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ANIMSCI3160 > Chpt 3: Male Reproductive Anatomy > Flashcards

Chpt 3: Male Reproductive Anatomy Flashcards

1
Q

consists of the spermatic cord, testis, epididymis, accessory sex glands, and penis

A

male reproductive system

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2
Q

produces spermatozoa and testosterone, inhibin, estrogen, proteins

A

testis

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3
Q

provides environment for final maturation of spermatozoa and serves as storage organ

A

epididymis

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4
Q

produce seminal plasma

A

accessory sex glands

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5
Q

copulatory organ

A

penis

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6
Q

production of sperm

A

spermatogenesis

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7
Q

produced, pass through rete tubules and efferent ducts, endter head and body of epididymis where they undergo changes that make them fertile, enter tail of epididymis, upon sexual excitation spermatozoa are shipped via contractions of epididymal duct and ductus deferens to a new location (pelvic urethra), accessory sex glands add seminal plasma, moves to end

A

path of sperm

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8
Q

spermatic cord, scrotum, testis, excurrent duct system, accessory sex glands, penis and muscles for protrusion, erection and ejaculation

A

basic components of male reproductive system

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9
Q

extends from inguinal ring to its attachment on the dorsal pole of the testis, suspends testis in scrotum, houses ductus deferens, cremaster muscle , and pampiniform plexus

A

spermatic cord

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10
Q

branches from abdominal aorta, is rature straight until it passes through inguinal canal, then becomes highly convoluted

A

testicular artery

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11
Q

in spermatic cord, branch into an elaborate network that forms many intimate finger like wrappings surrounding the highly convoluted testicular artery

A

testicular veins

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12
Q

consists of the testicular veins and artery, eventually forms a single vein that runs into the caudal vena caba, important for proper temperature control of testis

A

pampiniform plexus

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13
Q

provide vascular, lymphatic, neural connection to body, heat exchange, house cremaster muscle

A

functions of spermatic cords

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14
Q

formed by the complex, intimate network of the spermaic artery and spermatic veins, venous blood is cooled by direct heat loss from the testicular veins through the skin of the scrotum

A

countercurrent heat exchanger

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15
Q

long convoluted testicular artery serves as a

A

pulse pressure eliminator

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16
Q

exists in all arteries throughout the body, difference between systolic pressure (heart contraction) and diastolic pressure (heart relaxation)

A

pulse pressure

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17
Q

primary muscle supporting the testis and coursing the length of the spermatic cord, stiated muscle that’s continuous with the internal abdominal oblique muscle, helps support testis and aids in control of testicular temperature and facilitates blood movement

A

cremaster muscle

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18
Q

smooth muscle in scrotum, capable of sustained contractions, mesh like smooth muscle layer that lies just beneath scrotal skin, contracts/ relaxes depending on external temp

A

tunica dartos

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19
Q

two lobed sac, protects and supports testes, required for proper temperature regulation (thermosensor, swamp cooler), consists of four major layers

A

scrotum

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20
Q

skin, tunica dartos, scrotal fascia, parietal vaginal tunic

A

layers of scrotum

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21
Q

heavily populatedwith sweat glands required for maintenance of proper testicular temperature, sweat glands are innervated bysympathetic nerves that allow hypothalamus to detect temp change

A

scrotal skin

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22
Q

pair of organs, consided primary reproductive organs, produce spermatozoa and testosteron, inhibin, estrogens, variety of proteins, and fluid primarily originating from seminiferous tubules (within)

A

testis

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23
Q

covering of testis, composed of two layers the visceral vaginal tunic and the CT capsulthe tunica albuginea

A

testicular capsule

24
Q

closely associated with the tunica albuginea

A

vaginal tunic

25
Q

sends many finger like projections into the parenchyma of the testical and then join with mediastinum

A

tunica albuginea

26
Q

located in the middle of the testis, central CT core of testis, housed rete tubules

A

mediastineum

27
Q

located around mediastineum,consists of seminiferous tubules, interstitial cells of Leydig, capillaries, lymphatic vessels, and CT, soft tan mass, can be divided into tubular and interstitial comparment

A

testicular parenchyma

28
Q

part of parenchyma, consists of seminiferous tubules and all the cells and material inside them

A

tubular compartment

29
Q

part of parenchyma, consists of all cells and materials outside the seminiferous tubules like blood vessels, CT, lymphatics, nerves and Leydig cells that produce testosterone

A

interstitial compartment

30
Q

tiny channels through which spermatozoa are transported out of the testis

A

rete tubules

31
Q

section of seminiferous tubules where spermatogenesis predominantly occurs

A

tubulus contortus (convoluted portion)

32
Q

composed of a basement membrane and a layer of seminiferous (germinal) epithelium. surrounded by contractile peritubular cells, their contraction and flow of fluid secreted by Sertoli cells allows newly frmed spermatozoal to mobe into rete tubules

A

seminiferous tubule

33
Q

only somatic cells in seminiferous epithelium, are the governors of spermatogenesis, each hosts a maximum number of developing germ cells, contain receptors for FSH and testosterone, can produce androgen binding protein and sulfatedglycoproteins 1 and 2, transferrin, inhibin

A

Sertoli cells

34
Q

prevents immunologic destruciton of developing germ cells, formed by peritubular cells surounding the semiferous tuble and Sertoli cell junctional complexs

A

blood-testis barrier

35
Q

consists of efferent ducts, epididymal duct, the ductus deferens

A

excurrent duct system

36
Q

convey newly formed spermatozoa and tubular fluid (rete fluid) into epididymal duct

A

efferent ducts

37
Q

single, highly convoluted duct ranging in length, surrounded by smooth muscle responsible for rhythmic contractions which force spermatozoato travel along its course to tail

A

epididymal duct

38
Q

total spermatozoal content of epididymal duct, ductus deferens, and ampulla

A

extragonadal reserves (EGR)

39
Q

enlargements of the ductus deferens that open directly into the pelvic urethra

A

ampullae

40
Q

paired clands that are dorsocranial to pelvic urethra, secretions of this empty directly into the pelvic urethra, are not a reservoir for spermatozoa

A

vesicular glands (seminal vesicles)

41
Q

lies in close proximity to the juction between bladder and pelvic urethra

A

prostate gland

42
Q

paired glands located on either side of the pelvic urethra near ischial arch, usually small and ovoid, produce a viscous secretion that provides gel fraction of ejaculate and causes the seminal plasma to coagulate followin gejaculation

A

bulbourethral glands

43
Q

specialized distal end of penis, heavily populated with sensory neves

A

glans penis

44
Q

S-shaped configuaration along shaft of penis, allows the penis to be retracted inside the body, maintained by retractor penis muscles, located in species with a fibroelastic penis

A

sigmoid flexure

45
Q

pair of smooth muscles attached dorsally to th vertebrae and attached ventrally to the ventrolateral sides fo the penis, when contracted holds penis inside the sheath

A

retractor penis muscles

46
Q

area of spongy erectile tissue located with in the shaft of the penis

A

corpus cavernosum

47
Q

area of spongy erectile tissue immediately durrounding the penile urethra

A

corpus spongiosum

48
Q

paired muscles associatedwith pelvic urethra and penis, relatively short located in the area of root of penis, connect penis to ischial arch

A

ischiocavernosus muscles

49
Q

striated muscle that surrounds the pelvic urethra in a circular manner, thick, powerful muscle responsible for movement of seminal plasma and spermatozoa into penile urethra

A

urethralis

50
Q

overlaps root of penis and extends down the caudal and ventral surfaces, covers bulbourethral glands, empties the extrapelvic part of the urethra

A

bulbospongiosus muscle

51
Q

seminal vesicles, prostate body and disseminate, bulbourethral glands

A

bull, stallion

52
Q

seminal vesicles, prostate disseminate only, bulbourethral glands

A

ram

53
Q

seminal vescicles, prostate body and disseminate, bulbourethral glands

A

boar

54
Q

seminal vesicles, prostate body and disseminate (sometimes), bulbourethral glands

A

stallion

55
Q

prostate body

A

dog

56
Q

prostate body, bulbourethral glands

A

cat

57
Q

seminal vesicles, prostate body only, bulbourethral glands

A

human

ANIMSCI3160 (4 decks)

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