Which of the following muscles functions to maintain an erect spinal column and head?
A) erector spinae
B) biceps brachii
C) triceps brachii
D) rectus femoris
E) biceps femoris

Question

Quizplus · Accepted Answer

The erector spinae muscles, particularly the longissimus thoracis, iliocostalis, and spinalis thoracis, function to extend and maintain an erect spinal column and also help to control the movement of the head. The biceps brachii, triceps brachii, rectus femoris, and biceps femoris do not have significant roles in maintaining spinal and head posture.

Which of the Following Muscles Functions to Maintain an Erect