Gametogenesis Flashcards

Flashcards on Gametogenesis

Gametogenesis

The formation of gametes (sperm, eggs).

Gametogenesis

The process by which a diploid (2n/2c) cell undergoes meiosis to form haploid (1n/1c) gametes.

Phase 1 of Gametogenesis

Primordial germ cells form in extraembryonic tissue and migrate to the gonad.

Phase 2 of Gametogenesis

Germ cell number increases by mitosis.

Phase 3 of Gametogenesis

Chromosome number is reduced by meiosis.

Phase 4 of Gametogenesis

Maturation of eggs and sperm.

Primordial germ cells

The cell lineage that becomes the gametes.

Genital ridge

Tissue where PGCs settle after migrating from the yolk sac.

GnRH (gonadotropin releasing hormone)

Hormone produced by the hypothalamus that instructs the pituitary to produce LH and FSH.

Leydig cells

Cells of the testis that respond to LH by producing testosterone.

Sertoli cells

Cells that respond to FSH (and also T) and initiate spermatogenesis

Spermiogenesis

Process of spermatids becoming mature sperm.

Spermiation

Final step that releases mature spermatozoa into the lumen.

Capacitation

The final step of sperm development that occurs within the female reproductive tract.