Skeletal Muscle Worksheet with Key Practice Exam1, Exercises of Anatomy

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Skeletal Muscle

Practice Exam

Name the following muscles indicated

by the arrows and describe their actions.

Click to the next slide to see the answer.

*note: not every muscle you are required to know will be on this practice exercise so make sure you review the checklist of structures (p. 110 in your lab manual) when preparing for your lab exam

*For best results on these practice exams, write your answers

on paper before clicking to see the correct answer. Try to

answer within a minute (remember your lab exams will be

timed) and make sure to check your spelling!

Orbicularis oculi

Action: Closes eye/squeezes eye shut

*click to the next slide to check your answer

*click to the next slide to check your answer

Internal intercostals

Action: Pulls ribs inferiorly to cause expiration (exhalation)

Rectus abdominis

Action: Flexion of torso at vertebral column

*click to the next slide to check your answer

*click to the next slide to check your answer

Erector spinae

Action: Extension of vertebral column with bilateral contraction; Rotation and lateral flexion of spine with unilateral contraction

Rhomboid major

Action: Retraction of the scapula

*click to the next slide to check your answer

*click to the next slide to check your answer

Sternocleidomastoid

Action: Flexion of the head and neck with bilateral (both left and right) contraction; Lateral flexion and rotation of the head and neck with unilateral contraction