Chapter 14. Integumentary system and muscles, bones & joints

Muscles that oppose one another are

• a. synergists.

• b. levers.

• c. hateful.

• d. antagonists.

• e. fixators.

The most movable attachment of a muscle is its

• a. origin.

• b. insertion.

• c. fascia.

• d. fulcrum.

• e. belly.

The muscle whose name means it is to the side of midline is the

• a. gluteus maximus.

• b. vastus lateralis.

• c. teres major.

• d. latissimus dorsi.

• e. adductor magnus.

In a class III lever system, the

• a. fulcrum is located between the pull and the weight.

• b. weight is located between the fulcrum and the pull.

• c. pull is located between the fulcrum and the weight.

A prominent lateral muscle of the neck that can cause flexion of the neck or rotate the head is the

• a. digastric.

• b. mylohyoid.

• c. sternocleidomastoid.

• d. buccinator.

• e. platysma.

An aerial circus performer who supports her body only with her teeth while spinning around should have strong

• a. temporalis muscles.

• b. masseter muscles.

• c. buccinator muscles.

• d. Both a and b are correct.

• e. All of these are correct.

The tongues shape changes primarily because of the action of the

• a. extrinsic tongue muscles.

• b. intrinsic tongue muscles.

The infrahyoid muscles

• a. elevate the mandible.

• b. move the mandible from side to side.

• c. fix (prevent movement of) the hyoid.

• d. Both a and b are correct.

• e. All of these are correct.

The soft palate muscles

• a. prevent food from entering the nasal cavity.

• b. close the auditory tube.

• c. force food into the esophagus.

• d. prevent food from entering the larynx.

• e. elevate the mandible.

Which of these movements is not caused by contraction of the erector spinae muscles?

• a. flexion of the vertebral column

• b. lateral flexion of the vertebral column

• c. extension of the vertebral column

• d. rotation of the vertebral column