Pharyx

Question 1

Define torus.

Answer 1

Bump of cartilage that helps the eustachian tube stay open

Question 2

Define epiglottis.

Answer 2

Muscular flap that keeps food from entering the larynx

Question 3

Which concha has its own bone?

Answer 3

The inferior concha

Question 4

What’s unique about the cricoid cartilage.

Answer 4

It’s the only complete ring in the respiratory system.

Question 5

What should occur for a rapid death when being hanged?

Answer 5

When being hanged properly, the dens of axis should pop out and crush the medulla/crush the spinal cord for a rapid death. Otherwise, one would strangle to death for 5 minutes.

Chicken bones can pierce the buccopharyngeal fascia, enter the retropharyngeal space, which can go all the way down to the heart and can cause an infection that can reach the heart.

Question 6

What is the buccopharyngeal fascia?

Answer 6

The buccopharyngeal fascia - coats the back and surrounds the pharynx

Question 7

What is the retropharyngeal space?

Answer 7

The retropharyngeal space - potential space that does not exist in the living

Question 8

What is the Prevertebral fascia?

Answer 8

Prevertebral fascia - Coats the vertebral bodies and muscles at back of the pharynx

Question 9

How can a chicken bone infect the heart?

Answer 9

Chicken bones can pierce the buccopharyngeal fascia and enter the retropharyngeal space, which extends all the way down to the heart and can cause an infection that can reach the heart.

Question 10

What is the function of the stylohyoid ligament?

Answer 10

The stylohyoid ligament connects the styloid with the lesser horn of the hyoid.

Question 11

What innervates the pharyngeal constrictors (superior, middle, and inferior)?

Answer 11

CN X

Question 12

What in the insertion of the pharyngeal constrictors (superior, middle, and inferior)?

Answer 12

median raphe of pharynx

Question 13

What in the action of the pharyngeal constrictors (superior, middle, and inferior)?

Answer 13

To prevent food from passing between the muscles; roll bolus and passes it down

Question 14

What is the blood supply of the pharynx?

Answer 14

The ascending pharyngeal of the external carotid.

Question 15

Origin of the Stylopharyngeus?

Answer 15

Medial side of the styloid process

Question 16

Insertion of the Stylopharyngeus?

Answer 16

Upper border of the thyroid cartilage

Question 17

Innervation of the Stylopharyngeus?

Answer 17

CN IX glossopharyngeal nerve

Question 18

Action of the Stylopharyngeus?

Answer 18

Elevates the larynx and pharynx to aid in swallowing

Question 19

As soon as the ___________________ reaches the jugular foramen it becomes the ______________, which drains the brain.

Answer 19

As soon as the sigmoid sinus reaches the jugular foramen it becomes the jugular vein, which drains the brain

**NO JUGULAR IN THE BRAIN

Question 20

Origin of the Cricothyroid?

Answer 20

External branch of superior laryngeal branch of vagus nerve (X)

Question 21

Insertion of the Cricothyroid?

Answer 21

thyroid cartilage

Question 22

Innervation of the Cricothyroid?

Answer 22

External branch of superior laryngeal branch of vagus nerve (X)

Question 23

Action of the Cricothyroid?

Answer 23

Lengthens and tenses vocal cords by tilting thyroid cartilage forwards

Question 24

What are the functions of the branches of the superior laryngeal nerve from CN X?

Answer 24

The internal laryngeal nerve is sensory above the cords, but does no muscles. It pierces the thyrohyoid membrane.

The external laryngeal nerve is motor to cricothyroid; no sensory component.