Axial_Skeleton

Axial_Skeleton - Axial Skeleton Includes 80 bones Skull(22 bones Hyoid bone Auditory ossicles(6 Vertebral Column(26 vertebrae in adults Skull 8

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Axial Skeleton Includes: 80 bones Skull (22 bones) Hyoid bone Auditory ossicles (6) Vertebral Column (26 vertebrae in adults)
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Skull 8 cranial bones which enclose and protect the brain Two parietal, two temporal, frontal, occipital, sphenoid and ethmoid 14 facial bones two nasal, two maxillae, two zygomatic, two palatine, two lacrimal, two inferior nasal conchae, mandible, vomer
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Function Besides protection of the brain, cranial bones function to: Stabilize the position of the brain, blood vessels and nerves (by attachment to inner surfaces of bones) Provide large areas of attachment for muscles that move the head (by attachment to outer surfaces of bones) Facial bones protect and provide support for entrances to the digestive and respiratory
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Details on Temporal bone markings External auditory meatus = canal in the temporal bone that leads to the middle ear. Mastoid process = rounded projection on temporal bone that serves as attachment site for neck muscles.
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Carotid foramen – hole in temporal bone through which carotid artery passes.
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Details on Occipital bone markings Foramen magnum = largest foramen in skull; medulla oblongata of the brain connects to spinal cord through this foram
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This note was uploaded on 11/10/2011 for the course PDBIO 220 taught by Professor Tomco during the Winter '09 term at BYU.

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Axial_Skeleton - Axial Skeleton Includes 80 bones Skull(22 bones Hyoid bone Auditory ossicles(6 Vertebral Column(26 vertebrae in adults Skull 8

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