Chapter 8 - Nervous System Questions Flashcards
Where does the Cervical plexus provide innervation?
Neck and posterior portion of the head
What are the 4 plexuses of the body and the spinal nerves they consist of?
Cervical plexus C1 - C4
Brachial plexus C5 - T1
Lumbar plexus L1 - L4
Sacral plexus L4 - S4
Brachial plexus is divided into 5 subdivisions?
Rami Trunks Divisions Cords Branches
What parts of the body does the brachial exist innervate?
Shoulder and upper extremities
What are the 5 major nerves emanating from the brachial plexus?
Axillary nerve Radial nerve Musculocutaneous nerve Ulnar nerve Median nerve
What is the result of a damaged radial nerve
Unopposed action if the muscles that flex the wrist and forearm, and the characteristic of “wrist drop” develops
Injury to ulnar nerve results in?
Unopposed extension of the thumb and first two fingers. This is called “clawhand” deformity
4 major nerves that exit the lumbosacral plexus?
Obturator nerve
Femoral nerve
Tibial nerve
Common peroneal nerve
