A&P Vocab Quiz 8

This type of muscle is under voluntary control and is responsible for movement of the skeleton.

• Smooth muscle

• Cardiac muscle

• Skeletal muscle

• Myofilament

This muscle type is involuntary and found in the walls of hollow organs.

• Cardiac muscle

• Endomysium

• Skeletal muscle

• Smooth muscle

This specialized muscle type is found only in the heart.

• Cardiac muscle

• Myofibril

• Smooth muscle

• Sarcolemma

This connective tissue sheath surrounds individual muscle fibers.

• Perimysium

• Endomysium

• Epimysium

• Myofilament

This is the outermost layer of connective tissue surrounding a muscle.

• Sarcolemma

• Endomysium

• Epimysium

• Myofibril

This thin connective tissue layer surrounds each muscle fascicle.

• Perimysium

• Myofilament

• Smooth muscle

• Acetylcholine

This membrane surrounds a muscle fiber and plays a role in muscle contraction.

• Sarcolemma

• Myofibril

• Epimysium

• Cardiac muscle

These structures are long, thread-like components of muscle fibers that contain the contractile proteins.

• Myofibril

• Myofilament

• Smooth muscle

• Acetylcholine

These are the filaments within myofibrils that contract and allow muscle movement.

• Acetylcholine

• Myofibril

• Myofilament

• Epimysium

This neurotransmitter is released at the neuromuscular junction to stimulate muscle contraction.

• Acetylcholine

• Sarcolemma

• Cardiac muscle

• Endomysium