10. Muscles

The major extensor of the elbow is the

(a) Triceps brachii

(b) Biceps brachii

(c) Deltoid

(d) Subscapularis

The prime mover of thigh extension against resistance is the:

a. Gluteus maximus

b. Gluteus medius

c. Biceps femoris

d. Semimembranosus

The muscles that rotate the radius without producing either flexion or extension of the elbow are the

(a) Brachialis and brachioradialis

(b) Pronator teres and supinator

(c) Biceps brachii and triceps brachii

(d) a, b, and c.

Which criterion (or criteria) is/are used in naming the gluteus medius?

a. Relative size

b. Muscle location

c. Muscle shape

d. Action

e. Number of origins

The powerful flexor of the hip is the

(a) Piriformis

(b) Obturator

(c) Pectineus

(d) Iliopsoas

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

Knee extensors known as the quadriceps femoris consist of the

(a) Three vastus muscles and the rectus femoris

(b) Biceps femoris, gracilis, and sartorius

(c) Popliteus, iliopsoas, and gracilis

(d) Gastrocnemius, tibialis, and peroneus

Which muscles act to propel food down the length of the pharynx to the esophagus?

List the four patterns of fascicle arrangement used to classify the different types of skeletal muscles.

Name and describe the action of muscles used to shake your head no; to nod yes.

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 four muscle groups make up the axial musculature?

Name four criteria used in naming muscles, and provide an example (other than those used in the text) that illustrates each criterion.

Differentiate between the arrangement of elements (load, fulcrum, and effort) in first-, second-, and third-class levers.

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?