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SDR II > Histo - Male Urogenital System > Flashcards

Histo - Male Urogenital System Flashcards

0
Q

List the 4 accessory sex glands of the male genital system.

A
  • Ampulla of ductus deferens
  • Vesicular gland
  • Prostate
  • Bulbourethral gland
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1
Q

List the 7 main structures of the male genital system.

A
  • Testes
  • Epididymis
  • Ductus deferens
  • Accessory sex glands
  • Urethra
  • Penis
  • Prepuce
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2
Q

The dense, irregular CT capsule of the testes.

A

Tunica albuginea

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3
Q

The tunica albuginea is composed of what 3 things?

A
  • Collagen fibers
  • Elastic fibers
  • Smooth mm
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4
Q

The tunica albuginea is covered by the ___.

A

Visceral vaginal tunic (tunica vaginalis)

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5
Q

The interior surface of the tunica albuginea has a ___ formed by ___.

A
  • Vascular layer

- Branches of testicular a & v

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6
Q

The CT trabeculae extending inward from the tunica albuginea, that divides the testicular parenchyma into testicular lobules.

A

Septuli testes

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7
Q

Each lobule formed by the septuli testes contains 1-4 ___.

A

Seminiferous tubules

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8
Q

The septuli testes is continuous with the ___, which is a CT area containing the ___ & blood vessels.

A
  • Mediastinum testes

- Rete testes

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9
Q

The mediastinum testes is well developed in what 3 species? Poorly developed in which species?

A
  • Ruminants, Pigs, & Dogs

- Horses

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10
Q

The seminiferous tubules are responsible for ___.

A

Spermatogenesis

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11
Q

What are the 2 portions of the seminiferous tubule?

A
  • Tubuli contorti (convoluted portion)

- Tubuli recti (straight portion)

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12
Q

List the 3 components of the seminiferous tubules?

A
  • Lamina propria
  • Sustentacular cells
  • Spermatogenic cells
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13
Q

The seminiferous tubules are surrounded by ___ which contain ___ cells.

A
  • Lamina propria

- Peritubular cells

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14
Q

The peritubular cells of the lamina propria of the seminiferous tubule are responsible for ___.

A

Tubular contraction

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15
Q

Sustentacular (sertoli) cells are elongated ___ cells, whose base adheres to the ___ and whose apex extends into the ___.

A
  • Pyramidal
  • Basal lamina
  • Lumen of seminiferous tubules
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16
Q

The blood-testes barrier is formed by what 2 things?

A
  • Sustentacular (sertoli) cells

- Tight junctions

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17
Q

List the 7 functions the sustentacular (sertoli) cells perform for sperm cells.

A
  • Nutrition
  • Protection
  • Support
  • Phagocytosis
  • Produce Mullerian inhibitory hormone (MIH)
  • Secrete Intratubular fluid
  • Form blood-testes barrier
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18
Q

What 2 cell types are phagocytosed by sustentacular cells?

A
  • Degenerating spermatogenic cells

- Detached residual body of spermatids

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19
Q

What does Mullerian inhibitory hormone (MIH) inhibit?

A

Production of female duct

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20
Q

What is intratubular fluid used for?

A

Sperm transport

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21
Q

List the 5 types of spermatogenic cells.

A
  • Spermatogonia
  • Primary spermatocyte
  • Secondary spermatocyte
  • Spermatid
  • Spermatozoa
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22
Q

Where are spermatogenic cells found?

A

Between & above the sustentacular cells

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23
Q

Spermatogonia cells are situated next to the ___ and are relatively ___.

A
  • Basal lamina

- Small

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24
Q

Primary spermatocytes are the ___ cells and are characterized by ___.

A
  • Largest

- Obvious condensed chromosomes

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25
Q

Secondary spermatocytes are ___ and difficult to ___.

A
  • Short lived

- Observe

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26
Q

Spermatids are ___ cells located towards the ___.

A
  • Small, rounded cells

- Lumen of the seminiferous tubule

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27
Q

Spermatozoa are formed from ___ that undergo ___.

A
  • Spermatids

- Spermiogenesis

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28
Q

During transformation, the heads of the spermatozoa become embedded in the ___ to gain ___.

A
  • Sertoli (sustentacular) cells

- Nutrients

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29
Q

These cells are characteristic of steroid secreting cells.

A

Interstitial/Leydig cells

30
Q

Leydig (Interstitial) cells produce ___ and are responsible for the development of ___.

A
  • Testosterone

- Secondary male characteristics

31
Q

When do Interstitial (Leydig) cells become apparent?

A

Puberty

32
Q

List the 3 structures of the Intratesticular genital ducts.

A
  • Straight tubules (tubuli recti)
  • Rete testes
  • Ductuli efferentes
33
Q

The function of the straight tubules of the intratesticular genital ducts is to ___.

A

Connect the convoluted tubules to the rete testes

34
Q

The rete testes are a continuation of the straight tubules, surrounded by the ___ that produce ___.

A
  • Mediastinum testes

- Testicular fluid

35
Q

The ductuli efferentes are efferent ducts of the intratesticular genital ducts that connect the ___.

A

Rete testes to the ductus epididymis

36
Q

The ductuli efferentes are line with ___ that can be ___ or ___.

A
  • Simple columnar
  • Ciliated
  • Non-ciliated
37
Q

The ciliated cells of the ductuli efferentes help to ___ while the non-ciliated cells ___.

A
  • Move spermatozoa

- Absorb tubular fluid

38
Q

List the movement of sperm through the testes.

A

Straight tubules –> Rete testes –> Ductuli efferents –> Epididymus –> Vas deferens –> Urethra

39
Q

The epididymis is surrounded by the ___ and is divided into what 3 parts?

A
  • Tunica albuginea

- Head, Tail, & Body

40
Q

The head of the epididymus is connected to the ___, while the tail & body are continued with the ___.

A
  • Testes

- Ductus deferens

41
Q

Which part of the epididymus arises from the testes in most animals? Which animal is the sequence reversed?

A
  • Head

- Pigs

42
Q

The epithelium of the epididymus is ___, containing both ___ & ___ cells.

A
  • Pseudostratified
  • Columnar
  • Small basal cells
43
Q

The columnar cells of the epididymus have long, branched, microvilli called ___.

A

Steriocilia

44
Q

What are the 2 functions of the epididymus?

A
  • Sperm maturation (head & body)

- Sperm storage (tail)

45
Q

The ductus deferens has no ___.

A

Tunica albuginea

46
Q

The mucosa layer of the ductus deferens is ___ with ___ epithelium, that becomes ___ toward the end of the duct.

A
  • Folded
  • Pseudostratified, ciliated
  • Simple columnar
47
Q

The terminal part of the ductus deferens is ___.

A

Ampullated

48
Q

What are the 3 layers of the tunica muscularis of the ductus deferens?

A
  • Circular layer
  • Longitudinal layer
  • Oblique layer
49
Q

The ampulla of the ductus deferens is absent in ___ & ___.

A
  • Cats

- Pigs

50
Q

The vesicular gland is absent in ___.

A

Carnivores

51
Q

List the 2 parts of the prostate gland.

A
  • Body/Compact portion

- Pars disseminata

52
Q

The body of the prostate gland is absent in ___ & ___.

A
  • Sheep

- Goats

53
Q

The pars disseminata of the prostate gland is absent in ___.

A

Horses

54
Q

The bulbourethral gland is absent in ___.

A

Dogs

55
Q

What 2 accessory sex glands are absent in the dog?

A
  • Vesicular gland

- Bulbourethral gland

56
Q

What 2 accessory sex glands are absent in the cat?

A
  • Ampulla

- Vesicular gland

57
Q

What accessory sex gland is absent in the pig?

A

Ampulla

58
Q

The ampulla is a ___ gland lined with ___.

A
  • Branched tubulo-alveolar

- Simple columnar

59
Q

The vesicular gland is a ___ gland lined with ___.

A
  • Compound tubulo-alveolar

- Pseudostratified columnar

60
Q

The vesicular gland in a horse is a ___, and a ___ in a bull.

A
  • True vesicle w/a wide lumen

- Compact lobulated organ

61
Q

The compact part (body) of the prostate gland surrounds the ___ and the disseminate part is located in the ___.

A
  • Pelvic urethra

- Propria-submucosa of the pelvic urethra

62
Q

What is found in the tubules & alveoli of the prostate gland?

A

Concentrically laminated concretion (semi-solid excretions) of secretory material

63
Q

The bulbourethral gland is a ___ gland, similar in appearance to a ___.

A
  • Compound tubulo-alveolar

- Mucus gland

64
Q

The secretory portion of the bulbourethral gland has ___ epithelium and shows a ___.

A
  • Simple, tall columnar

- Mucin reaction

65
Q

List the 2 parts of the urethra & where they are located.

A
  • Pelvic urethra (inside body)

- Penile urethra (outside body)

66
Q

The propria submucosa of the pelvic urethra is composed of endothelium lined cavernous spaces called ___.

A

Vascular stratum

67
Q

In the penile urethra, the cavernous spaces are greatly increased and called ___.

A

Corpus spongiosum

68
Q

The tunica muscularis of the urethra is ___ muscles around the bladder & ___ muscle around the urethra.

A
  • Smooth

- Striated

69
Q

List the 3 parts of the penis.

A
  • Corpora cavernosa
  • Corpora spongiosum
  • Glans penis
70
Q

The corpora cavernosa is surrounded by the ___ and divided by the ___.

A
  • Tunica albuginea

- Median septum

71
Q

The corpoa spongiosum surrounds the ___.

A

Penile urethra

72
Q

The glans penis is highly ___ and well developed in what 2 species?

A
  • Vascularised

- Horses & Dogs

73
Q

Which part of the penis is dorsal (top, touching the belly)? Which is ventral?

A
  • Corpora cavernosa

- Corpora spongiosum

SDR II (42 decks)

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