10. Muscles

Name the three pennate muscles in the following figure, and for each muscle indicate the type of pennate muscle based on the relationship of muscle fascicles to the tendon. a. ___b. ___c. ___d. ___e. ___f. ___

The arrangement of muscle fibers in which the fibers are arranged at an angle to a central longitudinal tendon isa. circular,b. longitudinal,c. pennate,d. parallel.

Label the three visible muscles of the rotator cuff in the following posterior view of the deep muscles that move the arm. a. ___b. ___c. ___

Match the muscle names in column B to the facial muscles described in column A. Column A______(1) squints the eyes______(2) raises the eyebrows______(3) smiling muscle______(4) puckers the lips______(5) pulls the scalp posteriorly Column Ba. corrugator superciliib. depressor anguli orisc. frontal belly of epicraniusd. occipital belly of epicraniuse. orbicularis oculif. orbicularis orisg. zygomaticus

The prime mover of inspiration is thea. diaphragm,b. internal intercostals,c. external intercostals,d. abdominal wall muscles.

The arm muscle that both flexes and supinates the forearm is thea. brachialis,b. brachioradialis,c. biceps brachii,d. triceps brachii.

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.

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.

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.