Match the muscle with its main action:      


_____Sternocleidomastoid muscle     
_____Transversus abdominis muscle     
_____Internal oblique muscle     
_____Rectus abdominis muscle     
_____Splenius capitis muscle     
_____Quadratus lumborum musclea.


a. Laterally flexes the trunk
b. Flexes the trunk
c. Compresses the abdominal cavity
d. Extends the vertebral column
e. Flexes the head
f. Extends the head

Mark the following statements as true or false. If the statement is false, correct it to make a true statement.

a. The main action of the zygomaticus major and minor muscles is to pull the corners of the mouth up to produce smiling.

Mark the following statements as true or false. If the statement is false, correct it to make a true statement.

c. The rhomboid major and minor muscles retract the scapula.

Mark the following statements as true or false. If the statement is false, correct it to make a true statement.

d. The deltoid muscle is a main abductor of the forearm.

Match the muscle with its main action:      

______Biceps brachii muscle     

______Pronator teres muscle     

______Extensor digitorum muscle     

______Brachialis muscle     

______Triceps brachii muscle     

______Flexor carpi radialis musclea.

a. Extends fingers and hand

b. Supinates forearm

c. Flexes hand

d. Extends forearm

e. Pronates forearm

f. Flexes forearm

Mark the following statements as true or false. If the statement is false, correct it to make a true statement.

a. The pectoralis major and coracobrachialis muscles are antagonists.

Predict the location and function of the flexor digitorum profundus muscle based only on its name.

Why do the three parts of the trapezius muscle have three different actions?

Explain why strengthening the levator ani muscle may help improve bladder and bowel continence (voluntary control over urination and defecation).