Muscle Structure Review for Quiz

The membrane that is the closest to the individual muscle fiber is the _____ .

• aponeurosis

• epimysium

• perimysium

• endomysium

A group of skeletal muscle fibers is called a/an _____.

• perimysium

• fascicle

• epimysium

• tendon

Which of the following does not belong with the others?

• myofilament

• myosin

• myofibril

• actin

The smallest, functional unit of contraction is the _____.

• fiber

• sarcomere

• filament

• myofibril

The I bands in a sarcomere are made of _____ .

• myosin

• actin and myosin

• actin

• tropomyosin

The _____ zone contains only myosin and is in the center of a sarcomere.

• A

• I

• M

• H

The cisternae are enlarged portions of the _____ .

• sarcoplasmic reticulum

• endoplasmic reticulum

• transverse tubules

• T tubules

An entire skeletal muscle is surrounded by ___________.

• sarcolemma

• epimysium

• endomysium.

• perimysium

Muscle fibers are composed of bundles of

• myofilaments

• fascicles

• sarcomeres

• myofibrils

What is the name of the attachment site of myosin filaments?

• H zone

• M line

• Z line

• A band