68 ANATOMY AND PHYSIOLOGY. 



Thyreo-hyoideus arises from part of the basis and horn of the os 

 hyoides. Inserted into the side of the thyroid cartilage. Use 

 To raise the cartilage and depress the bone. 



Crico-thyroideus arises from the side of the cricoid cartilage. In- 

 serted into the inferior horn of the thyroid cartilage. Use To 

 pull the thyroid cartilage towards the cricoid. 



MUSCLES SITUATED BETWEEN THE LOWER JAW AND OS HYOIDES, 



LATERALLY. 



Stylo-glossus arises from the apex of the styloid process. In- 

 serted into the side of the root of the tongue. Use To pull the 

 tongue backwards. 



Stylo-hyoideus arises from the basis, and about the middle of the 

 styloid process. Inserted into the basis of the os hyoides. Use 

 To draw the os hyoides upwards. 



Stylo-pharyngeus arises from the root of the styloid process. 

 Inserted into the edge of the pharynx, and back of the thyroid car- 

 tilage. Use To dilate the pharynx, and raise the cartilage. 



Circumflexus arises near the Eustachian tube, and passes through 

 the hamulus of the pterygoid process, to be inserted into the velum 

 pendulum palati. Use To draw the velum pendulum palati ob- 

 liquely downwards, and stretch it. 



Levator palati mollis arises from the point of the os petrosum, 

 the Eustachian tube, and sphsenoid bone. Inserted into the velum 

 pendulum palati, being expanded upon it. Use To pull the velum 

 pendulum backwards and upwards. 



MUSCLES SITUATED ABOUT THE ENTRY OF THE FAUCES. 



Constrictor ist hm faucicum arises near the root of the tongue, 

 on each side, and goes round, to be inserted into the middle of the 

 velum pendulum palati, near the uvula. Use To raise the tongue, 

 and draw the velum towards it. 



Palato-pharyngeus arises from the middle of the soft palate, goes 

 round the entry of the fauces, the tendon of the circumflexus palati, 

 and velum pendulum palati, to be inserted into the upper and pos- 

 terior part of the thyroid cartilage. Use To contract the arch of 

 the fauces. 



Jlzygos uvulae arises from the commissure of the ossa palati. 

 Inserted into the extremity of the uvula. Use To shorten and 

 raise the uvula. 



MUSCLES SITUATED ON THE POSTERIOR PART OF THE PHARYNX. 



Constrictor pharyngis inferior arises from the cricoid and thy- 



