axial skeleton
DESCRIPTION
Axial Skeleton. Skull 8 cranial bones 14 facial bones Middle Ear Bones: 6 Hyoid: 1 Vertebral Column: 26 Thoracic Cage: 25. Appendicular Skeleton. Pectoral Girdle: 4 Upper Limbs: 60 Pelvic Girdle (coxal bone): 2 Lower Limbs: 60 Total: 206. Bones of the Cranium. Occipital - PowerPoint PPT PresentationTRANSCRIPT
Axial Skeleton
– Skull• 8 cranial bones• 14 facial bones
– Middle Ear Bones: 6– Hyoid: 1– Vertebral Column:
26– Thoracic Cage: 25
Appendicular Skeleton
– Pectoral Girdle: 4– Upper Limbs: 60– Pelvic Girdle (coxal
bone): 2– Lower Limbs: 60
• Total: 206
Occipital Bone
• Lambdoidal suture: joins to parietal bone
• Foramen Magnum: hole for spinal cord, nerves, arteries
• Occipital Condyles: bumps that articulate with 1st vertebrae
Parietal Bones
• Sagittal Suture: joins with other parietal bone
• Temporal lines: attachment site for mastication muscles
• Coronal suture: joins with frontal bone
Frontal Bone
• Supraorbital notch: hole for nerves and blood vessels
• Frontal Sinuses: enclosed air spaces that lighten bone, lined with mucous membranes
Temporal Bones
• External acoustic meatus: leads to middle ear
• Mastoid process: attachment site for muscles that will move the neck, will conduct vibrations
• Styloid Process: attachment site for muscles of tongue and throat
Sphenoid Bone
• Sella Turcica: deep saddle-shaped depression that houses the pituitary gland
• Sphenoid Sinuses