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29 Cards in this Set
- Front
- Back
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brain and spinal cord
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central nervous system
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part of the nervous system where cranial nerves arise from the brain and peripheral nerves rise from the spinal cord. It divides into the somatic and autonomic nervous systems
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peripheral nervous system
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nervous system part that controls voluntary bodily functions
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somatic nervous system
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nervous system part that controls involuntary bodily functions
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autonomic nervous system
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section of the nervous system that prepares the body for stressful situations
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sympathetic nervous system
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controls the portion of the body responsible for vegetative functions
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parasympathetic nervous system
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nerve cell or fundamental component of the nervous system
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neuron
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a substance that is released from the axon terminal of a presynaptic neuron on excitation and that travels across the synaptic cleft to either excite or inhibit the target cell. ie: dopamine,norepinephrine,acetylcholine
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neurotransmitter
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pathway from the brain to the organs if need be
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spinal cord
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divides spinal cord into right and left halves
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anterior medial fissure
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shallow longitudinal groove along the dorsal surface of the spinal cord
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posterior medial sulcus
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central portion of the spinal cord
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grey matter
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material that surrounds grey matter in the spinal cord and is made up of axons
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white matter
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bundles of axons along the spinal cord that send signals from the brain to the body
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descending tracts
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bundles of axons along the spinal cord that send signals from the body to the brain
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ascending tracts
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31 pairs of nerves that originate along the spinal cord from anterior and posterior nerve roots
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spinal nerves
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topographical region of the body surface innervated by one nerve root
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dermatome
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muscle and tissue of the body innervated by a spinal nerve root
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myotome
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voluntary system aka
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somatic
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involuntary system aka
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autonomic
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Inside involuntary system are 2 parts:
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sympathetic and parasympathetic
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12 pairs of nerves that extend from the lower surface of the brain
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cranial nerves
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group of autonomic nerve cells located outside the central nervous system
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autonomic ganglia
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nerve fibres going from the cns to the autonomic ganglia
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preganglionic nerves
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nerve fibres that go from the autonomic ganglia to the target tissue
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postganglionic nerves
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2 types of sympatheic receptors
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adrenergic and dopaminergic
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cranial nerves carrying parasympatheic fibres
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3 7 9 10
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breakdown of glycogen to glucose
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glycogenolysis
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conversion of protein and fat to form glucose
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gluconeogenesis
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