Starting at the spinal cord, the subdivisions of the brachial plexus are (in order)___________ .
A) divisions, roots, trunks, and cords
B) roots, divisions, cords, and trunks
C) roots, trunks, divisions, and cords
D) trunks, divisions, cords, and roots

Question

Quizplus · Accepted Answer

The subdivisions of the brachial plexus begin with the roots, which emerge from the spinal cord. These roots then join together to form trunks, which divide into divisions. Finally, the divisions come together to form the cords. Therefore, the correct order is roots, trunks, divisions, and cords, making choice C the correct answer.

Starting at the Spinal Cord, the Subdivisions of the Brachial