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62 The pharynx and larynx

Superior constrictor
Nerves Vocal process
Buccinator
Glossopharyngeal
Pterygomandibular Epiglottis
ligament
Thyroid
Stylopharyngeus cartilage
Stylohyoid ligament Arytenoid Vocal
Superior laryngeal Muscular ligament
Internal laryngeal process Cricovocal
Attachment of External laryngeal Crico- membrane
thyrohyoid arytenoid
Attachment of joint Cricoid
sternohyoid Facet for First ring
Inferior constrictor inferior horn of trachea
Cricothyroid of thyroid
Cricoid cartilage
Recurrent laryngeal Fig.62.2
A midline section of the larynx to show the
Oesophagus cricovocal membrane and vocal ligaments
Fig.62.1
The pharynx and larynx, and some of the related nerves

Greater horn of hyoid
Epiglottis
Epiglottis
Ala of thyroid cartilage

Arytenoid
Muscular process
Crico-arytenoid muscle
Cricothyroid
(posterior)
Position of Cricoid
synovial joint
Fig.62.3
Left, the cricothyroid muscle and right, the posterior crico-arytenoid

Vocal ligament Glossoepiglottic
Base of tongue
Thyro-arytenoid fold
muscle Vallecula Epiglottis
Vocal process Epiglottic
False tubercle
Lateral
cord Vocal fold
crico-arytenoid
Vestibular fold
Posteror Trachea
crico-arytenoid Aryepiglottic
Fig.62.4 fold
The muscles causing abduction, adduction and relaxation Fig.62.5
of the vocal cords. Tightening of the cords is shown in Fig.62.3 The larynx as seen through a laryngoscope

138 Head and neck