Phonatory System Anatomy- Supportive framework

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7 Terms

1
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What do the cricotracheal membrane and hyoid bone provide?

Circotracheal membrane and hyoid bone provide supportive framework for larynx

2
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cricotracheal membrane

ligament secures the larynx to top of trachea

<p>ligament secures the larynx to top of trachea</p>
3
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hyoid bone

U-shaped bone located above larynx, attaches to larynx via membrane and ligaments

<p>U-shaped bone located above larynx, attaches to larynx via membrane and ligaments</p>
4
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why Is the hyoid bone unique?

Only bone in body not attached to another bone

- Located along or suspended in muscular sling

- Larynx made up of cartilage not bones

5
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What is the result of the hyoid bone being unique?

can be pulled in 3 direction by muscles (ultimately moving larynx in these directions)

6
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what are the 3 directions the hyoid bone can be pulled by muscles

forward and up
back and up
downward
---> also involved with tongue and mandible

7
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what does the supportive framework do?

1) secures larynx in place and 2) allows for variety of movements