The document provides an overview of the axial musculature, which consists of muscles of the head and neck, spine, and ribs. It defines important muscle terminology like origin, insertion, agonist, and antagonist. It then describes the major muscle groups in these regions, including muscles of the eye, face, tongue, neck, spine, respiration, abdominal wall, and pelvic floor. Key muscles are identified along with their actions, locations, and relationships to surrounding structures. Diagrams are included to illustrate muscle arrangements.
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Chapter11 musclespart1marieb
1. Ch 11, Muscles of the Body
Part 1: The Axial Musculature
Consists of the
Head and Neck
Spine
Ribs
Know the Terms:
Origin, Insertion, Action
Agonist (prime mover) and Antagonist
Synergist
Developed by
John Gallagher, MS, DVM
3. Some Nomenclature Aids
Location, e.g., intercostal
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Shape, e.g. deltoid
Size, e.g., gluteus maximus
Direction of fibers, e.g., rectus, oblique
Location of origin and/or insertion, e.g.,
sternocleidomastoid
Number of origins, e.g., biceps brachii
Action (flexor, extensor, etc.)
Superficial, big, important
7. Tongue (glosso) and related muscles
Genioglossus
Inferior aspect of
tongue
Styloglossus
Hyoglossus
Genio- = chin
Glosso = tongue
8. Eye (Ch 16)
•Rectus muscles:
•Medial and Lateral
•Superior and Inferior
• Oblique muscles
•Superior and Inferior
•Note the trochlea
•Levator palpebrae superioris
Fig. 16-6
We’ll see these again, in Special Senses