10. Muscles

Which four muscle groups make up the axial musculature?

Name two muscles in each of the following compartments or regions:

a. thenar eminence (ball of thumb)

b. posterior compartment of forearm

c. anterior compartment of forearm—deep muscle group

d. anterior muscle group in the arm

e. muscles of mastication

What three functional groups make up the muscles of the lower limbs?

a. Name two forearm muscles that are powerful extensors and abductors of the hand.

b. Name the sole forearm muscle that can flex the distal interphalangeal joints.

Which of the following is a large, deep muscle that protracts the scapula during punching?

a. Serratus anterior

b. Rhomboids

c. Levator scapulae

d. Subscapularis

a. Name the four muscle pairs that act in unison to compress the abdominal contents.

b. How does their arrangement (fiber direction) contribute to the strength of the abdominal wall?

c. Which of these muscles can effect lateral rotation of the spine?

d. Which can act alone to flex the spine?

Intrinsic muscles of the back that promote extension of the spine (or head) include all but:

a. Splenius muscles

b. Semispinalis muscles

c. Scalene muscles

d. Erector spinae

Which are ways in which muscle names have been derived?

a. Attachments

b. Size

c. Function

d. Location

The prime mover of inspiration is the:

a. Diaphragm

b. Internal intercostals

c. External intercostals

d. Abdominal wall muscles

The prime mover of thigh extension against resistance is the:

a. Gluteus maximus

b. Gluteus medius

c. Biceps femoris

d. Semimembranosus

Which of the following muscle names does NOT provide information about the muscle's actions?

Which of the following is not a muscle of the rotator cuff?

a. Teres major muscle

b. Teres minor muscle

c. Subscapularis muscle

d. Infraspinatus muscle

e. Supraspinatus muscle

As Kendra's coach watched her sail over the high jump bar, he contracted his right orbicularis oculi muscle, raised his arm, and contracted his opponens pollicis. Was he pleased or displeased with her performance? How do you know?

The arm muscle that both flexes and supinates the forearm is the

a. Brachialis

b. Brachioradialis

c. Biceps brachii

d. Triceps brachii