Oral histology and embryology elsevier Qs chapter 3

Ectoderm

The outer surface of each embryonic arch is covered with:

Pharyngeal arches

Blood vessels, muscles, nerves, cartilages, and bones will differntiate from the ——————— —————

Foregut

The ————— is an elongated tube formed by the one yolk sac of the primitive oropharynx.

Third

The lower part of the body of the hyoid and the greater Cornu of the hyoid are skeletal derivatives of what pharyngeal arch?

Fourth

The laryngeal cartilages arise from what pharyngeal arch?

First

The maxillary tissues that form the cheeks grow from what pharyngeal arch?

Second

The muscles of facial expression grow from what pharyngeal arch?

Thyroid

What gland produces the hormone calcitonin?

Dorsal aorta

Blood vessels of the fourth pharyngeal arch form the:

Third

The ————— arch vessels become the common carotid arteries, which supply the neck, face, and brain.

Nerves

————— develop at the same times as muscle fibres form.

Reichert

The ——————— cartilage is a rod-shaped cartilage of the 2nd pharyngeal arch. The stapes, styloid process, lesser horn, and upper body of the hyoid bone form from this arch.

D. Maxillary

Which bone forms directly from connective tissue, with no cartilage framework?

A) malleus

B) occipital

C) sphenoid

D) maxillary

Alveolar process

Tooth development occurs in which part of the mandible?

B. Serrated

Which bony suture if the face is defined as interdigitating?

A) simple

B) serrated

C) beveled

D) squamousal

B. Synostosis

Which type of articulation is bone to bone?

A) dysostosis

B) synostosis

C) syndesmosis

D) synchondrosis

Lungs

The 6th pharyngeal arch vessels supply the ————— with circulation.

5th

The first muscle cells of the head and neck appear in what prenatal week?

External carotid

After 7 weeks, blood circulation to the face and neck shifts from the internal carotid artery to the:

Facial nerve

What is the VII (7th) cranial nerve called?

Vagus nerve

What is the 10th cranial nerve?

glossopharyngeal nerve

What is the 9th cranial nerve?