lecture 6.4: skeletal system
DESCRIPTION
Lecture 6.4: Skeletal System. The Skull. AKA: The Cranium Protects our brain Gives us our senses. Frontal Bone. Forehead Orbits—spaces for eyes Frontal sinuses—air-filled chambers Lighten bone Produce mucus for nasal cavity. Figure 6.10. Parietal Bone (Paired). - PowerPoint PPT PresentationTRANSCRIPT
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Lecture 6.4: Skeletal System
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AKA: The Cranium Protects our brain Gives us our senses
The Skull
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Forehead Orbits—spaces for eyes Frontal sinuses—air-filled chambers Lighten bone Produce mucus for nasal cavity
Frontal Bone
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Figure 6.10
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Posterior to frontal bone Sagittal suture—locks 2 bones together Coronal suture--locks parietal to frontal
Parietal Bone (Paired)
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Figure 6.15b
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Most posterior Lambdoid Suture—locks occipital with
parietal Foramen magnum—where spinal cord
passes
Occipital Bone
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Figure 6.10
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Below parietal Squamous suture—connects parietal to
temporal
Temporal Bone (Paired)
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Figure 6.10
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Part of floor of cranium Unites cranium and facial bones Sella turcica—depression that houses
pituitary gland
Sphenoid Bone
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Figure 6.12a
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Anterior to sphenoid Medial eyes and roof and sides of nasal
cavity Nasal septum—divides nose into left/right
sides
Ethmoid Bone
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Figure 6.12a