Organ System

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created 9 years ago by dorisperu20
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Major Functions
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1

Integumentary (Skin)

- Protects deeper organs from mechanical, chemical, and bacterial injury, and desiccation (dry out).
- Excretes salts and urea.
- Aids in regulation of body temperature.
- Produces vitamin D.

2

Skeletal

- Body support and protection of internal organs.
- Provides levers for muscular action.
- Cavities provide a site for blood cell formation.

3

Muscular

- Primary function is to contract or shorten; in doing so, skeletal muscles allow locomotion (running, walking, etc.), grasping and manipulation of the environment, and facial expression.
- Generates heat.

4

Nervous System

- Allows body to detect changes in its internal and external environment and to respond to such information by activating appropriate muscles or glands.
- Helps maintain homeostasis of the body via rapid transmission of electrical signals.

5

Endocrine

- Helps maintain body homeostasis, promotes growth and development; produces chemical "messengers" (hormones) that travel in the blood to exert their effect(s) on various "target organs" of the body.

6

Cardiovascular

- Primarily a transport system that carries blood containing oxygen, carbon dioxide, nutrients, waste, ions, hormones, and other substances to and from the tissue cells where exchanges are made; blood is propelled through the blood vessels by the pumping action of the heart.

7

Lymphatic/Immunity

- Picks up fluid leaked from the blood vessels and returns it to the blood.
- Cleanses blood of pathogens and other debris.
- Houses lymphocytes that act via the immune response to protect the body from foreign substances (antigen).

8

Respiratory

- Keeps the blood continuously supplied with oxygen while removing carbon dioxide.
- Contributes to the acid-base balance of the blood via its carbonic acid-bicarbonate buffer system.

9

Digestive

- Breaks down ingested foods to minute particles, which can be absorbed into the blood for delivery to the body cells.
- Undigested residue removed from the body as feces.

10

Urinary

- Rids the body of nitrogen-containing wastes (urea, uric acid and ammonia), which result from the breakdown of proteins and nucleic acids by body cells.
- Maintain water, electrolyte, and acid-base balance of blood/

11

Reproductive

- Provides germ cells (sperm in male) for perpetuation of the species.
- Provides germ cells (eggs in females); the female uterus houses the developing fetus until birth , mammary gland provide nutrition for the infant.