KEY
Reading Assignment
Topic # 3025
ANIMAL REPRODUCTION
(Animal Science 8405 Instructional Materials Service)
Texas A&M University F.E. Box 2588 College Station, Texas 77843-2588
1. What is the sex hormone produced in the testes?
Testosterone
2. What is a sigmoid flexure, and where is it located in livestock species?
When the penis is in a relaxed state, the rear portion of the penis forms a S shape curve or
sigmoid flexure in certain livestock species. This curve allows for the retraction and
protection of the front portion of the penis.
3. What is the development of sperm cells called?
Spermatogenesis
4. What are the two female hormones?
Estrogen Progesterone
5. Name three parts of the male reproductive anatomy.
Rectum, Left bulbourethral gland, Prostate, Vesicular glands, Urinary bladder, Deferent
duct, Deep inguinal ring, Superficial inguinal ring , Free part of the penis, Preputial
cavity, Prepuce (sheath), Left crus of the penis, Bulbospongiosus muscle, Pelvic floor,
Retractor penis muscles, Sigmoid flexure of the penis, Body of penis, Paminiform plexus,
Epididymis, Cremaster muscle, Left testis, Tunica dartos, and Scrotum.
6. Name three parts of the female reproductive system.
Ovary, Infundibulum, Uterine horns, Uterus, Fallopian tube, Bladder, Cervix, Vulva,
Clitoris, Vagina, Urethra, Suburethral diverticulum, Body of uterus.
7. How many ovaries do females in poultry have?
One
8. The period of time from the beginning of one heat period to the next is called the
Estrous cycle
9. Fertilization is the union of sperm and the ovum and is the actual beginning of
pregnancy.
10. Sterility can be permanent or temporary may be caused for a number of reasons. A
particular disease or specific physical defect can halt or hinder reproduction.