Plexus Flashcards
What are the four major nerve plexuses in the human body?
Cervical plexus, brachial plexus, lumbar plexus, sacral plexus.
What is the vertebral range for the cervical plexus?
C1 to C4.
What is the primary function of the cervical plexus?
It supplies nerves to the neck and parts of the head, including the diaphragm.
What is the vertebral range for the brachial plexus?
C5-C8 + T1.
What is the main function of the brachial plexus?
It innervates the upper limb and parts of the shoulder.
What is the vertebral range for the lumbar plexus?
L1 to L4.
What is the primary function of the lumbar plexus?
It supplies nerves to the lower abdomen, pelvis, and anterior thigh.
What is the vertebral range for the sacral plexus?
L4 to S4.
What is the main function of the sacral plexus?
It innervates the posterior thigh, lower leg, and foot.
True or False: The cervical plexus is responsible for innervating the diaphragm.
True.
Fill in the blank: The _____ plexus is responsible for the sensation and motor function of the arms.
brachial
What nerve is primarily associated with the sacral plexus?
Sciatic nerve
Multiple Choice: Which of the following plexuses is NOT involved in the innervation of the lower body? A) Cervical B) Lumbar C) Sacral D) Brachial
A) Cervical.
What is the function of the phrenic nerve, part of which plexus?
It controls the diaphragm for breathing.
cervical
Three subdivisions of bracchial plexus and function of each.
ulnar: grip
median: wrist extension
radial: wrist extend/hyperextend
Primary nerve of the lumbar plexus, and function?
femoral: quadriceps, hip flexion
