Exercise 15 Gross Anatomy of the Muscular System

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NAME ____________________________________ LAB TIME/DATE _______________________

Phyllis Huffines

R E V I E W

S H E E T
EXERCISE

3/11/2012

15

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Gross Anatomy of the Muscular System
Classification of Skeletal Muscles
1. Several criteria were given for the naming of muscles. Match the criteria (column B) to the muscle names (column A). Note that more than one criterion may apply in some cases. Column A E,G A,G

Column B a. b. c. d. e. f. g. action of the muscle shape of the muscle location of the origin and/or insertion of the muscle number of origins location of the muscle relative to a bone or body region direction in which the muscle fibers run relative to some imaginary line relative size of the muscle

1. gluteus maximus 2. adductor magnus 3. biceps femoris 4. transversus abdominis 5. extensor carpi ulnaris 6. trapezius 7. rectus femoris 8. external oblique

D,E E,F A,C,E B E,F E,F

2. Match the key terms to the muscles and movements described below. Key: a. prime mover (agonist) 1. 2. 3. 4. 5. 6. b. antagonist c. synergist d. fixator

A D B
C C D

term for the biceps brachii during elbow flexion term that describes the relation of brachialis to biceps brachii during elbow flexion term for the triceps brachii during elbow flexion term for the iliopsoas during hip extension term for the gluteus maximus during hip extension when walking up stairs terms for the rotator cuff muscles and deltoid when the elbow is flexed and the hand grabs a tabletop to lift the table

95

Muscles of the Head and Neck
3. Using choices from the key at the right, correctly identify muscles provided with leader lines on the diagram. Key: a. buccinator b. corrugator supercilii Galea aponeurotica

c. depressor anguli oris d. depressor labii inferioris

E

B
J

F

e. epicranius (frontal belly) f. epicranius (occipital belly) g. levator labii superioris

G
N

A K

H

h. masseter i. mentalis

I
D

M
j. orbicularis oculi

C L

k. orbicularis oris l. platysma m. trapezius n. zygomaticus major and minor

4. Using the key provided in question 3, identify the muscles described next. N A J

1. 2. 3. 4. 5.

used in smiling used to suck in your cheeks used in blinking and squinting used to pout (pulls the corners of the mouth downward) raises your eyebrows for a questioning expression

B
K

6. 7. 8. 9.

used to form the vertical frown crease on the forehead your “kisser” prime mover to raise the mandible tenses skin of the neck during shaving

H

C

L

E

96

Review Sheet 15

Muscles of the Trunk
5. Correctly identify both intact and transected (cut) muscles depicted in the diagram, using the key given at the right. (Not all terms will be used in this identification.) Key: Coracoid process Bursa Clavicle Sternum

a. biceps brachii b. brachialis c. deltoid (cut)

M
C

d. external intercostals e. external oblique

I

f. internal oblique g. latissimus dorsi

L

h. pectoralis major (cut) i. pectoralis minor

A D

j. rectus abdominis k. rhomboids l. serratus anterior

B

m. subscapularis n. transversus abdominis o. trapezius

6. Using the key provided in question 5 above, identify the major muscles described next. J
G

1. 2. 3. 4.

a major spine flexor prime mover for arm extension

H,G

6. important in shoulder adduction; antagonists of the shoulder abductor (two muscles) 7. moves the scapula forward and rotates scapula upward 8. small, inspiratory muscles between the ribs; elevate the ribs 9. extends the head 10. pull the scapulae medially

H E,F,N

L

prime mover for arm flexion assume major responsibility for forming the abdominal girdle (three pairs of muscles) prime mover of shoulder abduction K

D

C

O

5.

Review Sheet 15

97

Muscles of the Upper Limb
7. Using terms from the key on the right, correctly identify all muscles provided with leader lines in the diagram. (Note that not all the...
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