8502895
Description
Flashcards by Catherine Stanesby, updated more than 1 year ago
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Created by Catherine Stanesby
about 7 years ago
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| Question | Answer |
| definition: ganglion | group of cell bodies outside of the CNS (notable exceptions include the Basal Ganglia) |
| definition: nucleus | group of neuronal cell bodies |
| definition: tract | group of axons within the CNS with the same origin and destination (e.g. cortico-spinal tract) |
| definition: nerve | group of axons within the PNS with the same origin and destination |
| definition: pathway | route within the nervous system of interconnected axons (typically comprising of more than 1 tract) |
| description: spinal nerves | 31 spinal nerves: - 8 cervical - 12 thoracic - 5 lumbar - 5 sacral - 1 coccygeal All leave through corresponding intervertebral foramen however the spinal cord ends at vertebral level L1/L2. Thereafter, the spinal cord becomes the cauda equina (horse's tail) |
| classification of efferent nerves | general somatic efferent (GSE) general visceral efferent (GVE) special visceral efferent (SVE) |
| definition: general somatic efferent (GSE) nerves | fibres to skeletal muscle of somitic origin |
| definition: general visceral efferent (GVE) nerves | fibres to smooth & cardiac muscle and glands |
| definition: special visceral efferent (SVE) nerves | fibres to braciocephalic skeletal muscle |
| classification of afferent nerves | general sensory afferent (GSA) general visceral afferent (GVA) special visceral afferent (SVA) |
| definition: general sensory afferent (GSA) nerves | receive somatosensory signals |
| definition: general visceral afferent (GVA) nerves | receive signals from visceral organs and blood vessels |
| definition: special visceral afferent (SVA) nerves | receive signals from the gastrointestinal tract including the special senses of smell and taste |
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