338
UNIT TWO
PART B
9.8 Major Skeletal Muscles
30
Match the muscle with its description or action.
(pp. 306–330)
9.4 Muscular Responses
15
Distinguish between a twitch and a sustained
contraction. (p. 296)
16
Def
ne
threshold stimulus.
(p. 296)
17
Which oF the Following describes addition oF muscle
f
bers to take part in a contraction? (p. 297)
a. summation
b. recruitment
c. tetany
d. twitch
e. relaxation
18
Explain how a skeletal muscle can be stimulated to
produce a sustained contraction. (p. 297)
19
Distinguish between a tetanic contraction and muscle
tone. (p. 297)
20
Distinguish between concentric and eccentric
contractions, and explain how each is used in body
movements. (p. 298)
21
Distinguish between Fast- and slow-twitch muscle f
bers.
(p. 299)
9.5 Smooth Muscle
22
Distinguish between multiunit smooth muscle and
visceral smooth muscle. (p. 300)
23
Def
ne
peristalsis
and explain its Function. (p. 300)
24
Compare the characteristics oF skeletal and smooth
muscle f
ber contractions. (p. 301)
9.6 Cardiac Muscle
25
Compare the characteristics oF skeletal and cardiac
muscle f
ber contractions. (p. 301)
9.7 Skeletal Muscle Actions
26
Describe a lever, and explain how its parts may be
arranged to Form f
rst-class, second-class, and third-class
levers. (p. 302)
27
Explain how limb movements Function as levers. (p. 302)
28
Distinguish between a muscle’s origin and its insertion.
(p. 303)
29
Def
ne
prime mover, agonist, synergist,
and
antagonist
.
(p. 304)
(1) Buccinator
(2) Epicranius
(3) Lateral pterygoid
(4) Platysma
(5) Rhomboideus major
(6) Splenius capitis
(7) Temporalis
(8) Zygomaticus major
(9) Biceps brachii
±(10)± Brachialis
±(11)± Deltoid
±(12)± Latissimus±dorsi
±(13)± Pectoralis±major
±(14)± Pronator±teres
±(15)± Teres±minor
±(16)± Triceps±brachii
±(17)± Biceps±Femoris
±(18)± External±oblique
±(19)± Gastrocnemius
±(20)± Gluteus±maximus
±(21)± Gluteus±medius
±(22)± Gracilis
±(23)± Rectus±Femoris
±(24)± Tibialis±anterior
A. Inserted on the coronoid process oF
the mandible
B. Draws the corner oF the mouth up-
ward
C. Can raise and adduct the scapula
D. Can pull the head into an upright
position
E. Consists oF two parts—the Frontalis
and the occipitalis
². Compresses the cheeks
G. Extends over the neck From the chest
to the Face
H. Pulls the jaw From side to side
I. Primary extensor oF the elbow
J. Pulls the shoulder back and
downward
K. Abducts the arm
L. Rotates the arm laterally
M. Pulls the arm Forward and across the
chest
N. Rotates the arm medially
O. Strongest ³
exor oF the elbow
P. Strongest supinator oF the Forearm
Q. Inverts the Foot
R. A member oF the quadriceps Femoris
group
S. A plantar ³
exor oF the Foot
T. Compresses the contents oF the ab-
dominal cavity
U. Largest muscle in the body
V. A hamstring muscle
W. Adducts the thigh
X. Abducts the thigh
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