2.9 larynx structure and function

5= longis capitis muscle
6= common carotid artery, vagosympathetic trunk, & medial retropharyngeal lymph nodes
7&8= maxillary and lingofacial veins
9= thyroid cartilage
10= oesp[hagus
11= sternohyoid muscles
12= sternomastoid muscles
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Terms in this set (14)
5= longis capitis muscle
6= common carotid artery, vagosympathetic trunk, & medial retropharyngeal lymph nodes
7&8= maxillary and lingofacial veins
9= thyroid cartilage
10= oesp[hagus
11= sternohyoid muscles
12= sternomastoid muscles
label 5-12

9 not important
Image: 5= longis capitis muscle 6= common carotid artery, vagosympathetic trunk, & medial retropharyngeal lymph nodes 7&8= maxillary and lingofacial veins 9= thyroid cartilage 10= oesp[hagus 11= sternohyoid muscles 12= sternomastoid muscles
larynx functions
guards the entrance of the trachea during swallowing
regulates the amount of air entering the lower respiratory passageways (via glottis)
vocalisation (varies tension)
the larynx is attached to the cranium between the rami of the mandibles by ?
the hyoid apparatus
what are the 4 laryngeal cartilages?
epiglottis, thyroid, arytenoid, cricoid

that's rostral to caudal
epiglottis
A flap of tissue that seals off the windpipe and prevents food from entering. does not close the entrance of the larynx.

elastic cartilage

articulate with thyroid cartilage.
thyroid cartilage
articulates the thyrohyoid bone and arch of cricoid cartilage. forms the adams apple

hyaline cartilage
cricoid cartilage
ring-shaped. has stabilizing role.

articulates the arytenoids and thyroid cartilages

hyaline cartilage
arytenoid cartilages
PAIRED

articulate with cricoid cartilage
supports vocal fold and contributes to glottis

mainly hyaline cartilage
laryngeal aditus
entrance to the larynx

formed by the epiglottis, corniculate process of the arytenoid cartilages, and aryepiglottic folds
1- thyrohyoid articulation
2- epiglottis
3- medial recess
4- vocal fold
5- vestibular fold
6- lateral ventricle
7- vocal fold
8- thyroid cartilage
9- cricoid cartilage
10- infraglottic cavity
11- first tracheal cartilage
12- trachea
label
Image: 1- thyrohyoid articulation 2- epiglottis 3- medial recess 4- vocal fold 5- vestibular fold 6- lateral ventricle 7- vocal fold 8- thyroid cartilage 9- cricoid cartilage 10- infraglottic cavity 11- first tracheal cartilage 12- trachea
the glottis controls what about the air entering the trachea?the amount of air closes during swallowinghow does the larynx protect the lower respiratory passageways during swallowinginhibits inspirationhow is the larynx involved in vocalization?narrowing and widening of the glottis causes air to vibrate the vocal folds.how is pitch altered?the length and tension of the vocal folds though the action of Cricothyroid mm. / Thyroarytenoid mm.