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ELAINE N. MARIEB
EIGHTH EDITION
6
Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
PowerPoint® Lecture Slide Presentation by Jerry L. Cook, Sam Houston University
ESSENTIALS
OF HUMAN
ANATOMY
& PHYSIOLOGY
PART C
The Muscular System
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Types of Ordinary Body Movements
Flexion
Extension
Rotation
Abduction
Circumduction
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Body Movements
Figure 6.13a–c
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Body Movements
Figure 6.13d
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Special Movements
Dorsiflexion
Plantar flexion
Inversion
Eversion
Supination
Pronation
Opposition
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Types of Muscles
Prime mover – muscle with the major
responsibility for a certain movement
Antagonist – muscle that opposes or reverses
a prime mover
Synergist – muscle that aids a prime mover in
a movement and helps prevent rotation
Fixator – stabilizes the origin of a prime
mover
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Naming of Skeletal Muscles
Direction of muscle fibers
Example: rectus (straight)
Relative size of the muscle
Example: maximus (largest)
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Naming of Skeletal Muscles
Location of the muscle
Example: many muscles are named for
bones (e.g., temporalis)
Number of origins
Example: triceps (three heads)
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Naming of Skeletal Muscles
Location of the muscle’s origin and insertion
Example: sterno (on the sternum)
Shape of the muscle
Example: deltoid (triangular)
Action of the muscle
Example: flexor and extensor (flexes or
extends a bone)
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Head and Neck Muscles
Figure 6.15
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Deep Trunk and Arm Muscles
Figure 6.17
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Trunk Muscles
Figure 6.16
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Muscles of the Upper Limb
Deltoid
Biceps brachiiTriceps brachii
Extensor digitorumExtensor carpi radialis
Flexor carpi ulnaris
Extensor carpi ulnaris
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Muscles of the Pelvis, Hip, and Thigh
Figure 6.19c
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Muscles of the Lower Leg
Figure 6.20
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Superficial Muscles: Anterior
Figure 6.21
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings
Superficial Muscles: Posterior
Figure 6.22
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Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings