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Breeding And Reproduction > Lecture 3 > Flashcards

Lecture 3 Flashcards

1
Q

Where does the testes develop

A

In the fetal abdomen and descend into the scrotum before birth

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2
Q

What is the shape of the testes

A

Similar shape and consistence: ovoid and firm

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3
Q

What is the name of the connective tissue capsul on the testes

A

Tunica albuginea

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4
Q

What is the septa

A

Extensions from the tunica albuginea into the testes. Divide the testis into lobules, support the seminiferous tubules

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5
Q

What are lobules

A

Contain the seminiferous tubules

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6
Q

What is function of the seminiferous tubules

A

Produce spermatozoa

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7
Q

What are Sertoli cells

A

Nurse function for developing spermatozoa

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8
Q

What are leydig cells

A

Interstitial cells with endocrine function

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9
Q

What is the scrotum

A

Cutaneous sac surrounding testes. Divided into 2 cavities by medium septum. Contains the testes, epididymis and distal portion of the sermatic cord

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10
Q

What is the vaginal tunic

A

Extension of the peritoneum called the tunica vaginalia. Covers the spermatic cord, epididymis and the testes

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11
Q

What are the three regions or the epididymis

A

The head, body and tail

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12
Q

What are the functions of the epididymis

A

Transports, feeds, stores and matures sperm as well as reabsorbs dead sperm

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13
Q

What does the spermatic cord contain

A

Testicular artery and vein, lymphatics , autonomic nerves, ductus deferens, cremaster muscle, tunica vaginalis

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14
Q

What is the vas deferens

A

Continuation of tail of epididymis. Goes into abdomen via inguinal rings, fuses with urethra just after the neck of the bladder

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15
Q

What is an ampulla

A

Enlarged area of a tube or canal that’s used for the storage of aperm

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16
Q

What are the 4 accessory sex glands

A

Prostate, bulbourethral glands, seminal vesicles, other glands

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17
Q

What is a prostrate and where is it found

A

Located at the base of the bladder. Adds it’s secretions to the sperm during ejaculation

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18
Q

Where is the bulbourethral gland and what does it do

A

Caudal to prostate, secretes mucus

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19
Q

What are the seminal vesicles used for

A

Add nutrition and buffers to sperm

20
Q

What are the other accessory sex glands

A

Coagulating glands,
Glands of the ductus deferens
Preputial glands

21
Q

What is the urethra and where is it located

A

Long tube from the urinary bladder to the glans penis. Serves both reproductive and urinary systems

22
Q

What are the two types of penis

A

Fibroelastic or vascular

23
Q

Describe a dogs penis

A

Has os penis and bulbus glands that form a bulb in the vagina

24
Q

Describe cat penis

A

Has penile spines

25
Q

Describe a ruminant penis

A

Has a sigmoid flexure and fibroelastic penis.

26
Q

Describe a pig penis

A

Anterior part of a penis that has a corkscrew shape

27
Q

Describe a goat penis

A

Has a urethral process in the shape of a hook

28
Q

Describe the prepuce

A

Forms a sheath around the glans penis

29
Q

What is paraphimosis

A

Cannot get it back in

30
Q

Phimosis

A

Cannot get it out

31
Q

Describe the inguinal canal

A

Spermatic cord leaves the testis and enters the abdominal cavity by the way of the inguinal canal. It is formed by the abdominal muscles

32
Q

What happens when you have weakened inguinal canal muscles

A

Hernias

33
Q

Describe temperature regulation

A

Achieved by the scrotum, the cremaster muscle, and the pampering plexus. Important for the development of sperm where the body temperature can be spermicidal

34
Q

What does the hypothalamus do

A

Produced GnRH to stimulate the pituitary to produce FSH and LH

35
Q

What does FSH do

A

Stimulate Sertoli cells and produce estrogen

36
Q

What is LH

A

Stimulates testosterone by leydig cells

37
Q

Describe crypt orchidism

A

Failure to descend can result in retention anywhere from its origin, into the inguinal canal, along the vaginal tunic. Can be bilateral or unilateral. Is genetically controlled

38
Q

Erection and profusion of penis

A

Occur as a result of sexual stimulation causing dilation of the arteries and stiffening of the penis.

39
Q

What is emission

A

Movement of spermatic fluid along the ductus deferens to the urethra

40
Q

What is ejaculation

A

The passage of Deneb along the penile urethra brought about by striated muscles

41
Q

What is the principal of artificial insemination

A

Collect the male, examine sperm, divide it into aliquots

42
Q

What are 6 advantages to AI

A

Genetic improvement
Control of venereal disease
Availability of accurate breeding records necessary for good herd management.
Economic
Safety through elimination of dangerous animals
Use for difficult females who don’t want to breed

43
Q

What are three methods to obtain semen

A

Electroejaculation
Dummies
Manual collection

44
Q

What are the 4 steps of ivf

A

Hormone treatment
Remove sperm
Remove eggs
Place in a test tube

45
Q

What are the advantages of embryo transfer

A

More progeny

46
Q

What is the function of the testis

A

Production of sperm and hormones

Breeding And Reproduction (3 decks)

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