Chapter7 - KIN 216 Applied Human Anatomy Chapter 7 Slides...

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Unformatted text preview: KIN 216 Applied Human Anatomy Chapter 7 Slides adapted from Dr Pfeiffer Axial Skeleton Skeleton 206 bones Bilateral being Axial skeleton 80 bones Skull Vertebral column Thoracic cage Appendicular skeleton (ch 8) Upper and lower limbs Pectoral and pelvic regions Skull Most complex bony structure Cranial bones (cranium) Vault (aka calvaria) = superior, lateral, posterior, forehead Base (aka floor) = inferior Facial bones (anterior surface and hold teeth) Mostly flat bones held together by sutures (type of articulation; fairly immovable with zig-zag pattern) Longest sutures connect cranial bones (coronal, sagittal, squamous, lambdoid) Other sutures are named for bones they connect Skull Cranial cavity = brain occupies Smaller cavities Middle ear Inner ear Nasal Orbits Paranasal sinuses 85 openings (foramina, canals, fissures) Spinal cord Major blood vessels Cranial nerves Cranial Cavity Orbit Oral Nasal Cranial Bones 8 large bones form shell Paired parietal and temporal Unpaired frontal, occipital, sphenoid, ethmoid Cranial Bones Frontal bone Supraorbital margin Glabella = smooth part of forehead between eyebrow arches Cranial Bones Parietal bones 4 major sutures Coronal suture = parietals + frontal Squamous sutures (2) = parietal + temporal Sagittal suture = parietal + parietal Lambdoid suture = parietals + occipital Cranial Bones Sutural bones Occur within sutures (esp. lambdoid) Irregular and NOT all people have them More prevalent in individuals of Asian ancestry http://www.mesacc.edu/~minckley/anatomy/skull.htm Cranial Bones Occipital bone Posterior Base has foramen magnum (inferior part of brain connects to spinal cord here) Occipital condyles = articulate with 1 st vertebra Cranial Bones Temporal bones Located inferior to parietal bones 4 major regions Squamous = has zygomatic process Tympanic = surrounds external acoustic meatus and has styloid process Mastoid = has mastoid process Petrous = projects medially looks like bony wedge between occipital bone and sphenoid bone; holds cavities of middle ear and inner ear Temporal Bone Cranial Bones...
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This note was uploaded on 10/17/2011 for the course KINESIOLOG 216 taught by Professor Vollner during the Spring '11 term at Michigan State University.

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Chapter7 - KIN 216 Applied Human Anatomy Chapter 7 Slides...

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