Peripheral system ACTUAL EXAM 2026 LATEST UPDATE VERIFIED QUESTIONS AND ANSWERS|| LATEST EXAM ALREADY GRDAED A+

Peripheral system ACTUAL EXAM 2026 LATEST
UPDATE VERIFIED QUESTIONS AND ANSWERS||
LATEST EXAM ALREADY GRDAED A+




What spinal nerves contribute to the cervical plexus?


ANSWERS: C1-C4


Where does the cervical plexus lie?


ANSWERS: Deep in the sternocleidomastoid (SCM)


What areas does the cervical plexus provide cutaneous sensory
information for?


ANSWERS: From the posterior scalp to the clavicle


What muscles does the cervical plexus innervate?


ANSWERS: The anterior neck muscles

,What is the most important branch of the cervical plexus?


ANSWERS: Phrenic nerve


What is the function of the phrenic nerve?


ANSWERS: -It provides the only motor supply
-main sensory nerve for the diaphragm


What is the origin of the brachial plexus?


ANSWERS: Formed by the anterior rami of C5-T1


Where does the brachial plexus emerge?


ANSWERS: Between the anterior and middle scalene


What structure does the brachial plexus pass deep to?


ANSWERS: The clavicle



Where does the brachial plexus enter after passing deep to the clavicle?


ANSWERS: The axilla

, What are the major nerves that arise from the brachial plexus?

ANSWERS:
-Radial nerve
-axillary nerve
-ulnar nerve
-median nerve
-MC nerve


What part of the body is innervated by the brachial plexus?


ANSWERS: The entire upper extremity (UE)


What is the lumbar plexus formed by?


ANSWERS: The anterior rami of L1-L4


Where does the lumbar plexus form?


ANSWERS: In the psoas major muscle


What areas do the branches of the lumbar plexus innervate?


ANSWERS: The skin and muscles of the anterior and medial thigh


What is the sacral plexus formed by?


ANSWERS: The anterior rami of S1-S4


Where is the sacral plexus located?


ANSWERS: Anterior to the piriformis muscle