Neuro 6

Question 1

What will be elevated in Neural Tube defects? What other condition is associated with their elevation? What if they were depressed?

Answer 1

1) aFP and ACh
2) Abdominal Wall defects
3) Down’s Syndrome

Question 2

What are the structures of the branchial apparatus and their derivatives?

Answer 2

Cleft (ectoderm), Arch (mesoderm), and Pouch (endoderm)

CAP covers outside to inside

Question 3

What are the important structures that come from the 1st branchial cleft and pouches?

Answer 3

Structures of the ear

Question 4

What are the derivatives of the 1’st/2’nd/3’rd/4-6’th branchial arches?

Answer 4

1) M and T structures of the ear and jaw/CN-5
2) S structures of the ear and jaw/CN-7
3) “pharyngeal” suffix of the neck/CN-9
4) Circicothyroid and pharyngeal constrictors/speaking muscles/ CN-10

Question 5

What structures do the 3-4th branchial pouches form?

Answer 5

3) Inferior parathyroid and thymus

4) Superior parathyroid