PRE-LAB Activity 2: Mastering the Muscles of the Head and Neck
1. Match each of the following muscles with its correct description.
a. sternohyoid
b. hyoglossus
c. sternocleidomastoid
d. orbicularis oris
e. frontalis
f. mentalis
g. stylohyoid
h. zygomaticus major
i. digastric
j. masseter
1. originates on the sternum and clavicle
2. classified as an infrahyoid muscle
3. consists of two bellies
4. elevates and protrudes lower lip
5. is a major chewing muscle
6. classified as a suprahyoid muscle
7. depresses the tongue
8. closes the lips
9. raises the eyebrows
10. one of the smiling muscles
PRE-LAB Activity 3: Mastering the Muscles of the Trunk
1. Match each of the following muscles with its correct description.
a. internal intercostals
b. rectus abdominis
c. quadratus lumborum
d. levator scapulae
e. trapezius
f. subclavius
g. erector spinae
h. external intercostals
i. diaphragm
1. dome-shaped muscle that functions in inspiration
2. 11 pairs of muscles that elevate the rib cage
3. tripartite muscle that runs from the sacrum to the skull
4. flexes the vertebral column
5. large, triangular muscle with superior, middle, and inferior fibers
6. 11 pairs of muscles that depress the rib cage
7. square-shaped muscle in the lumbar region
8. elevates the scapula
9. located below the clavicle
PRE-LAB Activity 4: Mastering the Muscles of the Upper Limb
1. Which of the following muscles is one of the rotator cuff muscles?
a. trapezius
b. pectoralis major
c. supraspinatus
d. latissimus dorsi
e. triceps brachii
2. Distinguish between the triceps brachii and the biceps brachii in terms of location and function.
3. Indicate whether each of the following muscles is located on the anterior (A) or the posterior (P) surface of the body, and then write the action of the muscle.
a. biceps brachii:
b. extensor carpi ulnaris:
c. extensor digitorum:
d. flexor carpi radialis:
e. triceps brachii: