Muscular System

A bundle of muscle fibers is a

• muscle

• fascicle

• myofibril

• sarcomere

The contractile unit of a muscle made of actin and myosin.

• tendon

• fascicle

• muscle

• sarcomere

What type of muscle makes up your heart?

• cardiac

• skeletal

• smooth

• cardiac and skeletal

What is the connective tissue covering of a muscle fascicle?

• endomysium
• perimysium
• epimysium

Closes and protrudes lips

• orbicularis oculi
• orbicularis oris
• frontalis
• masseter

Blinks and closes eye

• orbicularis oris
• orbicularis oculi
• frontalis
• masseter

What muscle is used in chewing?

• frontal
• masseter
• orbiculus oris
• occipitalus

A muscle that causes an action

• Agonist

• Synergist

• Prime mover

• Antagonist

the cordlike connective tissue that attaches a muscle to a bone is called

• a tendon

• a ligament

• a sarcomere

• a fascicle

The entire muscle is encased by connective tissue called the

• sacromere

• sarcoplasm

• myosin

• epimysium