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29 Cards in this Set

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