Reproduction Anatomy: Female Flashcards
How are sow uteri different than cow?
- They have same length broad ligament, but uterine horns are significantly longer in sow than cow (produce larger litters)
- Sows have smaller ovaries and a corkscrew cervix
What is special about the mare uterus?
- They have a very strong broad ligament of the uterus
- Have a large uterine body
What is unique about the dog uterus?
- Has long uterine horns
- Small uterine body
- Fat is present around ovaries (makes ovaries hard to find)
How can you follow dog cycles?
- Vaginal swab of cranial vagina
- The tissue gets bigger and cells proliferates –> makes a “pillow” against male’s os penis
- If top layer is dead/ cornified cells, then she’s in heat
What is the progression of follicles in the ovary?
- primary follicle –> secondary follicle –> tertiary follicle –> antral follicle –> oocyte released –> corpus luteum forms
What type of cells of the primary follicle surrounded by?
Cuboidal cells
How many layers of cells cover the secondary follicle?
- 2 or more cell layers
- Zona pellucida surround the follicle
T/F
Developing antral/ tertiary follicle are not palpable
False
They are palpable
What hormone is produced by the antral follicle?
Estrogen (E2)
What hormone is produced by the corpus luteum? What hormone lyses the corpus luteum?
- CL produces progesterone
- PGF alpha lyses CL, produced by uterus
- *degenerating CL is called corpus albicans**
What is the function of the infundibulum
- Catches egg
- Fimbriae allow egg to move from ovary during ovulation, which is then passed from the ostium to the ampulla
What is the ampulla and what is its function
- Thick part of oviduct (over half of it)
- Smaller surface area between infundibulum and ampulla
What is the function of the oviduct
Makes a suitable environment for egg, sperm, and future zygot
Where does fertilization occur?
ampular-isthmus junction
