30 THE POCKET ANATOMY 



carotid artery, pneumogastric and sympathetic nerves, middle con- 

 stricter and stylo-pharyngeus, etc., lie on outer surface. 



Stylo-pharyngeus : inner surface of base of styloid pro- 

 cess^) pharynx and posterior border of thyroid carti- 

 lage^) (Glosso-pharyngeal). [Raises pharynx over food 

 in swallowing.] Passes between external and internal carotid 

 arteries. 



PALATAL REGION. 



Levator palati sunder surface of apex of petrous portion of 

 temporal, lower margin of cartilage of Eustachian tube(T) 

 middle line of soft palate(p) (Pharyngeal plexus). [Raises 

 palate, shutting off naso-pharynx.] 



Tensor vel circumflexus palati : scaphoid fossa of sphenoid, 

 outer side of Eustachian tube, spine of sphenoid(F) (turns 

 round hamular process] posterior border of hard palate, 

 aponeurosis of soft palate(A) (Otic ganglion). [Raises and 

 makes tense soft palate.] 



Azygos uvulae : posterior nasal spine of palate bone(p) tip 

 of uvula(F) (Pharyngeal plexus). [Shortens uvula.] 



Palato-glossus (anterior pillar of soft palate] : side and dorsum 

 of tongue (F) anterior and lateral surface of soft palate(p) 

 (Pharyngeal plexus). [Tends to approximate back of tongue 

 and soft palate.] 



Palatp-pharyngeus (posterior pillar of soft palate] : Anterior 

 fibres join opposite muscle at middle line lying between the 

 levator and tensor. Posterior fibres join opposite fellow at 

 middle line(p) (Pharyngeal plexus). Salpingo-pharyngeus : 

 lower edge of cartilage of Eustachian tube posterior border 

 of thyroid cartilage, side of pharynx(p). [A raises pharynx ; 

 B will, with palato-glossus, shut off mouth from naso- 

 pharynx.] 



INTRA-LARYNGEAL REGION. 



Crico-thyroideus : lower cornu and lower border of thyroid 

 cartilage(p) front and side of cricoid cartilage(p) (External 

 laryngeal). [Rotates posterior part of cricoid downwards and 

 backwards, and so makes vocal cords tense.] 



Thyro-arytenoideus : lower half of receding angle of thyroid 

 cartilage, crico-thyroid membrane(p). Two sets of fibres. 

 Internal, edge of vocal process(F) External, outer surface of 

 arytenoid cartilage(p) (Recurrent laryngeal). [Slackens vocal 

 cords.] 



