4.1.2 Quiz Muscle Anatomy and Function

Label the parts of the skeletal muscle.

a

b

c

muscle

myofibril

fascicle

Sort the layers of the membranes of muscle from the outermost to the innermost.

• endomysium

• epimysium

• perimysium

Our bicep muscle is attached to the scapula at one end and the radius at the other. When you contract the bicep muscle, the scapula remains stationary, while the radius, a bone of your forearm, moves. Which of the following statements about the origin and insertion of the bicep muscle is true?

• 
  The insertion of the muscle is the end attached to the scapula.

• 
  The origin of the muscle is the end attached to the scapula.

• 
  The insertion of the muscle is the end attached to the radius.

• 
  The origin of the muscle is the end attached to the radius.

Match the following

• muscle that contracts

• Synergist

• muscle that stabilizes the origin

• Agonist

• muscle that relaxes

• Fixator

• supports the movement of the agonist

• Antagonist

Match the following

• extension

• 
• circumduction

• 
• rotation

• 
• flexion

• 

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

Choose one

A: Explain how skeletal muscles contribute to body movement and posture.

B. Describe how skeletal muscles work in pairs to facilitate movement.