Gestation and Birth Process

Question 0

What is a Morula?

Answer 0

-A solid mass of cells that forms the cleavage

Question 1

How many weeks does it take to form an Embryo?

Answer 1

-8 weeks

Question 2

What is a Blastula?

Answer 2

-A hollow sphere of cells known as the blastocoel

Question 3

What is a Gastrula?

Answer 3

-Three layered Embryo

Question 4

What are the three layers of a Gastrula?

Answer 4

• Ectoderm
• Endoderm
• Mesoderm

Question 5

What is the Ectoderm?

Answer 5

-The outermost layer of a Gastrula

Question 6

What is the Endoderm?

Answer 6

-The innermost layer of a Gastrula

Question 7

What is the Mesoderm?

Answer 7

-The middle layer of a Gastrula

Question 8

What is Embryonic Induction?

Answer 8

-It brings about Cell Differentiation

Question 9

What is Cell Differentiation?

Answer 9

-Specific cells of the Embryonic layers differentiate into Specific tissues

Question 10

What is a Fetus?

Answer 10

-All the organs of the young have been formed (8 - 40 weeks)

Question 11

What is the order of the birth process?

Answer 11

1. Fertilization
2. Zygote
3. Morula
4. Blastula
5. Implantation to the Uterus
6. Gastrula
7. Fetus
8. Labor

Question 12

What is Labor?

Answer 12

-Series of contractions of the uterus caused by the hormones oxytocin and prostaglandins [First 2 days of Breast feeding is important for the baby]

Question 13

What is Spermatogenesis?

Answer 13

-Formation of Sperm cells

Question 14

What is Oogenesis?

Answer 14

-Formation of Egg cells

Question 15

What happens during Fertilization?

Answer 15

-300 million sperm enter but only one fertilizes the egg

Question 16

What is a Zygote?

Answer 16

-Formed from the union of 2 gametes during sexual reproduction

Question 17

What is an Embryo?

Answer 17

• Multicellular Diploid Eukaryote

- Result of Mitosis of Zygote