Male Reproductive Tract Flashcards Preview

CTC Junior Vet science > Male Reproductive Tract > Flashcards

Flashcards in Male Reproductive Tract Deck (48)
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1
Q

Testicles

A

Produce sperm cells that fertilize the female’s egg

Lie externally to the abdomen

2
Q

Testosterone

A

Hormone that makes the appearance and behavior of a male masculine and testosterone

3
Q

Epididymis

A

Where sperm are stored from the testicle to mature

4
Q

Scrotum

A

A sac that contains and protects the testicles, regulated the temperature
Can retreat towards the body when warmth is needed and can descend when cooling is needed

5
Q

Vas Deferens

A

Transports sperm from the epididymis to the urethra

6
Q

Urethra

A

Large muscular canal extending from the urinary bladder. Through this urine and semen are excreted

7
Q

Accessory Sex Glands

A

Seminal vesicles, prostrate, and bulbouerthral gland

Primarily add to the sperm fluid to provide health and nutrition to sperm

8
Q

Penis

A

Organ of copulation. Characterized by spongy, erectile tissue. Provides passageway for semen and urine

9
Q

Seminiferous tubes

A

Found inside the testes and the site of sperm production

10
Q

The vas deferens takes the sperm where?

A

To the prostate gland where accessory secretions are added to the sperm

11
Q

Sperm cells contain

A

Flagella for movement
Mitochondria for energy
DNA for fertilization

12
Q

Pituitary gland helps to control function of

A

Testes

13
Q

Luteinizing Hormone (in males)

A

Stimulates the production of testosterone

14
Q

Follicle Stimulating Hormone (in males)

A

Facilitates sperm production

15
Q

Fibroelastic Penis

A

Uses sigmoid flexure and retractor muscle to become erect

16
Q

Vascular Penis

A

Will fill up with blood to become erect (humans and horses)

17
Q

Thermoregulation

A

Regulation of temperature of testes to support fertile sperm production

18
Q

Cryptochidism

A

When one or neither testes descend into the scrotum during fetal stages

19
Q

Convoluted

A

Contains many veins

20
Q

Vasectomy

A

Procedure to sterilize a male

21
Q

Spermatogenesis

A

Formation and growth of sperm

22
Q

Testosterone

Origin and function

A

Origin: Leydig cells found in the testes
Promotes: spermatogenesis and secondary sex characteristics

23
Q

Tunica Dartos Muscle

Origin and function

A

Origin: Scrotum
Functions: Suspend testes in scrotum and provide heat/cooling system

24
Q

The 3 Parts of the Spermatic Cord

A
  1. Ductus Deferens
  2. Pampiniform Plexus
  3. Cremaster Muscle
25
Q

Ductus(/Vas) Deferens Function

A

Move fertile sperm from the tail of the epididymis to penis

26
Q

Pampiniform Plexus Function

A

Composed of testicular artery and veins to cool blood before scrotum

27
Q

Cremaster Muscle

A

Supports testes, pull up testes during fight/flight (short period of time)

28
Q

Gubernaculum Function

A

Pulls testes through inguinal ring into the scrotum

29
Q

Inguinal ring

A

Opening between the body and scrotum

30
Q

Unlilateral Cryptorchidism

A

Only 1 testis descends into the scrotum

31
Q

Bilateral Cryptorchidism

A

Both testes don’t descend into the scrotum

32
Q

3 functions of the Epididymis

A

Sperm transport
Sperm maturation
Sperm storage

33
Q

Head of Epididymis (caput)

State of sperm

A

Entry point of Epididymis for sperm

sperm are not motile or fertile

34
Q

Body of the epididymis (corpus)

State of sperm

A

Maturation occurs here

Sperm some what motile and fertile

35
Q

Tail of the Epididymis (cavada)

State of sperm

A

Sperm is stored here (5-10 ejaculations)
sperm are motile and fertile
sperm can bind to an egg

36
Q

The 2 parts of the fibroelastic penis

A

Sigmoid flexure

retractor penis muscle

37
Q

Sigmoid flexure

A

‘S’ shaped curve that holds the penis within the body when not erected or helps with erection

38
Q

3 Sterilization Techniques

A

Castration
Vasectomy
Shortening of the spermatic cord

39
Q

Castration

A

Removal of the testicles, no sexual acts

40
Q

Vasectomy

A

Cutting to sever the Ductus Deferens

41
Q

Shortening of the spermatic cord effect

A

Raises the testicles closer to the body - makes the sperm too close to the body and too hot - making them infertile

42
Q

Thermoregulation is important because

A

Sperm will die if too hot, too cold, or comes into contact with blood

43
Q

Thermoreceptor function

A

Sends messages to the brain if too hot/cold

44
Q

Sweat gland function in male reproduction

A

located on the scrotum and will allow for cooling

45
Q

Tunica Dartos Muscle function

A

Expand when too hot (testes away from body)

Pull up when too cold (testes to the body)

46
Q

Leydig cell

Function and location

A

Function : produce testosterone

Location : outside the seminiferous tubules

47
Q

Sertoil cell

Function and location

A

Function : Protect and aid in growing sperm

Location : Inside seminiferous tubules

48
Q

Steps of sperm transport

A
1 - Seminiferous tubules 
2 - Epididymis 
3 - Vas deferens 
4 - Penis 
5 - Into female tract

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