Avian Male anatomy Flashcards

1
Q

what is the functions of the scrotum

A

-protects and supports the testes

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2
Q

_____-dual chambered pouch

A

scrotum

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3
Q

what does each half of the scrotum contain

A

-testis, epididymis, distal spermaticord

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4
Q

epididymis:

A
  • Head, body, tail

- maturation annd storage of spermatoza

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5
Q

Spermaticord: is made up of

A

composed of ductus deferens, testicular VAN, and mesoductus deferens+mesorchium

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6
Q

what are the layers of the scrotum

A
  • Outer skin with tunica dartos m.
  • spermatic fascia
  • vaginal tunic
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7
Q

what layers make up the vaginal tunic

A
  • parietal

- visceral-vaginal cavity

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8
Q

what is the blood supply to the scrotum

A

-External pudendal A

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9
Q

what muscle becomes the cremaster M.

A

-the caudal slip of the internal abdominal oblique M.

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10
Q

what it the main function of the Cremaster M

A

-pull testis closer to body

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11
Q

what is the function of the testicular vein

A

thermoregulation

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12
Q

what are the layers surrounding the testis

A
  • inner most: tunica albuginea
  • visceral vaginal tunic
  • Outer: parietal vaginal tunic
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13
Q

What is the decent

A

the migration of the testies from near the kidneys to the scrotum

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14
Q

what is phase 1 of descent

A

Extra-abdominal gubernaculum increases in size and dilates the inguinal canal to allow the testis to pass through

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15
Q

what is phase 2 of descent

A

The gubernaculum regresses and makes room for the testis

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16
Q

Cryptorchidism

A
  • hidden testicle

- when one or both testes did not descend and are retained in the abdominal cavity/inguinal canal

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17
Q

What makes an open castration “open”

A
  • when it goes through the parietal vaginal tunic

- this opens the vaginal cavity to the abdomen

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18
Q

what makes a closed castration “closed”

A
  • when the castration only goes through fascia and not the parietal vaginal tunic
  • this does not expose vaginal cavity to open air.
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19
Q

Function of the proper ligament of the testis

A

attaches the testis to the epididymis

20
Q

what is the function of the ‘ligament of the tail of the epididymis’

A
  • attaches the tail of the epididymis to the layers of the vaginal tunic
21
Q

Scrotal ligament function

A

-attaches the tail of the scrotum to the tunica dartos m

22
Q

function of the ductus deferens

A

transport sperm from tail to urethra

23
Q

where does the ductus deferens open into the urethra

A

Colliculus seminalis

24
Q

what is the genital fold

A

-peritoneal fold between each ductus deferens

25
Q

what is the path taken by the ductus deferens

A
  • from the tail of the epididymis
  • under the lateral ligament of the urinary bladder as it runs dorsal
  • to the pelvic urethra
26
Q

what are the types of penises

A
  • Musculocavernous

- Fibroelastic

27
Q

what type of penis do stallion, dog, humans, and cats have

A

Musculocavernous

28
Q

what type of penis do bull, boars, ram have

A

fibroelastic

29
Q

which type of penis has a sigmoid flexure

A

fibroelastic

30
Q

what is the characteristics of the erectile tissue of the fibroelastic penis

A

-there is little amount of erectile tissue

31
Q

what is the characteristics of the the erectile tissue in the musculocavernous penis

A

there is a large amount of erectile tissue

32
Q

how does a penis achieve an erection

A

-via relaxation of the retractor penis muscle and the erectile tissue filling with blood

33
Q

what are the types of erectile tissue

A
  • Corpus cavernosum

- corpus spongiosum

34
Q

what is located within the corpus spongiosum

A

the corpus spongiosum surrounds the penile urethra and cd pelvic urethra

35
Q

what are the parts of the penis

A

-Roots, Body, Glans

36
Q

Root of the penis is made of

A
  • 2 cura
  • bulb
  • m.s
37
Q

what is the body of the penis

A

the intermediate between the root and glans

38
Q

where is the glans penis and what is it made of

A
  • the most distal part

- Bulbous glandis, Pars longa glandis, Os penis

39
Q

where is the crus of the penis located

A

proximal end of the corpus cavernosum

40
Q

what is the function of the crus of the penis

A

anchors the penis at the ischiatic arch

41
Q

what covers the crus of the penis

A

the crus is covered by the ischiocavernousus m.

42
Q

where is the bulb of the penis located

A

between two crura

43
Q

what is the bulb of the penis covered by

A

the bulb of the penis is covered by bulbospongiosus m.

44
Q

where is the ischiocavernosus m

A

near the root of the penis

45
Q

where is the bulbospongiosus

A

-it overlaps with the bulb of the penis