lecture 36: Male Repro Flashcards

1
Q

what is this zebra showing

A

Flehmen response (equine)

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2
Q

what is this moose showing

A

Flehmen response (ruminant)

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3
Q
A
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4
Q

Identify the following:
IcM –
RPM –
SP –
T –

A

IcM – cavernosus muscle
RPM – retractor penile muscle
SP – penile shaft
T – testis

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5
Q

Identify the following:
A –
BP –
CM –
DD –
GP –

A

A – ampulla
BP – prostate gland
CM – cremaster muscle
DO – ductus deferens
GP – glans penis

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6
Q

identify the following
UB –
UM –
VG -

A

UB – Urinary bladder
UM – urethra
VG - Seminal Vesicle gland

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7
Q
A
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8
Q
A
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9
Q
A
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10
Q
A
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11
Q

Male sex cells are produced by the __________

A

testicles

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12
Q

where are the male sex cells contained (in some mammals)

A

contained in scrotum

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13
Q

why is the scrotum important for the male sex cells (sperm)

A

its an external sac that holds the testicles outside the body to keep sperm 4-5 degrees COOLER than body temp

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14
Q

the primary male organ of repoduction

A

testicles

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15
Q

what are the 2 main jobs of the testicles

A

make sperm
secrete testosterone

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16
Q

of these 3 species, which has the LONGEST sperm relative to body weight

A

house mouse

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17
Q

what are the 2 important tubes transferring sperm cells

A

*ductus deferens
*urethra

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18
Q
A

ductus deferns

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19
Q

slender tube from epididymus to urethra which moves sperm to the urethra at ejaculation

A

ductus deferens

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20
Q

long tube from bladder to penis; passageway for urine and sperm out of the body

A

urethra

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21
Q

Ungulate(hooved) penis types:
what species has the musculocavernous type

A

equine

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22
Q

Ungulate penis types:
what species has the fibroelastic type

A

bovine
caprine
ovine

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23
Q

male organ of copulation which conveys semen and urine out of body

A

penis

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24
Q

allows extension and retraction of the penis; sigmoid flexure extends in copulation

A

penis retractor muscle

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25
Q
A
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26
Q

common site for urethral calculi

A
  • Sigmoid flexure
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27
Q

what must relax to expose the penis for examination or treatment

A

Retractor penis muscle

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28
Q
A

1- Sigmoid flexure
2- Retractor penis muscle
3- Preputial skin

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29
Q

Identify A,B,C,D

A
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30
Q
A

a persistent frenulum that should have broken down naturally around the time of birth

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31
Q

this is a urethral process of what animal

A

urethral process of the bull

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32
Q

this is a urethral process of what animal

A

urethral process of the ram (ovine)

33
Q

should an animal with a persistent frenulum be bred?

A

If necessary either of these can be removed surgically, but an animal with a persistent frenulum should not be used for breeding purposes.

34
Q

Descent of the Testicles:
Fetal development begins within the ________caudal to the_______

A

abdomen
kidneys

35
Q

Descent of the Testicles:
The testicles are located ______ between the peritoneum and the body wall.

A

retroperitoneally

36
Q

Descent of the Testicles:
Initially the ________ passes ventrally through the inguinal canal into the scrotum. It is followed by the ___________

A

gubernaculum
testicle and epididymis

37
Q

Descent of the Testicles:
As the testicle moves through the inguinal canal it picks up the ________ and the fascial layers of the inner and outer _______ wall

A

parietal peritoneum
abdominal

38
Q

As the testicle moves through the inguinal canal it picks up the parietal peritoneum and the fascial layers of the inner and outer abdominal wall.

These become the _________once outside of the abdomen.

A

vaginal tunic

39
Q

an opening in the caudal part of the abdominal wall that is a potential space between the flesh of the
internal abdominal oblique and the aponeurosis of
the external abdominal oblique

A

Inguinal Canal

40
Q

The deep inguinal ring is found at the free edge of
the ____________

A

internal abdominal oblique

41
Q

The superficial inguinal ring lies between the
pelvic and abdominal tendons of the _____________

A

external abdominal oblique aponeurosis

42
Q
A

1- Testis
2- Gubernaculum
3- Vaginal Process
4- Testicular artery

43
Q

a jelly-like cord stretching from the testicle to the tail of the epididymis, and then into the inguinal canal

A

gubernaculum

44
Q

gubernaculum becomes the ________

A

scrotal ligament

45
Q

what does this depict

A

Movement of testis from
peritoneal cavity into the scrotum

46
Q

Timing of testicular descent:
Horse

A

10-14 days before or after parturition

47
Q

Timing of testicular descent:
Ruminants and pigs

A

before parturition

48
Q

Timing of testicular descent:
Carnivores

A

slightly after parturition

50
Q

identify the glands

51
Q

identify 1,2,4

A
  • 1- Testis
  • 2- Head of the epididymis-
  • 2`- Body
  • 2``- Tail
  • 4- Deferent duct
52
Q

How do spermatozoa mature in the epididymus

A

Spermatozoa mature into
mature sperm in the head and body. (Head not shown
here, but should be opposite of the tail)

53
Q

continuation of the epididymis for
transportation of sperm

A

Deferent duct

54
Q

Coil of testicular veins around the testicular artery, drawing heat away from the artery
to cool blood before reaching the testicle

A

Pampiniform plexus

55
Q

The serosal fold connecting the visceral and parietal vaginal tunics

A

Mesorchium

56
Q

identify 5-8

A

5- Pampiniform plexus

6- Mesorchium

7- Proper ligament of the testis

8- Ligament of the tail of the epididymis

58
Q

what are the 4 main functions of the epididymus

A
  1. passageway for sperm out of the seminiferous tubules

2.store sperm

3.fluid secretion to nourish sperm

4.place for sperm maturation

60
Q
A
  • 1- Head of the epididymis
  • 2- Body of the epididymis
  • 3- Pampiniform plexus
61
Q

what adds fructose and citric acid to nourish the sperm

A

seminal vesicles (accessory glands)

62
Q

what gland is located at the neck of the bladder

A

prostate gland

63
Q

what 4 things does the prostate gland (accessory gland) do

A
  1. cleans the urethra prior to and during ejaculation
  2. provides minerals for sperm
  3. provides medium for sperm transport
  4. provide the characteristic odor of semen
65
Q

In general, these glands are
associated with the urethra and add the liquid portion of the ejaculate

A

Accessory Sex Gland

66
Q

T/F During a breeding
soundness exam in cattle
and horses the accessory
sex glands may be palpated
rectally

67
Q

what should we assess accessory glands for when palpating

A

symmetry, and should not be overly sensitive when palpated

make sure to palpate ALL accessory glands

68
Q

what accessory glands do horses have

69
Q

what accessory glands do ruminants have

70
Q

what accessory glands do pigs have

71
Q

what accessory glands do dogs have

72
Q

what accessory glands do cats have

73
Q

what is the other name for the bulbourethral gland

A

Cowper’s gland

74
Q

T/F bulbourethral gland (cowpers) is a paired organ

75
Q

what is the purpose of bulbourethral gland (cowpers)

A

cleans urethra prior to semen passage

77
Q

T/F bovines have a cartilaginous penis

78
Q

what is the route the sperm travels out of the body

A

testicle
epididymus
ductus deferns
urethra
glans penis

79
Q

Identify A and B

A

A) vesicular gland
B) bulbourethral gland