University:
Sam Houston State University
Course:
BIOL 1406 | General Biology I
Academic year:

2020
Views:

409

Pages:

13
Author:

Clint W.

The Female Reproductive System Objective: Identify the parts of the female reproductive system of livestock Female Tract Female Reproductive System • Ovary - the ovary is comparable to the male testicle and is the site of gamete production. – A bovine animal has 20,000 potential eggs per ovary, while a human female has 400,000 potential eggs per ovary. – Ova are fully developed at puberty and are not continuously produced as in the male. – All species contain two functional ovaries except for the hen which has only a left functioning ovary. Female Reproductive System Female Reproductive System The ovaries have three major functions: • • Gamete production Secrete estrogen (hormone) • • • • • • absence of muscle development development of mammary glands development of reproductive systems and external genitalia fat deposition on hips and stomach (source of energy) triggering of heat Form the corpus luteum Female Reproductive System • Infundibulum - the funnel shaped portion of the fallopian tube near the ovary that catches the ovulated egg. • Fallopian Tubes (or Oviducts) - pair of small tubes leading from the ovaries to the horns of the uterus (5 - 6 inches). – Fertilization occurs in the oviduct. – Egg travels from ovary to uterine horn in 3 - 4 days. Female Reproductive System Female Reproductive System • Uterine Horn - The anterior, divided end of the uterus in the cow, ewe, and mare. Sow has only 2 horns, no body, woman has no horns, only body. Female Reproductive System Female Reproductive System Uterus - Muscular sac connecting fallopian tubes and cervix 1. Sustains the sperm and aids in its transport 2. Supports embryo and fetus during gestation 3. Expels fetus at parturition Female Reproductive System • Cervix – Area between the uterus and vagina – Normally closed – Opens at estrus and parturition – (2 -3 inches) Female Reproductive System • Vagina - the female organ of copulation 1. admits penis 2. receives semen (except in sow) 3. passageway for fetus at parturition • Bladder - storage organ for urine • Vulva - extended genitalia; opening for both urinary and genital tracts Female Reproductive System