comprises of spinal cord and the brain. It receives information from the senses and controls the body's responses.
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Spinal cord
Bundle of nerve fibres enclosed within the spinal column and which connects nearly all parts of the body
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Brain
responsible for coordinating sensation, intellectual and nervous activity.
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Peripheral nervous system
Part if the nervous system outside the brain
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Autonomic nervous system
governs the brain's involuntary activities and is self regulating. Split into the sympathetic branch- fight or flight and parasympathetic branch- rest and digest
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Somatic nervous system
Part of the peripheral nervous system responsible for carrying sensory and motor information to and from the central nervous system
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Neurotransmitter
chemical substances that play an important part in the workings of the nervous system by transmitting nerve impulses across a synapse.
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Sensory neurons
carry impulses from sensory receptors to the spinal cord and the brain
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Relay neurons
allow sensory and motor neurons to communicate with one another
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Motor neurons
Form synapses with muscles and control their contractions
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Synapse
Conjunction of the end axon of one neuron to the dendrite or cell body of another
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Synaptic transmission
Process by which a nerve impulse passes across the synaptic cleft from one neuron to another
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Endocrine glands
special group of cells within the endocrine system
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Endocrine system
a network of glands throughout the body that manufacture and secrete chemical messengers (hormones)
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Hormones
chemical messengers of the body which travel through the bloodstream
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Pituitary gland
The master gland whose primary function is to influence the release of hormones from other glands
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Fight or flight response
A sequence of activity within the body that is triggered when the body prepares itself for defending or attacking or running away from safety.
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HPA axis
describes the sequence of bodily activity in response to stress that involves the hypothalamus, pituitary and adrenal cortex
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Other cards in this set
Card 2
Front
Spinal cord
Back
Bundle of nerve fibres enclosed within the spinal column and which connects nearly all parts of the body
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