The Muscular System - Anatomy Coloring Sheet Page 21

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LWBK244-4102G-C04_48-69.qxd 12/11/08 6:12 PM Page 68 LWBK160-3985G-C95_1329-135#C1BC
Coloring Exercise 4-11
Skeletal Muscle Review (Part 2)
Movements at the Thigh Joint
COLORING INSTRUCTIONS
• The femur moves relative to the pelvis
Coloring Exercises 4-10 and
4-11 categorize muscles by
• Flexion: iliopsoas (prime mover), sartorius (weak flexor; used for sitting cross-
the actions they produce.
legged), rectus femoris
The accompanying figures
• Extension: gluteus maximus (especially when climbing or jumping), hamstring
only show the superficial
group
muscles. Some of the mus-
• Abduction: gluteus medius
cles discussed in the narra-
tive are deep muscles and
• Adduction: adductor longus, adductor magnus, gracilis
thus are not illustrated.
1. Review the muscles in-
Movements at the Knee Joint
volved in each action.
2. Write the names of the
• The tibia/fibula move relative to the femur
muscles in the blanks.
• Flexion: hamstring group (biceps femoris, semimembranosus, semitendi-
The answers are in Ap-
nosus), gracilis, sartorius (weak)
pendix I at the back of
• Extension: quadriceps group (rectus femoris, vastus medialis, vastus lateralis,
the book.
vastus intermedius)
Movements at the Ankle Joint
• The foot moves relative to the tibia/fibula
• Dorsiflexion: tibialis anterior
• Plantar flexion: gastrocnemius (prime mover), soleus
• Inversion: tibialis anterior
• Eversion: peroneus longus
Movements of the Toes
• Flexion: flexor digitorum groups
• Extension: extensor digitorum groups
Maintenance of Body Posture
• Gluteus maximus: supports upright posture
• Gluteus medius: stabilizes pelvis during walking
• Iliopsoas: prevents upper body from falling backward when standing erect
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