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AS-101 > Exam 3 > Flashcards

Exam 3 Flashcards

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1
Q

What are the six classes of nutrients?

A
  1. Water
  2. Carbohydrates
  3. Fat
  4. Protein
  5. Vitamin
  6. Minerals
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2
Q

Of the six major classes of nutrients, which is the majority of body mass?

A

Water, (25% of live body mass)

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3
Q

What are the three primary functions of the male in the reproductive process?

A
  1. Produce ample quantities of semen
  2. Find the receptive female
  3. Mount and Serve
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4
Q

Explain why reproduction is the trait of greatest economic importance.

A

Cost of open animals

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5
Q

What are the two main functions of the testes?

A
  1. Produce sperm cells to fertilize ova

2. Produce the hormone testosterone

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6
Q

What are the two main functions of the epididymis?

A
  1. concentration of spermatazoa

2. storage and maturation site

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7
Q

What are the two main functions of the scrotum?

A
  1. Provides support for testicles

2. temperature regulation for sperm livability

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8
Q

Why is scrotal circumference a widely used selection tool for reproductive management?

A

Good indicator of

  1. age at puberty (larger indicated early puberty)
  2. Overall fertility
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9
Q

What is the vas deferens?

A

transportation tube that carries sperm from the epididymis to the urethra

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10
Q

What is the primary function of the accessory sex glands?

A
  1. Produce fluids: add volume & nutrients

2. Prostate, bulbourethral and seminal vesicles

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11
Q

What is the function of the urethra?

A

large canal from urinary bladder extending the full length of the penis

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12
Q

What is the function of the penis?

A

Organ of copualtion

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13
Q

What are the primary functions of the female in the reproductive process?

A 
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
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14
Q

What is function of the ovaries?

A

produce the ova (sex cells or eggs)

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15
Q

What is function of the oviducts?

A

site of fertilization

transport of eggs to the uterus

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16
Q

What is function of the uterus?

A

Site of pregnancy

responsible for expulsion of the fetus

17
Q

What is function of the vagina?

A

female organ
of copulation
and birth canal

18
Q

What is the function of the cervix?

A

“gateway” between the uterus and the vagina

19
Q

Define “standing heat”.

A

period when female is receptive to the male

20
Q

Standing heat is also referred to as ______.

A

Estrus

21
Q

What is the estrous cycle?

A

time period extending from ovulation to ovulation

22
Q

What is the follicle, where is it found, and what hormone does it secrete?

A

fluid filled structure on the ovary
contains the egg
Secretes estrogen

23
Q

What is the CL, where and when is it found, and what is the primary hormone it secretes?

A 
structure that remains after follicle lyses 
 yellowish body on the ovary
secretes progesterone  (supportive of pregnancy)
24
Q

FSH stands for what?

A

Follicle Stimulating Hormone

25
Q

FSH in males is ____.

A

Stimulates testicular cells to nourish new sperm

26
Q

FSH in females is ______.

A

Stimulates follicular growth & development

Stimulates follicle to produce estrogen

27
Q

LH stands for ______.

A

Luteinizing Hormone

28
Q

LH in males ______.

A

Stimulates testicles to produce testosterone

29
Q

LH in females ________.

A

ovulation

Stimulates formation/function of corpus luteum

30
Q

What hormone is the “pregnancy hormone”?

A

Progesterone

31
Q

Prostaglandin causes what change in the CL, and ultimately causes what to happen?

A

Causes CL to regress, and in turn causes progesterone to decrease

32
Q

What are the three major types of digestive systems in livestock?

A
  1. Monogastric
  2. Monogastric with a functional cecum
  3. Ruminant
33
Q

Monogastric animals include _____.

A

Swine, poultry, dogs, cats, and humans.

34
Q

Monogastric animals include ______.

A

Horses, elephants, rabbits

35
Q

Ruminant animals include ________.

A

cattle, sheep, goats

AS-101 (7 decks)

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