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

Question 2

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  weeks.E) A) and B)
F) None of the above B

Question 3

Which ethnic group is most likely to have a combined cleft lip and palate?

Accepted Answer

A)   Caucasians
B)   Asians
C)   African Americans
D)   There is very little differentiation by ethnicity.E) A) and B)
F) A) and C)

Question 4

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.F) A) and B)
G) All of the above

Question 5

A globulomaxillary cyst results from improper fusion of the maxillary and mandibular processes.This cyst lies between the maxillary lateral incisor and canine.

Accepted Answer

A)   Both statements are true.
B)   The first statement is true;the second statement is false.
C)   The first statement is false;the second statement is true.
D)   Both statements are false.E) A) and B)
F) None of the above

Question 6

The first and second pharyngeal arches are the largest because they are formed earlier in the developmental process.

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.F) A) and B)
G) A) and C)

Question 7

Development of a cleft palate occurs between the 7th and the 11th week.If it occurs early,only the soft palate or uvula will be affected.

Accepted Answer

A)   Both statements are true.
B)   The first statement is true;the second statement is false.
C)   The first statement is false;the second statement is true.
D)   Both statements are false.E) None of the above
F) B) and C)

Question 8

If the thyroid gland does not form normally,a red lump known as a lateral lingual swelling develops.This abnormal formation is located on the floor of the mouth.

Accepted Answer

A)   Both statements are true.
B)   The first statement is true;the second statement is false.
C)   The first statement is false;the second statement is true.
D)   Both statements are false.E) C) and D)
F) None of the above

Question 9

Both muscles of mastication and muscles of facial expression are innervated by the fifth cranial nerve.Muscles of mastication arise from the first pharyngeal arch and 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 statement is false.
C)   The first statement is false;the second statement is true.
D)   Both statements are false.E) A) and B)
F) C) and D)

Question 10

The thyroid gland originates from

Accepted Answer

A)   the foramen cecum
B)   the anterior two-thirds of the tongue
C)   the posterior third of the tongue
D)   the midline of the inner surface of the pharyngeal arches
E)   all of the aboveF) B) and E)
G) B) and C)

Question 11

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

Question 12

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 colonF) B) and E)
G) C) and E)

Question 13

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.F) C) and E)
G) All of the above D

Question 14

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

Question 15

The hyoid arch is pharyngeal arch number

Accepted Answer

A)   I.
B)   II.
C)   III.
D)   IV.E) A) and B)
F) C) and D)

Question 16

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 statement is false.
C)   The first statement is false;the second statement is true.
D)   Both statements are false.E) A) and B)
F) All of the above A

Question 17

The hyoid bone arises from the second and third pharyngeal arches.

Accepted Answer

A) True 
 B)False

Question 18

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)   AlcoholF) A) and D)
G) A) and C)

Question 19

Rathke's pouch forms the posterior part of the pituitary gland.

Accepted Answer

A) True 
 B)False

Question 20

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.F) C) and E)
G) A) and E)

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedB

Which ethnic group is most likely to have a combined cleft lip and palate?

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

A globulomaxillary cyst results from improper fusion of the maxillary and mandibular processes.This cyst lies between the maxillary lateral incisor and canine.

Correct AnswerverifiedShow Answer

The first and second pharyngeal arches are the largest because they are formed earlier in the developmental process.

Correct AnswerverifiedShow Answer

Development of a cleft palate occurs between the 7th and the 11th week.If it occurs early,only the soft palate or uvula will be affected.

Correct AnswerverifiedShow Answer

If the thyroid gland does not form normally,a red lump known as a lateral lingual swelling develops.This abnormal formation is located on the floor of the mouth.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

The thyroid gland originates from

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedD

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.

Correct AnswerverifiedShow Answer

The hyoid arch is pharyngeal arch number

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedA

The hyoid bone arises from the second and third pharyngeal arches.

Correct AnswerverifiedShow Answer

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. ) ?

Correct AnswerverifiedShow Answer

Rathke's pouch forms the posterior part of the pituitary gland.

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

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D

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A

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