Lecture 6

Question 1

What does the mesobranchial area give rise to?

A) Tongue, epiglottis, and thyroid gland
B) Epiglottis, thyroid gland, and heart
C) Tongue, thyroid gland, and lungs
D) Epiglottis, lungs, and pancreas

Answer 1

A) Tongue, epiglottis and thyroid gland

Question 2

At what developmental week does the median tongue bud (tuberculum impar) form?

A) W.3
B) Late W.4
C) early W.5
D) W.6

Answer 2

B) Late W.4

Question 3

What structure separates the copula from the median tongue bud?

A) Thyroglossal duct
B) Laryngotracheal groove
C) Foramen cecum
D) Hypopharyngeal eminence

Answer 3

C) Foramen cecum

Question 4

The posterior 1/3 of the tongue arises from which structure?

A) Tuberculum impar
B) Median tongue bud
C) Hypopharyngeal eminence
D) Foramen cecum

Answer 4

C) Hypopharyngeal eminence

Question 5

During which week does the tongue grow rapidly in all directions?

A) W.4
B) W.5
C) W.6
D) W.7

Answer 5

C) W.6

Question 6

What structure marks the boundary between the anterior 2/3 and the posterior 1/3 of the tongue?

A) Hypopharyngeal eminence
B) Terminal sulcus
C) Thyroglossal duct
D) Laryngotracheal groove

Answer 6

B) Terminal Sulcus

Question 7

When does the tongue’s posterior 1/3 descend into the oropharynx?

A) At birth
B) Around 4 years of age
C) In W.4
D) At 2 months

Answer 7

B) Around 4 years of age

Question 8

Which muscles are first to differentiate during tongue development?

A) Intrinsic muscles
B) Hyoglossus and styloglossus
C) Genioglossus and hyoglossus
D) Palatoglossus and genioglossus

Answer 8

C) Genioglossus and Hyoglossus (extrinsic muscles)

Differentiation of tongue muscles beings in W7

Question 9

What nerve provides motor innervation to the tongue, excluding the palatoglossus muscle?

A) Facial nerve (CN VII)
B) Glossopharyngeal nerve (CN IX)
C) Trigeminal nerve (CN V)
D) Hypoglossal nerve (CN XII)

Answer 9

D) Hypoglossal nerve

Question 10

What nerve provides sensory innervation to the tongue?

A) Facial nerve (CN VII)
B) Glossopharyngeal nerve (CN IX)
C) Trigeminal nerve (CN V)
D) Hypoglossal nerve (CN XII)

Answer 10

C) Trigeminal nerve

Question 11

Sensory and taste innovation is achieved through

Answer 11

Glosspharyngeal nerve

Question 12

Which condition is caused by overdevelopment of the tongue?

A) Aglossia
B) Macroglossia
C) Microglossia
D) Ankyloglossia

Answer 12

B) Macroglossia

Question 13

What structure is responsible for the development of the thyroid gland?

A) Mesobranchial area
B) Foramen cecum
C) Copula
D) Thyroglossal duct

Answer 13

B) Foramen cecum

Question 14

At which week does the thyroid gland reach its final position?

A) W.4
B) W.6
C) W.7
D) M.3

Answer 14

C) W.7