Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Swine Production Exam 2 > Reproductive Anatomy and Estrus > Flashcards

Reproductive Anatomy and Estrus Flashcards

1
Q

Major male functions

A
  • Produces sperm
  • Introduces sperm into female repro trac
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Testes

A

Production of sperm and testosterone

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

List the protecting and supporting structures:

A
  • Scrotum
  • Cremaster and tunica dartos muscles
  • Spermatic chord
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Secondary sex organs

A

Ducts that carry sperm out of testes and body

  • Epididymis
  • Vas deferens
  • Urethra
  • Penis
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Accessory sex glands (3)

-Add fluid to semen

A
  • Bulbourethral glands
  • Seminal vesicles
  • Prostate gland
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Seminal vesicles:

A

Secrete fluid, energy substrates and buffers (prevent death in female repro tract)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Bulbourethral glands

A

Produce gel - forms a plug in female repro tract

1.5in in diameter

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Prostate gland

A

Hot dog bun around urethra

  • Fluid + salts to semen
  • Provides most of the medium for transport
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Rete testis

A

Collecting ducts for sperm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Spermatogenesis

A

FSH stimulates sperm production

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Seminiferous tubule

A

Sperm formation

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Cauda epididymis

A

Warehouse for sperm

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Sperm maturation is approx. ___ days.

A

35

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

When penis is not stimulated,

A
  • Retractor penis muscle is contracted and forms “s” shape
  • long penis inside body
  • prevents extension out of prepuce
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

When penis is stimulated,

A
  • Retractor penis muscle is relaxed and “s” bend unfolds and penis extends
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Fibroelastic penis

A
  • During ejaculation, the penis twists and the free end forms a corkscrew shape
  • Matches pattern of cervix
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Boars ejaculate ________ml in volume.

A

150-250ml

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Boars have a unique ______

A

Preputial pouch or diverticulum

*Accumulates urine and sloughed cells

*Odor

19
Q

Ovaries

A
  • Production of ova and hormones
  • Estrogen
  • Progesterone
  • Relaxin
  • Inhibin
  • Activin
20
Q

Gilts reach maturity at ______ months of age.

A

5-7

21
Q

Oviduct

A
  • Infundibulum —> catches follicles
  • Ampulla
  • Isthmus: ampulla isthmus junction = fertilization
22
Q

Uterus

A
  • Bicornate
  • Horns: 4-5 feet long (site of implantation)
  • Body: 2 inches
23
Q

Cervix

A
  • Site of semen deposition
  • Prevents microbial contamination of uterus
  • Vagina: vestibule to the tract
24
Q

Estrous cycle

A

21 day cycle

25
Q

Estrus “heat”

A

18–24 hours

*Older sows remain in heat longer than gilts

26
Q

As estrus approaches ______ follicles form on each ovary.

A

6-10

27
Q

The onset of estrus occurs…

A

Gradually

28
Q

7 Signs of estrus

A

Gilts and sows generally exhibit clear signs:

  • Standing heat: gilts and sows will stand immobile when pressure is placed on their back if in estrus
    • This can be standing for a boar to mount
    • Or standing for “back pressure test”
  • Red, swollen vulva, increased vaginal mucous
  • Increased nervous activity (pacing, biting at bars)
  • Desire to seek boar
  • Loss of appetite
  • Male-like behavior
  • Change in vocalization
29
Q

Boar + Back Pressure Stimulation, what % of estrus sows standing?

A

97%

30
Q

Boar (hidden) + Back Pressure Stimulation, what % of estrus sows standing?

A

90%

31
Q

No Boar + Back Pressure Stimulation, what % of estrus sows standing?

A

48%

32
Q

Boar “courting sounds” + Back Pressure Stimulation, what % of estrus sows standing?

A

75%

33
Q

Caput

A

Sperm become fertile

34
Q

corpus

A

Storage of sperm

35
Q

collected semen is evaluated for…

A

volume

concerntration

morality

morphology

36
Q

feeding boars for reproductive success (4)

A
  • minimize mature body weight
  • low protien levels and overfeeding can significatly reduce libdo
  • over - condition reduces the ability to mount
  • 14% crude protein
37
Q

Zinc in boars

A

testicular function and growth

38
Q

vitamin E and Selenium

A

Sperm concentration and fertility

39
Q

Vitamin C in boars

A

aids in offsetting the adverse affects of heat and stress (over 88 degrees)

40
Q

omega 3- fatty acids in boars

A

improves semen characterisitics

41
Q

epididymis

A

transport sperm from the seminiferous touble to the vas deferens

42
Q

vas deferens

A

transport sperm from epididymis to urethra

43
Q

urethra

A

transports sperm (+urine) out of the body

Swine Production Exam 2 (6 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions