Gametogenesis Flashcards

Flashcards about Gametogenesis

Gametogenesis

Formation of gametes.

Gametes

Develop in the gonads (sex cells).

Spermatogenesis

In males, formation of sperm.

Oogenesis

In females, formation of ova.

Spermatogenesis

Process by which spermatogonia differentiate into spermatozoa.

Spermatogenesis

Begins at puberty.

Spermatozoa

Formed in the wall of seminiferous tubules of the testes.

Sertoli cells

Provide support and nutrition to germ cells.

Luteinising hormone (LH)

Regulates Sertoli cells; binds to Leydig cells to stimulate testosterone production.

Spermiogenesis

The process of transformation of a circular spermatid to a spermatozoon.

Spermatozoon

An actively motile, free-swimming cell.

Spermatozoon

Consists of a head, neck, and a tail (flagellum).

Acrosomal cap

The anterior 2/3rd of the sperm nucleus is covered by this.

Oogenesis

Occurs in the ovaries and in the oviducts.

Oogenesis

Starts before birth.

Ovaries

Consists of cortex & medulla.

Oogonia

Present in the cortex of the ovary.

Oogonia

Are produced at a very early stage (before birth) and do not multiply thereafter.

Polar body

A nonfunctional product of meiotic divisions in oogenesis that gets broken down.

Gamete

Egg or sperm.

Spermiogenesis

Differentiation of sperm morphology.

Follicle

Where eggs mature in the ovary.

Ovulation

Release of egg from follicle.

Zygote

Fertilized egg.