Ch 1 Basic Embryology Flashcards
1
Q
What is a blastocyst?
A
A hollow mass of cells(Trophoblast) with an embryoblast(mass of cells) on the inside.
2
Q
What is a primitive streak?
A
A groove formed in the top layer of the blastocyst.
3
Q
What is the Ectoderm?
A
The topmost layer of cells in the blastocyst.
Forms nervous or epithelial tissue and also makes epidermis.
4
Q
What is the Mesoderm?
A
The middle layer of cells in the blastocyst.
Forms muscle tissue, connective tissue, and epithelial tissue.
5
Q
What is the Endoderm?
A
The bottom layer of cells in the blastocyst.
Only produces epithelial tissue that forms linings of digestive and respiratory tracts.
6
Q
What is a zygote?
A
A fertilized egg.
