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

Which function is being fulfilled by a muscle that holds a bone steady during movement?

a. Antagonist

b. Synergist

c. Supinator

d. Fixator

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:      

_____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 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?