KIN 270 - Axial Skeleton, Vertebrae / Ribs / Sternum | Quizlet

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46 Terms

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Hyoid

a U-shaped bone in the neck that supports the tongue.

<p>a U-shaped bone in the neck that supports the tongue.</p>
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what is special about the hyoid?

only bone that does not attach to any other bone; held in place by muscle

<p>only bone that does not attach to any other bone; held in place by muscle</p>
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Cervical Vertebrae (C1-C7)

neck region of the spine

<p>neck region of the spine</p>
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Cervical vertebra features

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how many cervical vertebrae?

7

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Atlas/C1

supports head, movement up and down

<p>supports head, movement up and down</p>
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C1 - articular facet for dens

on posterior surface of anterior arch

<p>on posterior surface of anterior arch</p>
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C1 - transverse process

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C1 - transverse foramen

only found in the cervical vertebrae and allow passage of the vertabral artery, vein, and nerve

<p>only found in the cervical vertebrae and allow passage of the vertabral artery, vein, and nerve</p>
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C1 - vertebral foramen

anterior part holds the dens and the larger posterior part holds the spinal cord.

<p>anterior part holds the dens and the larger posterior part holds the spinal cord.</p>
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C2 - dens

Projects superiorly and articulates with C1 and allows head to shake "no"

<p>Projects superiorly and articulates with C1 and allows head to shake "no"</p>
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C2 - transverse process

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C2 - transverse foramen

passage for vertebral arteries and accompanying veins

<p>passage for vertebral arteries and accompanying veins</p>
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C2 - vertebral foramen

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Thoracic Vertebrae (T1-T12)

second set of 12 vertebrae; they articulate with the 12 pairs of ribs to form the outward curve of the spine

<p>second set of 12 vertebrae; they articulate with the 12 pairs of ribs to form the outward curve of the spine</p>
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how many thoracic vertebrae?

12

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Lumbar Vertebrae (L1-L5)

third set of 5 larger vertebrae, which forms the inward curve of the spine

<p>third set of 5 larger vertebrae, which forms the inward curve of the spine</p>
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how many lumbar vertebrae?

5

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Thoracic vertebra features

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Lumbar vertebra features

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Distinguish between C, T and L vertebrae

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Vertebral body

part of a vertebra that transfers weight along the axis of the vertebral column

<p>part of a vertebra that transfers weight along the axis of the vertebral column</p>
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Spinous process

sharp, slender projection. Can feel on your back

<p>sharp, slender projection. Can feel on your back</p>
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what is special about cervical vertebrae spinous process?

bifid (split)

<p>bifid (split)</p>
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Transverse process

two lateral projections from the vertebral arch

<p>two lateral projections from the vertebral arch</p>
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Transverse process (cervical)

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Vertebral foramen

canal through which spinal cord passes

<p>canal through which spinal cord passes</p>
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concave

curving inward

<p>curving inward</p>
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convex

curved outward

<p>curved outward</p>
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Cervical curvature

concave - C1-C7

<p>concave - C1-C7</p>
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Thoracic curvature

convex - T1-T12

<p>convex - T1-T12</p>
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Lumbar curvature

concave - L1-L5

<p>concave - L1-L5</p>
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Sacral curvature

convex - S1-S5

<p>convex - S1-S5</p>
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Sacrum (5 fused)

Is formed by union of 5 sacral vertebrae and serves as a strong foundation for the pelvic girdle

<p>Is formed by union of 5 sacral vertebrae and serves as a strong foundation for the pelvic girdle</p>
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how many vertebrae make up the sacrum?

5

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Coccyx (4 fused)

tailbone

<p>tailbone</p>
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how many vertebrae make up the coccyx?

4

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Ribs

The bones in the chest that protect the heart and lungs.

<p>The bones in the chest that protect the heart and lungs.</p>
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True ribs (1-7)

directly attach to the sternum via cartilage

<p>directly attach to the sternum via cartilage</p>
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False ribs (8-10)

attach indirectly to sternum by joining costal cartilage of rib above

<p>attach indirectly to sternum by joining costal cartilage of rib above</p>
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Floating ribs (11 & 12)

last pair of ribs of the bottom ribcage, not connected to cartilage

<p>last pair of ribs of the bottom ribcage, not connected to cartilage</p>
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Costal cartilage

the cartilages that connect the sternum and the ends of the ribs

<p>the cartilages that connect the sternum and the ends of the ribs</p>
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Sternum

breastbone

<p>breastbone</p>
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Manubrium of sternum

top of sternum

<p>top of sternum</p>
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Body of sternum

middle portion of the sternum

<p>middle portion of the sternum</p>
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Xyphoid process of sternum

bottom of sternum

<p>bottom of sternum</p>