The Muscular System - Anatomy Coloring Sheet Page 9
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22LWBK244-4102G-C04_48-69.qxd 12/11/08 6:11 PM Page 56 LWBK160-3985G-C95_1329-135#C1BC
Coloring Exercise 4-5
Muscles in Action
Muscles Work Together to Produce a Given Action
COLORING INSTRUCTIONS
• Prime mover
: accomplishes movement
A
Color each structure and its
name at the same time, us-
• Antagonist
: produces opposite movement
B
ing the same color. Color
Must relax to permit prime mover contraction
•
both figures at the same
• Synergist
: assists prime mover by providing additional force or by stabiliz-
C
time.
ing joint
1. Lightly shade the
• Synergists and prime movers are also called agonists
brachialis
, triceps
D
brachii
, and brachiora-
E
dialis
on each
F
An Example: Movements of the Forearm
diagram. Use light colors
• Bend your arm at a right angle; hold a weight in your hand
(light blue, light orange,
and light green).
• During each action, use your other hand to feel muscles contract and relax
2. Use the following color
• Flexion (figure on left)
scheme to color terms
Bring your hand towards your shoulder
•
to
: prime mover
A
C
Prime mover: brachialis
(front of upper arm) contracts
D
•
: navy blue
A
Antagonist: triceps brachii
(back of upper arm) relaxes
E
•
antagonist
: reddish
B
Synergist: brachioradialis
(lower arm) contracts
F
•
orange synergist
: dark green
C
• Extension (figure on right)
Slowly lower your hand
3. Use these colors to
•
draw stripes on the rele-
Prime mover: triceps brachii contracts (the biceps brachii [not shown] is also
•
vant muscle for each dia-
a prime mover)
gram. For instance, the
Antagonists: brachialis and brachioradialis relax
•
brachialis will be striped
blue (prime mover,
) in
A
flexion figure, but
reddish orange (antago-
nist,
) in extension
B
figure.
56
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