Chapter11 musclespart1marieb
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The document provides an overview of the axial musculature, which consists of muscles of the head and neck, spine, ribs, and related terms. It lists and briefly describes several key muscle groups in these areas, including muscles of the head, neck, eyes, spine, respiration, abdominal wall, and pelvic floor. Anatomical terms and some notable muscles are highlighted.
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
- 3. Some Nomenclature Aids Location, e.g., intercostal 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.) Page 271 Superficial, big, important
- 4. Superficial muscles Fig 11-7 a and b
- 5. The Head (and face) orbicularis oculi orbicularis oris risorius platysma
- 6. Muscles of Mastication (chewing) Masseter Temporalis Buccinator
- 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 We’ll see these again, in Special Senses
- 9. The Neck Digastric Sternocleidomastoid (two heads, or origins) Suprahyoid Group Infrahyoid Group
- 10. The Spine Trapezius Deltoid Infraspinatus Latissimus dorsi
- 11. More Spine Flap for breast reconstruction 1. Pectoantebrachialis 2. Pectoralis major 3. Pectoralis minor 4. Xiphihumeralis 5. External Oblique 6. Latissimus dorsi 7. Epitrochlearis 8. Clavobrachialis
- 12. The Neck & Spine: For posture erector spinae group: Longissimus Iliocostalis Spinalis
- 13. Respiration Diaphragm Dome-shaped Intercostals External - for inspiration Internal – for expiration
- 14. The Abdominal Group Abdominal wall: Rectus abdominis Int. and ext. obliques Transversus abdominis Tendinous intersections (inscriptions, insertions) The “six pack” Linea alba Inguinal rings
- 16. Pelvic Floor, female Pelvic Diaphragm Levator ani Coccygeus External Urethral Sphincter External Anal Sphincter