Embryology

Question 1

Stages of Organ Development

Answer 1

1) Cytogenesis
2) Histogenesis
3) Organogenesis

Question 2

Layers Of Embryo

Answer 2

Ectoderm- outer layer
Mesoderm- middle layer
Endoderm- inner layer

Question 3

Ectoderm consists of..

Answer 3

Brain
Spinal cord
Spine
Spinal Nerves

Question 4

Mesoderm consists of..

Answer 4

Heart
Early circulatory system
Muscles
Kidneys
Reproductive system

Question 5

Endoderm consists of..

Answer 5

Lungs
Intestines
Urinary bladder

Question 6

First system to function in embryo..

Answer 6

Cardiovascular System

Question 7

Heart beat starts at ____ embryonic age and ____ gestational age

Answer 7

22 days

36 days

Question 8

Connection of embryo and yolk sac that developed SMA, IMA, CA

Answer 8

Vitelline artery complex

Question 9

Fetal hindgut will..

Answer 9

Be herniated out and rotated 270 degrees.
Returning around 14 weeks gestational age

Question 10

Cytogenesis is the …

Answer 10

Development of cells

Question 11

Histogenesis is the formation of..

Answer 11

Cells to tissues

Question 12

Organogenesis is the formation of..

Answer 12

tissues into organs

Question 13

Embryo is classified as a fetus..

Answer 13

9 weeks post-conception (embryological age)

Question 14

Postnatally the umbilical vein becomes the..

Answer 14

Ligamentum teres

Question 15

Postnatally the ductus Venosus becomes the..

Answer 15

Ligamentum venosus