Oogenesis, folliculogenesis, and some extra stuff

Stages of egg development

1. Oogonia

2. Primordial follicles

3. Primary follicles

4. secondary follicles

5. Antral (tertiary follicles)

6. Mature follicle

What do the primordial follicles have in terms of oocyte?

Primary Oocyte

What stage is the primary oocyte paused at?

Prophase 1 of meiosis , until puberty

Which oocyte is suspened in Metaphase 2

Secondary oocyte

The primordial germ cells that sperm develop from

spermatagonia

What does spermatogonia divide into

• Spermatogonia

• Primary spermatocyte

Primary spermatocyte

diploid cells that undergo meiosis

two cells produced from meiosis 1

secondary spermatocytes

How does the spermatid form?

When the secondary spermatocytes complete meiosis 2

Other functions of placenta besides the hormones

• Exchanges nutrients

• Exchanges waste

• transmits antibodies for the fetus

What does relaxin do?

Promotes blood growth in uterus

What other hormone does the placenta produces besides Estrogen and progesterone

CRH or corticotropin releasing hormone

Why is colostrum important?

It has immunoglobulins and it facilitates the baby’s first bowel movements

Why is breast milk important

it has essential fatty acids, enzymes for digestion, and immunoglobulins

Wat other reasons is breast milk important

It is easier to digest and it is the optimal source of nutrition