Pharynx - superior and middle constrictors (dave's notes)

Question 1

Where does the superior constrictor arise?

Answer 1

Outside the pharyngobasilar fascia

Question 2

What space is associated with the superior constrictor and where? What fills it?

Answer 2

A space exists between the superior constrictor and the base of the skull. This is filled with pharyngobasilar fascia and the auditory tubes.

Question 3

What space is associated with superior and middle constrictors and where? What fills it?

Answer 3

A space between the superior and middle constrictors is plugged by the back of the tongue and is traversed by
Stylopharyngeus
Glossopharyngeal nerve
The lingula nerve
These three structures pass from outside the pharynx to inside the mouth

Question 4

Where does the middle constrictor arise?

Answer 4

From the angle of the stylohyoid ligament and the greater horn of the hyoid arching around to the median raphe

Question 5

What to the upper fibres of the middle constrictor enclose?

Answer 5

The superior contrictor

Question 6

What do the lower fibres of the middle constrictor reach?

Answer 6

They arch down to the vocal folds

Question 7

What is the space between the middle and inferior constricts closed by?

Answer 7

The thyrohyoid membrane

Question 8

What is found in the space between the middle and inferior constrictors?

Answer 8

the internal laryngeal nerve and superior laryngeal vessels