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.

Multiple ChoiceMore than one choice may apply.Which are ways in which muscle names have been derived?a. Attachmentsb. Sizec. Functiond. Location

The chewing muscles that protract the mandible and produce side-to-side grinding movements are thea. buccinators,b. masseters,c. temporalis,d. pterygoids.

Muscles that depress the hyoid bone and larynx include all but thea. sternohyoid,b. omohyoid,c. geniohyoid,d. sternothyroid.

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

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.

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 thea. rectus femoris,b. iliopsoas,c. vastus muscles,d. gluteus maximus.