Oral histology and embryology Elsevier Qs chapter 4

4th

Is what week does the heart begin to pump blood throughout the body?

5th

In what week do the nostrils develop?

7th

In what week does the face begin to develop?

Maxillary

The cheeks form from the ——————— processes.

Medial nasal

The philtrum is a vertical groove in the centre of the upper lip created by the ————— ————— process.

Apoptosis

Enzymatic action on epithelial cells causing self-destruction

Primary palate

Anterior wedge shaped process of the hard palate that acts as a floor to the nasal pits.

First

The moveable part of the tongue arises from what pharyngeal arch?

2nd

The immovable part of the tongue is formed by what pharyngeal arch?

Duct

During its descent to the front of the trachea, the thyroid gland is attached to the tongue by a thyroglossal ————

African American female

What population is the least likely to be borne with a cleft lip? The incidence is 1 in 2000 births.

Cleft palate

Aside from cleft lip, what facial malformation is the most common?

Week 7

In what week does the thyroid gland descend to the front of the trachea?

Foramen cecum

The thyroid gland develops in the area of the ——————— ————— on the surface of the tongue.

Oronasal optic groove

What oblique structure extends from the nostrils to the eyes?

Lingual

The ————— tonsil is made of diffuse lymphoid tissue and is located on the dorsal surface of the base of the tongue posterior to the circumvallate lingual papillae.

5th (V), 7th (VII), 9th (IX), 10th (X), and the 12th (XII)

The tongue is innervated by 5 cranial nerves what are they?

D. Frontal process

The forehead develops from which of the following structures that are visible in the human face in the 4th week of prenatal development?

A) mandibular arch

B) hyoid arch

C) oral pit

D) frontal process

Medial nasal process and maxillary process

The upper lip is formed by derivatives of what 2 processes?

3

How many auricular hillocks form from the mandibular arch to create a single ear?