Blastocyst And Its Lineages

Question 0

What is the outer cell mass called?

Answer 0

Trophoblast

Question 1

What is the first cell fate decision?

Answer 1

ICM OR OCM

Question 2

What cells come from the trophoblast?

Answer 2

Trophoblast stem cells

Question 3

What cells come from the hypoblast?

Answer 3

XEN cells

Question 4

What cells come from the epiblast?

Answer 4

Embryonic stem cells

Question 5

What germ layer gives rise to brain, skin, nails, eyes and hair?

Answer 5

Ectoderm

Question 6

What germ layer gives rise to muscles, bone, heart, vasculature, kidneys?

Answer 6

Mesoderm

Question 7

What germ layer gives rise to the gut, lungs, liver, pancreas and bladder?

Answer 7

Endoderm

Question 8

What are the 2 Cardinal properties of a stem cell?

Answer 8

1. The ability to self renew (immortal)

2. The ability to differentiate into multiple cell types

Question 9

What cells are important for organizing the early embryo and appear shiny, round and ciliated?

Answer 9

XEN cells

Question 10

What cells have huge nuclei with gaps around them?

Answer 10

TS cells

Question 11

What cells are responsible for giving rise to the entire embryo?

Answer 11

Embryonic stem cells

Question 12

What name is given to the process in which one X chromosome is inactivated?

Answer 12

Imprinting

Question 13

What gene costs chromosomes for inactivation?

Answer 13

Xist

Question 14

In what cell type is the imprinting random?

Answer 14

ES cells

Question 15

In what cell types is the paternal X chromosome ALWAYS inactivated?

Answer 15

TS cells and XEN cells