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CDS 442 Test With Complete Solution
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CDS 442 Test With Complete SolutionStylohyoid muscle - Answer Action: Retracts hyoid bone (up and back)
*Suprahyoid
Digastricus muscle - Answer Action: lifts hyoid up and forward (anterior belly) or
backward (posterior belly)
*Suprahyoid
Sternothyroid muscle - Answer Action: depresses thyroid cartilage
*Infrahyoid
Sternohyoid muscle - Answer Action: depresses hyoid bone
*Infrahyoid
Omohyoid muscle - Answer Action: depresses hyoid bone
*Infrahyoid
Thyrohyoid muscle - Answer Action: depresses hyoid (or raises thyroid cartilage)
*Infrahyoid
Lateral Cricoarytenoid muscle - Answer Action: rotates arytenoids inward
*Adductor
Transverse Arytenoid muscle - Answer Action: approximates arytenoids (pulls them
towards one another)
*Adductor
Oblique Arytenoid muscle - Answer Action: approximates apices of arytenoid cartilages
*Adductor
Posterior Cricoarytenoid muscle - Answer Action: pulls muscular process posteriorly
*Abductor
Thyroarytenoid muscle - Answer Action: shortens (increases tenseness); can help with
adduction
*Tensor
Cricothyroid muscle - Answer Action: rocks thyroid cartilage forward (via cricothyroid
joint), decreasing distance between cricoid and thyroid cartilages
, *Tensor
Structure of the Vocal Folds - Answer epithelium: superficial layer
lamina propria: 3 layers
1 elastic fiber layers ... then the vocal ligament is 1 (another) elastic fiber layer 1
collagen (below 1st elastic fiber layer
Movement of Cricoarytenoid Joint - Answer - junction of the arytenoid cartilage and
cricoid cartilage
- saddle joint (rocking and sliding)
- abduct (open) and adduct (close) the vocal folds
Movement of the Cricothyroid joint - Answer - junction of the cricoid cartilage and the
inferior cornu of the thyroid cartilage
- rocking movement of thyroid cartilage down and forward
- changes the length of the vocal folds (pitch)
Hyoid Bone - Answer greater horn -- back one
lesser horn -- front one
Cricoid Cartilage - Answer anterior view so lamina would be on the other side
Thyroid Cartilage - Answer oblique line attaches the sternothyroid and thyrohyoid
muscles that attach to the larynx
lamina on each side both of those faces are the laminae
Arytenoid Cartilage - Answer #4 Muscular Process
#5 Vocal Process
Epiglottis - Answer #1 Epiglottis
Action: seals off the windpipe during eating, so that food is not accidentally inhaled.
Cricotracheal membrane - Answer
Thyrohyoid membrane - Answer
Lateral Thyrohyoid ligament - Answer
Medial Thyrohyoid ligament - Answer
Vocal ligament - Answer
Hyoepiglottic ligament - Answer attaches epiglottis to the hyoid bone
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