Anatomy Lab 1 Quiz- Pharynx, Larynx, Nasal and Oral Cavities

Question 1

What structures form the medial and lateral walls of the nasal cavity?

Answer 1

Medial wall: Nasal septum

Lateral Wall: Nasal meatuses

Question 2

Where is a nosebleed most likely to occur?

Answer 2

Kiesselbach’s plexus

Question 3

Where does fluid from the paranasal air sinuses drain into the nasal cavity?

Answer 3

Superior meatus
-Posterior ethmoid cells

Middle Meatus
-Ethmoid Bulla–>ethmoid middle cells

-Semilunar hiatus–>Frontal sinus, anterior ethmoid cells, maxillary sinuses

Inferior meatus
-Nasolacrimal duct

Sphenoethmoidal recess
-sphenoid sinus

Question 4

What important structure is located in the nasopharynx and equilibrates pressure within the middle ear?

Answer 4

Salpingopharyngeus, which arises from the eustachian tube

Question 5

What is the innervation of the levator veli palatini, tensor veli palatini and other pharyngeal muscles?

Answer 5

Tensor veli palatini- V3

Levator veli palatini and all other pharyngeal muscles except the genioglossus- Vagus nerve (Via pharyngeal plexus)

Question 6

What is the foramen cecum? How is it related to the thyroid gland?

Answer 6

The foramen cecum divides the tongue into an anterior 2/3rds and posterior 1/3rd.

It is where the thyroid develops from embryologically

Question 7

What structures are found in the larynx?

Answer 7

Vocal folds

Question 8

What is the clinical significance of the retropharyngeal space?

Answer 8

Infections can spread here