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Flashcards in Systems Deck (17):
1

Nervous system

the system of nerves and nerve centres in an animal in which messages are sent as an electrical and then a chemical impulse. It comprises the central nervous system and the peripheral nervous system.

2

Central nervous system

the part of the nervous system composed of the brain and spinal cord

3

Peripheral nervous system

made up of sensory and motor neurons. It connects the central nervous system to the rest of the body, and detects and responds to change.

4

Electrical impulses

nerve signals that pass rapidly from the receptors and along the peripheral nervous system to the central nervous system

5

Neurotransmitters

chemical released from the axon terminals into the synapse between your nerve cells (neurons) during a nerve impulse

6

Synapses

the gap between adjoining neurons across which electrical nervous impulses are sent

7

Endocrine system

the body system of glands that produce and secrete hormones into the bloodstream in order to regulate processes in various organs

8

Endocrine glands

organs that produce hormones. Endocrine glands release their hormones into the bloodstream for transport to target organs.

9

Hormones

chemical substances produced by glands and circulated in the blood. Hormones have specific effects in the body.

10

Digestive

complex series of organs and glands that processes food in order to supply your body with the nutrients it needs to function effectively

11

Respiratory

concerning the airways or breathing

12

Circulatory

the body system that circulates oxygen in blood to all the cells of the body. The circulatory system consists of the heart, blood vessels and blood.

13

Excretory system

the body system that removes waste substances from the body

14

Respiratory system

the body system involving the lungs and associated structures, which take in air and supply the blood with oxygen to deliver to the body's cells so they can carry out their essential functions; it also performs gas exchange to remove the waste gas carbon dioxide

15

Trachea

narrow tube from the mouth to the lungs through which air moves

16

Lungs

the organ for breathing air. Gas exchange occurs in the lungs.

17

Bronchi

the narrow tubes through which air passes from the trachea to the smaller bronchioles and alveoli in the respiratory system. Singular = bronchus.