While sitting at your desk,you drop your pencil onto the floor.You bend over to pick up the pencil.In order to straighten up and continue your exam you must use which of the following muscles?
A)Tibialis anterior
B)Erector spinae
C)Semimembranosus
D)Tibialis anterior and semimembranosus
E)Extensor hallucis longus

Question

Quizplus · Accepted Answer

The erector spinae muscles are responsible for straightening the back and maintaining proper posture. When bending over to pick up an object, these muscles are lengthened and then contract to bring the body back to an upright position. The other muscles listed are not directly involved in this movement.

While Sitting at Your Desk,you Drop Your Pencil onto the Floor.You