Muscle Quiz #1

The connective tissue sheath that envelops bundles of muscle fibers is the:

• perimysium.
• endomysium.
• periosteum
• epimysium. 

The covering of individual muscle fibers is the:

•  epimysium. 
•  periosteum.
• endomysium.
• perimysium.

Groups of skeletal muscle fibers are bound together by a connective tissue envelope called the:

• endomysium.
• epimysium.
• perimysium.
• aponeurosis.

Bundles of fine fibers that extend lengthwise along muscle fibers are called:

• myofibrils. 
• myofilaments
• striae
• sarcoplasmic reticulum.

_____ muscle is also known as striated muscle.

•  Visceral
• Involuntary
• Skeletal 
• Smooth

Which of the following types of muscle tissue contains cells that have a single nucleus?

• Cardiac 
• Smooth
• Skeletal 
• Both A and B

From smallest to largest, which of the following is the correct order of arrangement?

• Fiber, myofibril, myofilament 
• Myofibril, myofilament, fiber 
•  Myofilament, myofibril, fiber
• Fiber, myofilament, myofibril

True or false

Smooth muscle is found in hollow organs

• True

• False

Two proteins that are involved in the contraction of muscles are

• ATP and myosin

• Calcium and potassium

• sarcomere and myofibril

• actin and myosin

Which is NOT a muscle type?

• striated

• cardiac

• smooth

• skeletal