New Terms Exam 2 Flashcards
Ovaries - Endocrine
Produce endrogens, estrogens, and progestogens
Estrogens
promote the growth and maturation of internal and external sex organs; development of the secondary female sex characteristics; promote breast development.
Progestogens
prepare internal sex organs (primarily uterus) for pregnancy by promoting changes in endometrium; prepare mammary glands for lactation.
Exocrine ovaries
xocrine function, as the ovaries produce the female gamete (i.e. ovum); gametogenesis; specifically the ovaries produce and ovulate a secondary oocyte.
Primary Oocyte
Arrested in prophase - surrounded by follicular cells, forming primordial follicle.
Embryo oocyte dev.
Primordial germ cells - Oogonia – primary occyte during embryology
atresia,
However, beginning at the fifth month of fetal life and throughout the woman’s lifetime, primary oocytes undergo a slow degenerative processes called atresia, defined as spontaneous death and subsequent reabsorption.
• Three basic types of ovarian follicles:
- Primordial follicles
- Growing follicles
a. Primary follicles
1) Early or Unilaminar primary follicles
2) Late or Multilayered or Multilaminar primary follicles
b. Secondary (Antral) follicles - Mature or Graafian follicles - ovulate secondary oocytes
Ecentric
Off-center nucleus
Theca Interna
cuboidal secretory cells; in response to LH, these cells synthesize and secrete androgens (i.e. precursors of estrogen); endocrine function; also fibroblasts, collagen bundles, and lots of blood vessels.
• Theca folliculi (follicular theca)
is the sheath of connective tissue cells that develop from the stromal cells surrounding the developing follicle.
Theca Externa
heca externa – fibrous outer portion; smooth muscle cells, fibroblast, and bundles of collagen.
Corpus Luteum
Granulosa and theca interna cells after ovulation. These undergo hypertrophy and produce progesterone. Cells of theca interna only increase slightly in size. Thecaleutin cells still produce estrogens.
Corpus Albicans
Primarily collagen.
Uterus layers
Perimetrium, myometrium, endometrium