Endodermal Derivatives

Question 1

Fate of Pharyngeal Pouches I

Answer 1

1. Eustachian Tube

2. External Auditory Canal

Question 2

Fate of Pharyngeal Pouches II

Answer 2

1. Palatine Tonsils

2. Thyroid

Question 3

Fate of Pharyngeal Pouches III

Answer 3

1. Paired Inferior Parathyroid Glands
2. Thymus
3. Thyroid

Question 4

Fate of Pharyngeal Pouches IV

Answer 4

1. Paired Superior Parathyroid Glands

2. Thymus

Question 5

Fate of Pharyngeal Pouches VI

Answer 5

Ultimobranchial Bodies

Question 6

Equivalent of Thyroid Diverticulum in Amphibian

Answer 6

Thyroid Bodies

Question 7

The ultimobranchial bodies fuse with the thyroid to form what structure?

Answer 7

Parafollicular Gland

Question 8

The thyroid is in between which pharyngeal pouches?

Answer 8

Pharyngeal Pouches II and III

Question 9

What morphogenetic movements lead to the formation of the Branchial Cleft/Groove?

Answer 9

1. Ectodermal Invagination

2. Endodermal Evagination

Question 10

Fate of Pharyngeal Arches I

Answer 10

1. Meckel’s Cartilage
2. Incus
3. Malleus

Question 11

Fate of Pharyngeal Arches II

Answer 11

1. Reichert’s Cartilage
2. Stapes
3. Styloid
4. Facial Muscles

Question 12

Fate of Pharyngeal Arches III

Answer 12

1. Gills
2. Hyoid Cartilage
3. Epiglottis

Question 13

Fate of Pharyngeal Arches IV

Answer 13

1. Gills
2. Larynx
3. Epiglottis

Question 14

What two structures compose the body of the tongue?

Answer 14

1. Lateral Lingual Swellings

2. Tuberculum Impar

Question 15

Another Name for the Root of the Tongue

Answer 15

Copula

Question 16

Extrahepatic Biliary Tree Precursor Cells Gene Expression Changes

Answer 16

1. Ceasing of Pdx-1 Expression

2. Continued Sox-17 Expression

Question 17

Ventral Pancreas Precursor Cells Gene Expression Changes

Answer 17

1. Ceasing of Sox-17 Expression

2. Continued Pdx-1 Expression

Question 18

When does bile production begin?

Answer 18

12 Weeks

Question 19

Dorsal Bud gives rise to which parts of the pancreas?

Answer 19

Head, Body, Tail

Question 20

Ventral Bud gives rise to which parts of the pancreas?

Answer 20

Distal Region of Head, Uncinated Process

Question 21

Fingerlike ectodermal evagination towards the floor of the diencephalon/infundibulum

Answer 21

Rathke’s Pouch

Question 22

At what week does the primitive stomach appear in humans?

Answer 22

Week 4

Question 23

Cavity of Greater Omentum

Answer 23

Omental Bursa

Question 24

At what week does umbilical herniation occur?

Answer 24

Week 8

Question 25

The cloaca is formed by joining the ______ and the ______.

Answer 25

1. Terminal End of Hindgut

2. Allantois

Question 26

These cells are unique to the intestines and produce lysozymes.

Answer 26

Paneth Cells

Question 27

Bud of endoderm that extends out from the foregut into the surrounding mesenchyme

Answer 27

Hepatic Diverticulum

Question 28

Population of Hepatic Diverticulum that Exclusively Forms Liver Cells

Answer 28

Lateral Group

Question 29

Population of Hepatic Diverticulum that Forms Several Midgut Regions

Answer 29

Ventral-medial Group