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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
Primary spermatocytes are the ___ cells and are characterized by ___.
- Largest | - Obvious condensed chromosomes
25
Secondary spermatocytes are ___ and difficult to ___.
- Short lived | - Observe
26
Spermatids are ___ cells located towards the ___.
- Small, rounded cells | - Lumen of the seminiferous tubule
27
Spermatozoa are formed from ___ that undergo ___.
- Spermatids | - Spermiogenesis
28
During transformation, the heads of the spermatozoa become embedded in the ___ to gain ___.
- Sertoli (sustentacular) cells | - Nutrients
29
These cells are characteristic of steroid secreting cells.
Interstitial/Leydig cells
30
Leydig (Interstitial) cells produce ___ and are responsible for the development of ___.
- Testosterone | - Secondary male characteristics
31
When do Interstitial (Leydig) cells become apparent?
Puberty
32
List the 3 structures of the Intratesticular genital ducts.
- Straight tubules (tubuli recti) - Rete testes - Ductuli efferentes
33
The function of the straight tubules of the intratesticular genital ducts is to ___.
Connect the convoluted tubules to the rete testes
34
The rete testes are a continuation of the straight tubules, surrounded by the ___ that produce ___.
- Mediastinum testes | - Testicular fluid
35
The ductuli efferentes are efferent ducts of the intratesticular genital ducts that connect the ___.
Rete testes to the ductus epididymis
36
The ductuli efferentes are line with ___ that can be ___ or ___.
- Simple columnar - Ciliated - Non-ciliated
37
The ciliated cells of the ductuli efferentes help to ___ while the non-ciliated cells ___.
- Move spermatozoa | - Absorb tubular fluid
38
List the movement of sperm through the testes.
Straight tubules --> Rete testes --> Ductuli efferents --> Epididymus --> Vas deferens --> Urethra
39
The epididymis is surrounded by the ___ and is divided into what 3 parts?
- Tunica albuginea | - Head, Tail, & Body
40
The head of the epididymus is connected to the ___, while the tail & body are continued with the ___.
- Testes | - Ductus deferens
41
Which part of the epididymus arises from the testes in most animals? Which animal is the sequence reversed?
- Head | - Pigs
42
The epithelium of the epididymus is ___, containing both ___ & ___ cells.
- Pseudostratified - Columnar - Small basal cells
43
The columnar cells of the epididymus have long, branched, microvilli called ___.
Steriocilia
44
What are the 2 functions of the epididymus?
- Sperm maturation (head & body) | - Sperm storage (tail)
45
The ductus deferens has no ___.
Tunica albuginea
46
The mucosa layer of the ductus deferens is ___ with ___ epithelium, that becomes ___ toward the end of the duct.
- Folded - Pseudostratified, ciliated - Simple columnar
47
The terminal part of the ductus deferens is ___.
Ampullated
48
What are the 3 layers of the tunica muscularis of the ductus deferens?
- Circular layer - Longitudinal layer - Oblique layer
49
The ampulla of the ductus deferens is absent in ___ & ___.
- Cats | - Pigs
50
The vesicular gland is absent in ___.
Carnivores
51
List the 2 parts of the prostate gland.
- Body/Compact portion | - Pars disseminata
52
The body of the prostate gland is absent in ___ & ___.
- Sheep | - Goats
53
The pars disseminata of the prostate gland is absent in ___.
Horses
54
The bulbourethral gland is absent in ___.
Dogs
55
What 2 accessory sex glands are absent in the dog?
- Vesicular gland | - Bulbourethral gland
56
What 2 accessory sex glands are absent in the cat?
- Ampulla | - Vesicular gland
57
What accessory sex gland is absent in the pig?
Ampulla
58
The ampulla is a ___ gland lined with ___.
- Branched tubulo-alveolar | - Simple columnar
59
The vesicular gland is a ___ gland lined with ___.
- Compound tubulo-alveolar | - Pseudostratified columnar
60
The vesicular gland in a horse is a ___, and a ___ in a bull.
- True vesicle w/a wide lumen | - Compact lobulated organ
61
The compact part (body) of the prostate gland surrounds the ___ and the disseminate part is located in the ___.
- Pelvic urethra | - Propria-submucosa of the pelvic urethra
62
What is found in the tubules & alveoli of the prostate gland?
Concentrically laminated concretion (semi-solid excretions) of secretory material
63
The bulbourethral gland is a ___ gland, similar in appearance to a ___.
- Compound tubulo-alveolar | - Mucus gland
64
The secretory portion of the bulbourethral gland has ___ epithelium and shows a ___.
- Simple, tall columnar | - Mucin reaction
65
List the 2 parts of the urethra & where they are located.
- Pelvic urethra (inside body) | - Penile urethra (outside body)
66
The propria submucosa of the pelvic urethra is composed of endothelium lined cavernous spaces called ___.
Vascular stratum
67
In the penile urethra, the cavernous spaces are greatly increased and called ___.
Corpus spongiosum
68
The tunica muscularis of the urethra is ___ muscles around the bladder & ___ muscle around the urethra.
- Smooth | - Striated
69
List the 3 parts of the penis.
- Corpora cavernosa - Corpora spongiosum - Glans penis
70
The corpora cavernosa is surrounded by the ___ and divided by the ___.
- Tunica albuginea | - Median septum
71
The corpoa spongiosum surrounds the ___.
Penile urethra
72
The glans penis is highly ___ and well developed in what 2 species?
- Vascularised | - Horses & Dogs
73
Which part of the penis is dorsal (top, touching the belly)? Which is ventral?
- Corpora cavernosa | - Corpora spongiosum

SDR II (42 decks)

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