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Flashcards in A & P Deck (13):
1

What is the only floating bone in body besides patella (knee cap)?

Hyoid Bone

2

What is the leaf-like cartilage that acts as a protective structure when it inverts to cover the laryngeal opening during swallowing?

Epiglottis

3

What is the largest of the laryngeal cartilages?

Thyroid Cartilage

4

What ride on the high-backed upper surface of the cricoid cartilage, forming the posterior point of attachment for the vocal folds?

Arytenoid cartilages

5

What sit at the apex of the arytenoid cartilages, horn-like shaped?

Corniculate cartilages

6

What are paired wedge-shaped rods embedded within the aryepiglottic folds

Cuneiform Cartilages

7

What is the complete ring sitting on top of the trachea, on lateral view it gives the appearance of a signet ring (back arches up relative to the front)?

Cricoid cartilage

8

Name the 3 parts of the hyoid bone.

1. Greater horns
2. Lesser horns
3. Corpus (body)

9

What do the 2 vocal processes on the arytenoids connect to?

Thyromuscularis and Thyrovocalis muscles

10

Name the 5 layers of the vocal folds

1. Epithelium-Thin sheet of squamous
(Lamina Propria-which is comprised of three different tissues)
2. Superfical Layer
3. Intermediate Layer
4. Deep Layer
5. Thyroarytenoid muscle

11

What are the ventricular folds?

a.k.a. false (vocal) folds, vestibular folds
-thick folds of mucous membrane
-above true vocal folds
-not used in normal phonation

12

What 4 functions of the larynx are there?

1. RESPIRATION = breathing for life (open glottis)
2. PROTECTION with cough reflex: Close, then open glottis with help of respiratory system
3. PROTECTION during swallowing: Close glottis with help of respiratory system
4. PHONATION with voice: Close/open
glottis and adjust vocal fold tension

13

What 3 planes does the rib cage move on inspiration?

1. Vertical dimension is increased by the contraction of the dome-shaped diaphragm.
2. Transverse (side to side) dimension is increased by raising of the curved ribs.
3. Anterior-posterior dimension is increased by simultaneous forward and upward movement of the sternum.