Systems Flashcards

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1
Q

Nervous system

A

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.

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2
Q

Central nervous system

A

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

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3
Q

Peripheral nervous system

A

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.

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4
Q

Electrical impulses

A

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

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5
Q

Neurotransmitters

A

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

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6
Q

Synapses

A

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

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7
Q

Endocrine system

A

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

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8
Q

Endocrine glands

A

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

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9
Q

Hormones

A

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

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