Exam 9: Muscular System

With regard to skeletal muscle contraction,which event comes last?

Which of the following increases the force of contraction of a whole muscle?

Acetylcholine is released from the prejunctional membrane in response to the

On which large muscle do you sit?

This muscle is located in the upper back and posterior neck region;contraction of this muscle causes you to look up at the sky.

This structure is an extension of the sarcolemma or cell membrane;it penetrates the interior of the muscle and carries the electrical signal to the deepest part of the muscle.

Joey has had his leg in a nonweight-bearing cast for 8 weeks.When the cast is removed,the leg appears smaller than the uninjured leg.Which term best describes this observation?

The orbicularis oris muscle

"Make like a scarecrow" by contracting this muscle.

The levator palpebrae superioris

Which muscle are you using as you turn your head to the left and then to the right?

These muscles are located on the inner (medial)surface of the thigh and move the thigh toward the midline of the body.

Which of the following is not a facial muscle?

This group of muscles is located on the posterior thigh.

What is the name of the cord of connective tissue that connects muscle to bone?

The gastrocnemius and the soleus are commonly called the

Which of the following describes a muscle that remains in a contracted state?

Which of the following "muscle words" refers to chest?

The rectus,transversus,internal oblique,and the external oblique refer to

The smiling muscle is the