nervous supply, chpt 8 Flashcards
posterior/ dorsal root function
take sensory info to brain
anterior/ ventral root function
carry motor info from Brain to effector
mixed nerve aka spinal nerve trunk made of
- posterior/ anterior root
ramus meaning
thick end branches of mixed nerve
2 ramus -
anterior and posterior ramus
anterior/ ventral ramus function
innervate:
- upper and lower limb muscles
- skin of lateral and anterior trunk
- axons of rami form networks join R and L body = network of axons
network of axons name
plexus
posterior/ dorsal ramus
- supply nerves to deep muscles
- skin of posterior surface of trunk
types of principle plexus
- cervical
- brachial
- lumbar
- sacral
- smaller coccygeal
branchial plexus nerves
- muscutaneous
- axillary
- median
- radial
- ulnar
branchial plexus break down of nerves
roots to trunks to anterior and posterior division to cords to to branches (individual nerves)
-muscutaneous nerve innervates
anterior muscles of the arm (corcobrachalis, biceps, brachilais)
which nerve innervates the deltoid, teres minor, superior-posterior arm
axillary nerve
-muscutaneous nerve function
feeling
radial nerve innervates
- posterior arm and forearm
- skin of posterior arm and forearm
- dorsum of hand and fingers