Important flexors of the vertebral column that act in opposition to the erector spinae are the

(a) Rectus abdominis

(b) Longus capitis

(c) Longus colli

(d) Scalene

A prime mover of thigh flexion is the:

a. Rectus femoris

b. Iliopsoas

c. Vastus muscles

d. Gluteus maximus

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

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