Muscle Structure

The entire muscle is encased by connective tissue called the

• sacromere

• sarcoplasm

• myosin

• epimysium

The _______________ covers bundles of cells (fascicles) within the muscle.

• endomysium

• perimysium

• sarcoplasm

• tendon

the cytoplasm of a muscle cell is called the

• myosin

• actin

• fascia

• sarcoplasm

Structure B is known as the thin filaments of the sarcomere, what is another name for the thin filaments?

• myosin

• actin

• fascia

• myofibril

Structure C is known as the thick filament of the sarcomere, it is also known as

• myosin

• actin

• fascia

• myofibrils

Structure A is on either side of the sarcomere, it is called the

• A band

• I band

• Z disc

• fascia

The unit between A and A is called

• a sarcomere

• The I band

• the Z disc

• fascia

An individual skeletal muscle cell

• muscle fiber

• fascicle

• sarcolemma

• aponeurosis

• agonist

Tags

NGSS.MS-LS1-2

A bundle of muscle fibers

• muscle fiber

• fascicle

• sarcolemma

• aponeurosis

• agonist

The ability to contract or shorten

• agonist

• antagonist

• contractility

• extensibility

• irritability