Human Gametes

Acrosome

- An organelle covering the head of the sperm - Contains enzymes that digest the egg cell coating and break into the egg

Oogonia

- Diploid

Zygote

- Diploid - 1 egg and 1 sperm - Fertilization - Fraternal twins - Identical twins

Primary Oocyte

- Diploid - At birth; 1-2 million follicles - Stopped in prophase - 1 cell per month completes meiosis after menarche- metaphase off center

Spermatogonia

- Germ line cells in the testes - Diploid - Mitosis

Secondary Oocyte/ Polar Body

- Haploid - Complete meiosis 2 if fertilized - Metaphase plate off center

Ovum/ Polar Bodies

- Haploid - Part of ova

Spermatids

- Haploid - Sperm part

Sperm

- Human gamete - 200-300 million per day

Primary Spermatocytes

- Meiosis 1 - Diploid

Secondary Spermatocytes

- Meiosis 2 - Haploid

Sperm Parts

- Nucleus - Acrosome - Mitochondria - Flagellum

Menopause

- Permanent stopping of menstruation

Ovulation

- Release from follicle - 400 ovulations

Ova

- eggs