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Flashcards in Histo - Male Urogenital System Deck (74):
0

List the 7 main structures of the male genital system.

-Testes
-Epididymis
-Ductus deferens
-Accessory sex glands
-Urethra
-Penis
-Prepuce

1

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

-Ampulla of ductus deferens
-Vesicular gland
-Prostate
-Bulbourethral gland

2

The dense, irregular CT capsule of the testes.

Tunica albuginea

3

The tunica albuginea is composed of what 3 things?

-Collagen fibers
-Elastic fibers
-Smooth mm

4

The tunica albuginea is covered by the ___.

Visceral vaginal tunic (tunica vaginalis)

5

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

-Vascular layer
-Branches of testicular a & v

6

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

Septuli testes

7

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

Seminiferous tubules

8

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

-Mediastinum testes
-Rete testes

9

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

-Ruminants, Pigs, & Dogs
-Horses

10

The seminiferous tubules are responsible for ___.

Spermatogenesis

11

What are the 2 portions of the seminiferous tubule?

-Tubuli contorti (convoluted portion)
-Tubuli recti (straight portion)

12

List the 3 components of the seminiferous tubules?

-Lamina propria
-Sustentacular cells
-Spermatogenic cells

13

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

-Lamina propria
-Peritubular cells

14

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

Tubular contraction

15

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

-Pyramidal
-Basal lamina
-Lumen of seminiferous tubules

16

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

-Sustentacular (sertoli) cells
-Tight junctions

17

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

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

18

What 2 cell types are phagocytosed by sustentacular cells?

-Degenerating spermatogenic cells
-Detached residual body of spermatids

19

What does Mullerian inhibitory hormone (MIH) inhibit?

Production of female duct

20

What is intratubular fluid used for?

Sperm transport

21

List the 5 types of spermatogenic cells.

-Spermatogonia
-Primary spermatocyte
-Secondary spermatocyte
-Spermatid
-Spermatozoa

22

Where are spermatogenic cells found?

Between & above the sustentacular cells

23

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

-Basal lamina
-Small

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