Question 1

The foramen cecum is the point where the thyroid gland begins to develop. It is a small depression near the eustachian tube.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. B

Question 2

Both the muscles of mastication and the muscles of facial expression are innervated by the fifth cranial nerve. The muscles of mastication arise from the first pharyngeal arch and the muscles of facial expression arise from the fifth cranial arch.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. D

Question 3

A unilateral cleft lip is the lack of connective tissue migration between one maxillary process and the fused medial nasal processes. A bilateral cleft lip is the lack of connective tissue migration between both maxillary processes and the fused medial nasal processes.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. A

Question 4

The mandibular arch is divided into the maxillary and mandibular processes.

Accepted Answer

A) True 
 B)False

Question 5

The buccopharyngeal membrane is significant to head and neck anatomy because when it breaks down at about 10 weeks, the connection between the oral cavity and the digestive tract is established.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct. 
A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 6

The embryonic heart is seen as a bulge because it develops in an extremely anterior position.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct. 
A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 7

The trigeminal nerve innervates the first pharyngeal arch.

Accepted Answer

A) True 
 B)False

Question 8

Six pharyngeal arches can be seen in a 3-week-old embryo.

Accepted Answer

A) True 
 B)False

Question 9

The time span from fertilization through two weeks of gestation is referred to as the period of the ovum. The embryonic period of the fetus occurs from the third through the ninth week of gestation.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false.

Question 10

During formation of the upper lip, the lateral and medial nasal processes fuse.

Accepted Answer

A) True 
 B)False

Question 11

A cyst can form during the fusion of the palate. If the cyst develops along the fusion line of the two palatal shelves, it is known as a globulomaxillary cyst.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false; the second is true. 
D)  Both statements are false.

Question 12

A 3-week-old embryo is approximately 4 mm from the top of the head to the tail area. The buccopharyngeal membrane begins to develop at this time.

Accepted Answer

A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false. the second is true. 
D)  Both statements are false. 
A)  Both statements are true. 
B)  The first statement is true; the second is false. 
C)  The first statement is false. the second is true. 
D)  Both statements are false.

Question 13

In a pregnant woman, which of the following are known to increase risk for having a baby with a cleft lip or palate (select all that apply)?

Accepted Answer

A)  Smoking and other forms of tobacco use 
B)  Prescription medications 
C)  Environmental pollutants 
D)  Family history 
E)  Alcohol
F)Not of above 
A)  Smoking and other forms of tobacco use 
B)  Prescription medications 
C)  Environmental pollutants 
D)  Family history 
E)  Alcohol
F)Not of above

Question 14

Migration refers to

Accepted Answer

A)  Early tooth bud mesial drift 
B)  Deepening of the nasal pits 
C)  Increase in connective tissue of the upper lip 
D)  Fusion of the medial nasal process 
A)  Early tooth bud mesial drift 
B)  Deepening of the nasal pits 
C)  Increase in connective tissue of the upper lip 
D)  Fusion of the medial nasal process

Question 15

The stomodeum forms the oral cavity and the oral pharynx.

Accepted Answer

A) True 
 B)False

Question 16

Formation of a median palatine cyst occurs during migration of the palatal shelves because a few epithelial cells remain embedded in connective tissue and fail to fuse.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct. 
A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 17

By the end of the eleventh week the upper lip has formed because the two medial nasal processes have fused together.

Accepted Answer

A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct. 
A)  Both the statement and the reason are correct and related. 
B)  Both the statement and the reason are correct but are NOT related. 
C)  The statement is correct, but the reason is NOT correct. 
D)  The statement is NOT correct, but the reason is correct. 
E)  NEITHER the statement NOR the reason is correct.

Question 18

Each of the following is true of the buccopharyngeal membrane EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  The buccopharyngeal membrane is the point where the foregut and stomodeum share a common wall. 
B)  The buccopharyngeal membrane forms the descending and sigmoid colon. 
C)  This membrane is found near the future site of both the palatine tonsils and the posterior portion of the tongue. 
D)  The buccal pharyngeal membrane breaks down at about $4 {~~1 / 2}$ weeks. 
A)  The buccopharyngeal membrane is the point where the foregut and stomodeum share a common wall. 
B)  The buccopharyngeal membrane forms the descending and sigmoid colon. 
C)  This membrane is found near the future site of both the palatine tonsils and the posterior portion of the tongue. 
D)  The buccal pharyngeal membrane breaks down at about $4 {~~1 / 2}$ weeks.

Question 19

Which of the following are involved in formation of the tongue (select all that apply)?

Accepted Answer

A)  Lateral lingual swellings 
B)  Tuberculum impar 
C)  Fifth pharyngeal arch 
D)  Copula 
E)  Frontal prominence 
A)  Lateral lingual swellings 
B)  Tuberculum impar 
C)  Fifth pharyngeal arch 
D)  Copula 
E)  Frontal prominence

Question 20

The midgut forms all of the following EXCEPT one. Which one is the EXCEPTION?

Accepted Answer

A)  Small intestine 
B)  Cecum 
C)  Ascending colon 
D)  Sigmoid colon 
E)  Descending colon 
A)  Small intestine 
B)  Cecum 
C)  Ascending colon 
D)  Sigmoid colon 
E)  Descending colon

Exam 18: Development of Orofacial Complex

The foramen cecum is the point where the thyroid gland begins to develop. It is a small depression near the eustachian tube.

Both the muscles of mastication and the muscles of facial expression are innervated by the fifth cranial nerve. The muscles of mastication arise from the first pharyngeal arch and the muscles of facial expression arise from the fifth cranial arch.

A unilateral cleft lip is the lack of connective tissue migration between one maxillary process and the fused medial nasal processes. A bilateral cleft lip is the lack of connective tissue migration between both maxillary processes and the fused medial nasal processes.

The mandibular arch is divided into the maxillary and mandibular processes.

The buccopharyngeal membrane is significant to head and neck anatomy because when it breaks down at about 10 weeks, the connection between the oral cavity and the digestive tract is established.

The embryonic heart is seen as a bulge because it develops in an extremely anterior position.

The trigeminal nerve innervates the first pharyngeal arch.

Six pharyngeal arches can be seen in a 3-week-old embryo.

The time span from fertilization through two weeks of gestation is referred to as the period of the ovum. The embryonic period of the fetus occurs from the third through the ninth week of gestation.

During formation of the upper lip, the lateral and medial nasal processes fuse.

A cyst can form during the fusion of the palate. If the cyst develops along the fusion line of the two palatal shelves, it is known as a globulomaxillary cyst.

A 3-week-old embryo is approximately 4 mm from the top of the head to the tail area. The buccopharyngeal membrane begins to develop at this time.

In a pregnant woman, which of the following are known to increase risk for having a baby with a cleft lip or palate (select all that apply)?

Migration refers to

The stomodeum forms the oral cavity and the oral pharynx.

Formation of a median palatine cyst occurs during migration of the palatal shelves because a few epithelial cells remain embedded in connective tissue and fail to fuse.

By the end of the eleventh week the upper lip has formed because the two medial nasal processes have fused together.

Each of the following is true of the buccopharyngeal membrane EXCEPT one. Which one is the EXCEPTION?

Which of the following are involved in formation of the tongue (select all that apply)?

The midgut forms all of the following EXCEPT one. Which one is the EXCEPTION?

Oral Cavity

The Tooth: Functions and Terms

Fundamental and Preventive Curvatures

Dentition

Development, Form, and Eruption

Occlusion

Dental Anomalies

Supporting Structures

Clinical Considerations

Tooth Identification

Root Morphology

Incisors

Canines

Premolars

Molars

Deciduous Dentition

Basic Tissues

Dental Lamina and Enamel Organ

Enamel, Dentin, and Pulp

Root Formation and Attachment Apparatus

Eruption and Shedding of Teeth

Oral Mucous Membrane

The Tongue

Salivary Glands

Osteology of the Skull

Nose, Nasal Cavity, and Paranasal Sinuses

Muscles of Mastication, Hyoid Muscles, and Sternocleidomastoid and Trapezius Muscles

Temporomandibular Joint

Muscles of Facial Expression

Soft Palate and Pharynx

Arterial Supply and Venous Drainage

Salivary Glands

Nervous System

Lymphatics and Spread of Dental Infection

Filters