Chapter 12: Spinal Nerves Flashcards
endoneruium, perineurium, epineurium
dorsal ramus
ventral ramus
dermatomal map
the map that shows the dermatomes
dermatome
the specific area of skin that is innverated by a pair of spinal nerves
plexus
where nerves weave together to become other nerves
ansa cervicalis
loop between C1 and C3
phrenic nerve
from C3 to C5
brachial plexus
From C5 to T1. Branching together to form trunks, then divisions, then cords, and finally multiple nerves that are out in the perphery
axillary nerve origination
originates at the posterior cord of the brachial plexus, C5 to C6
functions of axillary nerve
rotates arm and abducts the arm
median nerve origination
from medial and lateral cords of the brachial plexus, C5 to T1
functions of median nerve (4)
pronation of forearm and hand
flexes and abducts wrist
flexes wrist
flexes fingers
lumbar plexus
sacral plexus