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Anatomy for Voice/Laryngeal Function - Coggle Diagram
Anatomy for Voice/Laryngeal Function
larynx sits on top of trachea
Larynx: from root of tongue to trachea
Level of C4-C6
Larynx Fxn
primary is to protect airy (vegetative)
blocks foreign objects, expels objects, aids load-bearing actions for pressure build up
Secondary is speech
epiglottis has only vegetative fxn; no role in speech production
structures of larynx
bony
hyoid bone, cricoid cartilage, thyroid cartilage, arytenoid cart
muscles
extrinsic laryngeal, intrinsic laryngeal
VF are abducted during respiration-allows air flow to occur
hyoid bone
u shaped bone not attached to any other bone
larynx suspended from this bone
what might be important for client to know?
dysfunction when broken or swallow
Cartilages
Cricoid
unpaired
ring shaped that sits just above the trachea
Thyroid
unpaired
Arytenoid
sit on tops of cricoid cartilage
VF attach to them and when they swivel is when VF open and close
Cricoarytenoid movements
very important for movement of the Vf
Rocking primary
Sliding-secondary
Muscles
Intrinsic: both ends attach w/in larynx-movement happening INSIDE the larynx
Extrinsic: one end attached w/in larynx, one end attached outside-movement depends on origin/insertion of the attachment
muscles abducct and adduct but it is the pressure that is actually moving them