Skeletal Muscle Anatomy

Which is a myofilament?

• Actin

• Acetylcholine

• Sarcolemma

• Collagen

Which myofilament is thick?

• Actin

• Myosin

A muscle is wrapped in a _____________.

• Endomysium

• Perimysium

• Sarcomysium

• Epimysium

A fascicle is wrapped in a _____________.

• Endomysium

• Perimysium

• Sarcomysium

• Ectomysium

A muscle fiber is wrapped in a ___________.

• Perimysium

• Ectomysium

• Epimysium

A group of fascicles is a _____________.

• Muscle fiber

• Myofibril

• Muscle

• Sarcomere

A group of myofibrils is a _____________.

• Fascicle

• Muscle fiber

• Muscle

• Sarcomere

When a muscle contracts, the smallest part that contracts is ___________________.

• Muscle fiber

• Myofilament

• Myofibril

• Sarcomere

The plasma membrane of a skeletal muscle cell is called the:

• sarcomere

• myofilament

• sarcolemma

• sarcoplasm

Which label is the muscle fiber?

• A

• B

• C

• D

Tags

NGSS.MS-LS1-3