The most powerful muscle in the body.

Flexes and adducts the upper arm, such as when climbing or hugging.

The prime mover when flexing the forearm.

One of the bulging muscles of the calf.

Flexes the lumbar region of the spinal cord to cause bending over at the waist.

The longest muscle in the body; aids in flexion of the hip and knee.

Adducts the humerus and extends the upper arm backward, such as when climbing or swimming.

Flexes the thigh.

Raises the eyebrows when glancing upward.

Flexes the head.

The prime mover when extending the forearm.

Elevate the ribs during inspiration.

Raises and lowers the shoulders.

Abducts, flexes, and rotates the arm.

How does muscle attach to muscle?

Which of the following correctly describes skeletal muscle?

Besides ATP, muscle contraction requires:

What is an aponeurosis?

What are the units of contraction in a muscle called?

The plasma membrane that surrounds a muscle _______ is called a sarcolemma.

The connective tissue surrounding the muscle outside the epimysium is called _________.

A skeletal muscle ________ is also called a muscle fiber (OR myocyte).

A lack of ________ causes a muscle to shrink, or atrophy.

Between the end of a motor nerve and a muscle fiber is a narrow space called a _______ ______.

The end of a muscle that attaches to the more stationary bone is called the __________.

The end of a muscle with a more mobile attachment is called the _________.

The continuous state of ____________ _______________ that allows you to stand and hold your head up is called muscle tone.

Anaerobic respiration produces a by-product called __________ __________ that leads to muscle fatigue.

The minimum ______ needed to cause a muscle fiber to contract is called the threshold.