University:
Sam Houston State University
Course:
BIOL 2413 | General Zoology
Academic year:

2020
Views:

169

Pages:

11
Author:

Walker G

Question 1 • Trace the female reproductive tract. Name the organs involved as you follow the tract, starting outside the animal. Vulva, Vagina, Cervix, Body of Uterus, Uterine horns, Oviducts, and Ovaries Question 2 • When you’re doing A.I., the cervix is the most important part of the female. How can you tell for sure where the cervix begins and ends? The cervix tissue feels like a chicken or turkey neck. The vagina feels soft and elastic. The uterus is soft spongy like tissue. Question 3 • To achieve the highest fertility rate, where should you deposit semen? The body of the uterus. • By what other name is this area sometimes called? The inseminator’s “target”. Question 4 • Eggs are produced in the ovaries. Do both ovaries release eggs in each estrual cycle? No only one. Chance determines which one will produce the egg. Question 5 • What are two function of the follicle? To produce the egg by producing FSH, and to produce estrogen. Question 6 • Describe how the hormone estrogen affects females. Estrogen causes the female to become restless and to stand to be mounted by another animal. It also increases blood flow to the uterus and causes glands in the vagina and at the cervix to produce mucus. Question 7 • How frequently can you expect healthy, non-pregnant heifers and cows to come into heat? Approximately every 21 days. • How long does standing heat last? Between 6 and 30 hours with an average of 18 hours. Question 8 • What are two function of the yellow body? Replace the follicle, and secrete progesterone to prepare the uterus for pregnancy and prevent heat. Question 9 • Explain how progesterone affects the female? Progesterone helps to prepare the uterus for accepting the fertilized egg by reducing uterine muscle contractions and promoting development of the uterine lining. It also helps maintain pregnancy by preventing heat cycles. Question 10 • How soon after heat ends does ovulation , or egg release, occur? Between 10 and 14 hour, but it can range from 6 to 18 hours. Question 11 • After you’ve properly deposited semen, how long does it take sperm to reach the end of the oviduct where fertilization can occur? Approximately two and a half minutes. • Can sperm immediately fertilize the egg if it is available? No, it must mature in the oviduct first.