the major organs that comprise each organ system. (p. 12)

Explanation:

Question 18

The major organ systems in the human body and their general functions are as follows:

1. Integumentary System: Protects the body from external damage, helps regulate body temperature, and is involved in sensation (touch, pain, temperature). It includes the skin, hair, nails, and associated glands.
2. Skeletal System: Provides structural support, protects internal organs, enables movement (in conjunction with muscles), produces blood cells (hematopoiesis), and stores minerals (like calcium and phosphorus). Composed of bones, cartilage, ligaments, and tendons.
3. Muscular System: Facilitates movement (voluntary and involuntary), maintains posture, and generates heat. There are three types: skeletal (attached to bones, voluntary), smooth (in organs, involuntary), and cardiac (in the heart, involuntary).
4. Nervous System: Coordinates and controls body activities, detects and processes sensory information, and initiates responses. It consists of the central nervous system (brain and spinal cord) and the peripheral nervous system (nerves outside the CNS).
5. Endocrine System: Regulates body functions through the secretion of hormones. These hormones act as chemical messengers to control growth, metabolism, reproduction, and other processes. Major glands include the pituitary, thyroid, adrenal, pancreas, and gonads.
6. Cardiovascular System: Transports oxygen, nutrients, hormones, and waste products throughout the body. It includes the heart (pump) and blood vessels (arteries, veins, capillaries).
7. Lymphatic System/Immune System: Helps maintain fluid balance, absorbs fats from the digestive tract, and defends the body against infections and diseases. Comprises lymphatic vessels, lymph nodes, spleen, thymus, and lymphoid tissues.
8. Respiratory System: Facilitates gas exchange (oxygen intake and carbon dioxide removal) between the body and the environment. Includes the nose, pharynx, larynx, trachea, bronchi, and lungs.
9. Digestive System: Breaks down food into absorbable nutrients, absorbs those nutrients into the bloodstream, and eliminates undigested waste. Organs include the mouth, esophagus, stomach, small intestine, large intestine, liver, gallbladder, and pancreas.
10. Urinary System: Filters blood to remove waste products and excess water, forming urine. It helps regulate blood volume, blood pressure, and electrolyte balance. Consists of the kidneys, ureters, urinary bladder, and urethra.
11. Reproductive System: Produces gametes (sperm in males, eggs in females) and facilitates reproduction. In males, it includes the testes, epididymis, vas deferens, prostate, and penis. In females, it includes the ovaries, fallopian tubes, uterus, vagina, and external genitalia.

The major organs of each organ system are:

1. Integumentary System: Skin, hair, nails, sweat glands, sebaceous glands.
2. Skeletal System: Bones (e.g., skull, ribs, vertebrae, femur), cartilage (e.g., in joints, nose), ligaments (connect bones), tendons (connect muscles to bones).
3. Muscular System: Skeletal muscles (e.g., biceps, quadriceps), smooth muscles (e.g., in stomach, intestines, blood vessels), cardiac muscle (heart).
4. Nervous System: Brain (cerebrum, cerebellum, brainstem), spinal cord, peripheral nerves (cranial nerves, spinal nerves).
5. Endocrine System: Pituitary gland, thyroid gland, parathyroid glands, adrenal glands, pancreas (islets of Langerhans), ovaries (in females), testes (in males).
6. Cardiovascular System: Heart, arteries (e.g., aorta, carotid arteries), veins (e.g., vena cava, jugular veins), capillaries.
7. Lymphatic/Immune System: Lymphatic vessels, lymph nodes (e.g., cervical, axillary, inguinal nodes), spleen, thymus, tonsils, adenoids, Peyer's patches (in intestines).
8. Respiratory System: Nose, pharynx, larynx, trachea, bronchi (primary, secondary, tertiary), lungs (alveoli for gas exchange).
9. Digestive System: Mouth (teeth, tongue), salivary glands, esophagus, stomach, small intestine (duodenum, jejunum, ileum), large intestine (cecum, colon, rectum), liver, gallbladder, pancreas.
10. Urinary System: Kidneys, ureters, urinary bladder, urethra.
11. Reproductive System:

• Male: Testes, epididymis, vas deferens, seminal vesicles, prostate gland, bulbourethral glands, penis.
• Female: Ovaries, fallopian tubes, uterus, cervix, vagina, labia, clitoris, mammary glands (breasts).

Answer:

• Integumentary System: Protects, regulates temperature, senses.
• Skeletal System: Supports, protects, enables movement, produces blood cells, stores minerals.
• Muscular System: Enables movement, maintains posture, generates heat.
• Nervous System: Coordinates, controls, processes sensory info, initiates responses.
• Endocrine System: Regulates via hormones (growth, metabolism, reproduction, etc.).
• Cardiovascular System: Transports oxygen, nutrients, hormones, waste.
• Lymphatic/Immune System: Maintains fluid balance, absorbs fats, defends against disease.
• Respiratory System: Facilitates gas exchange (O₂ in, CO₂ out).
• Digestive System: Breaks down food, absorbs nutrients, eliminates waste.
• Urinary System: Filters blood, removes waste, regulates fluid/electrolyte balance.
• Reproductive System: Produces gametes, facilitates reproduction.

Question 19