Anatomy Flashcards
Paired glands that provide for the development of the oocytes and for the production of hormones
ovaries
ovaries: Caudal to its _____ and suspended from the _________ through the ________
lateral kidney..?
dorsal abdominal wall
mesovarium (part of broad ligament)
Ovulation occurs throughout the surface but in mare
confined to the ovulation fossa
epithelium that covers the ovaries
tunica albuginea
Ovaries: cortex
contains a mass of follicles under different developmental stages,
Ovaries: medulla
centrally located and contains loose CT, blood vessels, lymphatics, and nerves
Ovarian follicles stages/types
- Primordial follicles
- Growing follicles
- Graafian follicles
contain single oocyte
surrounded by granulosa cells
Primordial follicles
begun growth from resting
stage but without an antrum, may have ZP
Growing follicles
with visible antrum, two
layers of thecal cells (theca interna and theca externa
Graafian follicles
Follicle regression:
occurs by birth and throughout reproductive life of female
regression (atresia)/ follicle regression
Follicle regression:
Some primordial follicles grow after birth but may not reach the _______ stage and
regress
Graafian stage
Follicle regression:
Graafian follicle formation begins at_____ and dependent on ______
Graafian follicle formation begins at puberty and is dependent on rising circulating levels of LH and FSH
Oogenesis:
The oogonia have all progressed to the primary oocyte stage after birth,
no new oocytes appear thereafter
Oogenesis part 1
Oogenesis:
Meiotic division of the primary oocyte produces a secondary oocyte and
up to four polar bodies, due to unequal distribution of the cytoplasm
oogenesis part 2
secondary oocyte produces ________ due to unequal distribution of the cytoplasm
polar bodies (up to 4)
Tubular genital tract
- Uterine tubes
- Uterus
- Vagina
conduct oocytes to uterus
Uterine tubes (convoluted tubes..?)