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.

The strongest masticatory muscle is the (a) pterygoid, (b) masseter, (c) temporalis, (d) mandible.

Intrinsic muscles of the back that promote extension of the spine (or head) include all buta. splenius muscles,b. semispinalis muscles,c. scalene muscles,d. erector spinae.

The muscle that rotates the eye medially is the (a) superior oblique, (b) inferior rectus, (c) medial rectus, (d) lateral rectus.

Several muscles act to move and/or stabilize the scapula. Which of the following are small rectangular muscles that square the shoulders as they act together to retract the scapula?a. levator scapulae,b. rhomboids,c. serratus anterior,d. trapezius.

A prime mover of thigh flexion is thea. 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 thea. 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.