Question

Which of the following is a prime mover in head flexion? a. occipitofrontalis b. corrugator supercilii c. sternocleidomastoid d. masseter

Name: Problem 12, Chapter 11: Anatomy & Physiology
Uploaded: 2020-06-27T16:08:01-08:00
Duration: 34 s
Channel: Chinwe Abaraoha
Description: Which of the following is a prime mover in head flexion? a. occipitofrontalis b. corrugator supercilii c. sternocleidomastoid d. masseter

   Which of the following is a prime mover in head flexion?
a. occipitofrontalis
b. corrugator supercilii
c. sternocleidomastoid
d. masseter

Anatomy & Physiology

J. Gordon Betts,… 1st Edition

Chapter 11, Problem 12

Instant Answer

Solved by Expert Chinwe Abaraoha

06/27/2020

Step 1

Head flexion is a movement that can be described as bringing the chin to the chest, which involves movement of the neck. Show more…

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Which of the following is a prime mover in head flexion? a. occipitofrontalis b. corrugator supercilii c. sternocleidomastoid d. masseter

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Key Concepts

Prime Mover

A prime mover, or agonist, is the muscle that is primarily responsible for creating a specific movement in a joint. It provides the necessary force and motion for the execution of a particular action.

Head Flexion

Head flexion is the movement where the head moves forward, typically involving the anterior neck muscles bending the response, such as when bringing the chin toward the chest. It is an essential movement in the context of posture and various head movements.

Sternocleidomastoid

The sternocleidomastoid is a major muscle located in the neck that plays a crucial role in head movements, including head flexion, rotation, and lateral flexion. When both muscles on either side of the neck contract, they effectively produce head flexion as a primary movement.

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