Explain the Somatosensory System
The somatosensory system consists of:
- 12 pairs of cranial nerves, and
- 31 pairs of spinal nerves
All our conscious awareness of the external environment and all our motor activity to cope with it operate through the somatosensory division of the PNS. Each nerve has nerve bundles, each bundle has a covering of following protective connective tissue:
1) Endoneurium: delicate tissue surrounding individual fibres
2) Perineurium: smooth tissue surrounding bundles of fibres.
3) Epineurium: surrounds and encloses members of bundles of nerve fibres.