Exam 15: Axial Muscles

Match each term with its corresponding description. -Muscles that contract at the same time as the prime mover, producing a more effective movement

Tendons anchor muscles to bone by attaching to the periosteum of the bone.

To stabilize a joint, the antagonist must contract while the prime mover contracts.

Antagonist muscles oppose the movement of the agonist muscle.

Match each muscle with the corresponding description of its action. -Raise(s) the eyebrows (surprise)

A group of skeletal muscle fibers is called a fascicle.

Fixator muscles would most likely be found at the origin points of muscles rather than at the insertion points of muscles.

Circular muscles are sometimes called sphincter muscles.

Imagine that a new, unnamed muscle has been discovered. It inserts into the posterior aspect of the tibia and originates from two points in the center of the femur. Its fibers run parallel to the femur. Give a name to the muscle, and explain its function.

Muscles may be named according to:

Fascia is another term for epimysium.

Define the terms insertion and origin, in relation to muscle movement.

The sternocleidomastoid muscle is an example of a muscle named by the number of heads.

The muscles that move the head are paired muscles on opposite sides of the body.

That which is considered the origin and insertion of a muscle may change under certain circumstances.

The connective tissue sheath that envelops bundles of muscle fibers is the:

The orbicularis oris surrounds the eye and allows you to blink.

The origin of a muscle is on the femur, and the insertion is on the tibia. When it contracts, it bends the knee. Its fibers run parallel to the body. Which of the following terms might be part of its name?

No muscles are both muscles of facial expression and muscles of mastication.

Match each body location with its corresponding muscle. -Gluteus maximus