Exam 3 Flashcards
What are the six classes of nutrients?
- Water
- Carbohydrates
- Fat
- Protein
- Vitamin
- Minerals
Of the six major classes of nutrients, which is the majority of body mass?
Water, (25% of live body mass)
What are the three primary functions of the male in the reproductive process?
- Produce ample quantities of semen
- Find the receptive female
- Mount and Serve
Explain why reproduction is the trait of greatest economic importance.
Cost of open animals
What are the two main functions of the testes?
- Produce sperm cells to fertilize ova
2. Produce the hormone testosterone
What are the two main functions of the epididymis?
- concentration of spermatazoa
2. storage and maturation site
What are the two main functions of the scrotum?
- Provides support for testicles
2. temperature regulation for sperm livability
Why is scrotal circumference a widely used selection tool for reproductive management?
Good indicator of
- age at puberty (larger indicated early puberty)
- Overall fertility
What is the vas deferens?
transportation tube that carries sperm from the epididymis to the urethra
What is the primary function of the accessory sex glands?
- Produce fluids: add volume & nutrients
2. Prostate, bulbourethral and seminal vesicles
What is the function of the urethra?
large canal from urinary bladder extending the full length of the penis
What is the function of the penis?
Organ of copualtion
What are the primary functions of the female in the reproductive process?
1. Develop and release the egg (ovum) 2, permit mating (estra/standing heat) 3. conception 4. develop the embryo 5. nourish the fetus 6. parturition (birth) lactation (milk 7. production) 8. rebreeding
What is function of the ovaries?
produce the ova (sex cells or eggs)
What is function of the oviducts?
site of fertilization
transport of eggs to the uterus
What is function of the uterus?
Site of pregnancy
responsible for expulsion of the fetus
What is function of the vagina?
female organ
of copulation
and birth canal
What is the function of the cervix?
“gateway” between the uterus and the vagina
Define “standing heat”.
period when female is receptive to the male
Standing heat is also referred to as ______.
Estrus
What is the estrous cycle?
time period extending from ovulation to ovulation
What is the follicle, where is it found, and what hormone does it secrete?
fluid filled structure on the ovary
contains the egg
Secretes estrogen
What is the CL, where and when is it found, and what is the primary hormone it secretes?
structure that remains after follicle lyses yellowish body on the ovary secretes progesterone (supportive of pregnancy)
FSH stands for what?
Follicle Stimulating Hormone
