Portage Learning: A & P 1, Module 4 Skeletal System
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Portage Learning: A & P 1, Module 4 Skeletal Syst
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Portage Learning: A & P 1, Module 4 Skeletal Syst
Portage Learning: A & P 1, Module 4
Skeletal System
parietal Anstemporal Ansfrontal Ansoccipital Anssphenoid Ansethmoid Ans- small unpaired bone, located in the midline of the anterior cranium, between the two
orbits.
sinus Ans- spaces inside bones
purpose of sinuses Ans- reduces weight...
foramen magnum Ans- allows spinal cord to pass through to brain
external acoustic meatus Ans- allows hearing
cervical vertebrae Ans- C1-C7, small body, large vertebral foramen, straight & narrow spinous process,
transverse process & transverse foramen (passage of vertebral arteries)
atlas Ans- C1, large vertebral foramen allows for passage of brain stem and spinal cord, no body
axis Ans- C2, odontion process sticking out, allows for rotation of the skull
thoracic vertebrae Ans- T1-T12; second set of 12 vertebrae; costal facets that articulate with the 12 pairs
of ribs ; superior and inferior facets ; long and pointed spinous process
lumbar vertebrae Ans- L1-L5, large body to support weight of vertebral column,
sacrum Ans- 5 fused vertebrae, separate at birth
coccyx Ans- tailbone, attachment point for muscles
zygomatic Ans-
thoracic cage Ans- 24 ribs, 1 sternum
sternum Ans- breastbone
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