Week 14 - ENT & Face

Question 1

Which cranial nerve is related to the posterior wall of the middle ear?

1. Facial nerve
2. Trochlear nerve
3. Glossopharyngeal nerve
4. Spinal accessory nerve
5. Oculomotor nerve

Answer 1

Which cranial nerve is related to the posterior wall of the middle ear?

1. Facial nerve
2. Trochlear nerve
3. Glossopharyngeal nerve
4. Spinal accessory nerve
5. Oculomotor nerve

Note:

Facial nerve exits the internal acoustic meatus with CN VIII. Facial nerve moves around the face dividing into 5 different branches in the parotid gland.

Trochlear and oculomotor nerve exits out the superior orbital fissure

Glossopharyngeal, Vagus and spinal accessory nerve exit out of the Jugular foramen.

Question 1

To where does the maxillary sinus drain?

• a. Inferior meatus
• b. Middle meatus
• c. Palatine tonsil
• d. Pharyngotympanic tube
• e. Superior meatus

Answer 1

The maxillary sinuses drains into the:

• a. Inferior meatus
• b. Middle meatus
• c. Palatine tonsil
• d. Pharyngotympanic tube
• e. Superior meatus

The pyramid-shaped maxillary sinus (or antrum of Highmore) is the largest of the paranasal sinuses, and drains into the middle meatus of the nose through the osteomeatal complex.

Question 2

The medial 2/3 of the external acoustic meatus has ________ walls; the lateral 1/3 of the external acoustic meatus has _________ walls.

Answer 2

The medial 2/3 of the external acoustic meatus has bony walls; the lateral 1/3 of the external acoustic meatus has cartilagenous walls.

Medial 2/3 of the external acoustic meatus bony walls are made up by the temporal bone.

Question 3

The vast majority of nosebleeds are anterior/posterior (circle) and emanate from which site?

Answer 3

The vast majority of nosebleeds are (circle) anterior and emanate from Little’s area = Kiesselbach’s plexus.

Question 4

What are the 3 ossicles of the ear?

(middle ear)

Answer 4

MIS

Malleus, Incus, Stapes

Question 4

What are the 3 ossicles of the ear?

(middle ear)

Answer 4

MIS

Malleus, Incus, Stapes