16 Embryology (Overview & Terminology)

Question 1

What are the 3 phases of embryology?

Answer 1

Pre-embryonic (week 1)
embryonic (week 2-8)
fetal (week 9 - birth)

Question 2

what are the key developments in the pre-embryonic phase?

Answer 2

fertilization
cleavage
blastocyst formation

Question 3

what are the key developments in the embryonic phase?

Answer 3

implantation
gastrulation
neuralation

Question 4

what is a zygote?

Answer 4

a new organism created by the fertilization of two gametes (sexual cells containing 23 chromosomes each)

Question 5

what are gametes?

Answer 5

sexual cells (sperm in males and ovum in females) that contain 23 chromosomes each