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15 Cards in this Set
- Front
- Back
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Skeleton - consists & composed of? |
Consists of - bones, cartilage, joints, & ligaments
Composed of - 206 bones (80 in axial; 126 in appendicular) |
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Cranial bones (paired - 2 & unpaired - 4) |
Paired - temporal bones, parietal bones
Unpaired - frontal, occipital, sphenoid, ethmoid |
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Four suture of the cranium |
Coronal, sagittal, squamous, lambdoid |
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Glabella of the skull |
Smooth part of frontal bone b/w superciliary arches |
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Facial bones (paired - 6 & unpaired - 2) |
Paired - maxillae, zygomatic, nasal, lacrimal, palatine, inferior nasal conchae
Unpaired - mandible, vomer |
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Paranasal sinuses (location - 4 & function) |
Location - frontal, ethmoid, sphenoid, maxillary
Function - lightens the skull, lined w mucous membranes |
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Hyoid bone (description & location) |
Description - only bone w no direct articulation w any other bone; acts as a movable base for the tongue
Location - inferior to the mandible |
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2 types of intervertebral discs |
Nucleus pulposus - gelatinous inner sphere that absorbs compressive stresses
Annulus fibrosus - outer rings formed of ligament, fibrocartilage & contains the nucleus pulposes |
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Atlas (C1) |
Lacks a body & spinous process, supports the skull, allows flexion & extension of neck (allows nodding the head "yes") |
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Axis (C2) distinct feature |
Dens - projects superiorly Acts as a pivot for rotation of the atlas and skull |
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Ribs (how many?) |
1-7 = true ribs 8-10 = false ribs 11-12 = floating ribs |
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Cleft palate |
Common congenital disorder - Right & left halves of palate fail to fuse medially |
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Stenosis of the lumbar spine |
Narrowing of the vertebral canal - can compress roots of spinal nerve |
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Abnormal spinal curvatures (3) |
Scoliosis - abnormal lateral curvature Kyphosis - an exaggerated thoracic curvature Lordosis - an accentuated lumbar curvature "swayback" |
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Aging of axial skeleton |
- Water content decreases - By age 55, loss of a few centimeters in height - Thorax becomes more rigid, bones lose mass |
