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VANA 101 > Reproductive System of the Dog - The Male Genital Organs in Dogs ( Finals ) > Flashcards

Reproductive System of the Dog - The Male Genital Organs in Dogs ( Finals ) Flashcards

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1
Q

The external male genital organs are:

A

– Testis
– Epididymis
– Ductus deferens
– Extra-pelvic urethra
– Penis

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2
Q

The internal or accessory genital organs are:

A

– Prostate
– Ampulla of the ductus deferens

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3
Q

• Oval, lies obliquely within the scrotum (with its long axis running dorsocaudally)

A

Testes

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4
Q

a stout, white fibrous capsule that surrounds the surface of the testis

A

Tunica albuginea

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5
Q

• The peritoneal layer that permits testicular mobility within the scrotum
• Develops from the vaginal process, an outpocketing of the abdominal peritoneum that exits the abdomen through the inguinal canal

A

Parietal and visceral vaginal tunics of the testis

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6
Q

• Develops within the abdominal cavity, just caudal to the kidneys (retroperitoneal)
• Descend from their abdominal position to take up residence within the scrotum

A

Testes

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7
Q

As the testis continues distally into the scrotum, it passes alongside (but not into) the?

A

vaginal process

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8
Q

The vaginal process envelops testis forming two layers:

A

the visceral (directly against the testis) and parietal (directly against the internal wall of the scrotum) vaginal tunic

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9
Q

• A pouch of skin carried high between the thighs in the caudal inguinal region
• Houses/covers the testes
• Controls testicular temperature

A

Scrotum

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10
Q

covers the external scrotal surface, variably pigmented, thin (facilitating heat loss), slightly oily, sparsely covered by fine hairs, and little subcutaneous fat is present

A

Skin

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11
Q

a thin layer of smooth muscle, elastic and collagenous fibers; contracts the scrotal skin when the cremaster muscle draws the testes near the body (during cold temp. and sympathetic drive)

A

Muscle (tunica dartos)

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12
Q

the parietal layer of the vaginal tunic forms the inner lining of the scrotum

A

Peritoneum

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13
Q

divides the internal cavity of the scrotum in half

A

Median septum

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14
Q

a line (external) extending the full length of the scrotum along the midline

A

Scrotal raphe

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15
Q

• The convoluted tubular structure that stores maturing and mature sperm following their production by the testis and prior to their ejaculation

A

Epididymis

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16
Q

Epididymis Position:

A

slightly applied to the dorsolateral surface of the testis

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17
Q

Part of the epididymis that lies at the cranial head of the testis; continuous with the internal duct system of the testis

A

Head

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18
Q

Part of the epididymis that passes along the dorsolateral region of the testis

A

Body

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19
Q

the caudal extremity of the epididymis, continuous with the ductus (vas) deferens

A

Tail

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20
Q

This ligament attaches the epididymal tail to the vaginal tunic and the internal spermatic fascia

A

Ligament of the tail of the epididymis

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21
Q

This ligament attaches the tail of the epididymis to the caudal pole of the testis

A

Proper ligament of the testis

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22
Q

• The tubular organ that conduct sperm from the tail of the epididymis to the prostatic region of the urethra

A

Ductus Deferens

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23
Q

Ductus Deferens Course:

A

– Testis
– Spermatic cord
– Abdominal cavity
– Prostate gland
– Prostatic urethra

24
Q

Ductus deferens passes from the lateral to medial surface of the caudal testicular pole; straightens and pass cranially along the dorsomedial border of the testis towards the cranial testicular pole

A

Testis

25
Q

It pass as one of the components of the spermatic cord through the inguinal canal and enters the interior of the abdominal cavity

A

Spermatic cord

26
Q

What courses slightly more cranially to make a wide arc across the lateral surface of the bladder cranial to the ureter

A

Abdominal cavity

27
Q

turns caudally and courses towards the prostate gland; pierces and enters the lobe of the prostate gland

A

Prostate gland

28
Q

passes through the substance of the gland before opening into the lumen of the prostatic urethra

A

Prostatic urethra

29
Q

• A collection of structures passing to and from the testis
• Extends from the deep inguinal ring to the testis

A

Spermatic Cord

30
Q

What structure contains the testicular artery and vein, efferent testicular lymphatic vessels, testicular nerve, and the ductus deferens with its associated artery and vein?

A

Spermatic cord

31
Q

– The components of the spermatic cord are invested by the visceral layer of the original vaginal process

A

Mesenteries

32
Q

What surrounds the deferent duct, artery and vein?

A

Mesoductus deferens

33
Q

surrounds the testicular artery, vein, nerves and efferent lymphatics

A

Mesorchium

34
Q

This muscle originates from the caudal edge of the internal abdominal oblique; elevates the testis in response to cold or to sympathetic drive

A

Cremaster muscle

35
Q

specialization of testicular vein; convoluted veins that cools the arterial blood to testes by countercurrent exchange

A

Pampiniform plexus

36
Q

This animal have a musculocavernous penis characterized by predominance of cavernous tissue (tissue containing a myriad of small spaces that fills with arterial blood to achieve erection of the penis)

A

Dogs

37
Q

the most proximal portion of penis, located in the region of ischial arch

A

Root

38
Q

two paired regions ( root of the penis )

A

Crura

39
Q

median region ( root of the penis )

A

Bulb

40
Q

the intermediate portion of the penis extending from the root to the beginning of the glans; the narrowest region of the penis

A

Body

41
Q

the most distal free portion of the penis; slightly larger than the body in the non-erect state

A

Glans

42
Q

globular in shape; entirely surrounds the proximal end of the glans; the most distensible part, increases dramatically in size owing to its role in forming the “tie” or “lock” characteristic of canine copulation

A

Bulbus glandis

43
Q

the elongate distal portion of the glans

A

Pars longa glandis

44
Q

surrounds the urethra

A

Corpus spongiosum

45
Q

contributes in the formation of the root, body and glans

A

Corpus spongiosum penis

46
Q

forms a portion of penile root and contributes to the formation of body and glans; surrounds the urethra in the region of ischial arch

A

Bulb of the penis

47
Q

comprise the two parts of the penile glans (bulbus glandis and pars longa glandis)

A

Corpus spongiosum glandis

48
Q

positioned dorsal to the urethra

A

Corpus cavernosum

49
Q

originates as the paired crura of the penis; blends with the base of the os penis

A

Tunica albuginea

50
Q

extends through the full length of the penile glans

A

Os penis

51
Q

contraction obstructs venous outflow from the penis, necessary from the beginning of penile erection throughout copulation ( muscle )

A

Ischiourethralis muscle

52
Q

This muscle withdraw the penis into the prepuce following erection

A

Retractor penis muscle

53
Q

The sheath of skin that houses the penile glans when the penis is not erect

A

Prepuce

54
Q

ring at the cranial end that opens into the preputial cavity

A

Preputial orifice

55
Q

forms a blind “gutter” the preputial fornix

A

Internal lamina

56
Q

• Prevents the prepuce from dangling from the end of the glans when the penis is flaccid
• During erection, relaxes and allows the glans to protrude from the prepuce
• After erection, contracts and draw the prepuce back over the penile glans

A

Preputial muscle

57
Q

• Accessory Genital Organ
• A bilobed organ surrounding the neck of the urinary bladder and the urethra
• Secretion of the gland contribute to the seminal fluid

A

The Prostate Gland

VANA 101 (34 decks)

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