Anatomy Descent Of The Testes

Front 1

in the 5th week, the gonads of both sexes derive from which embryological tissues

Back 1

intermediate mesoderm of the posterior abdominal wall

underlying mesenchyme (embryonic connective tissue)

primordial germ cells

Front 2

primordial germ cells originate where

and migrate to

Back 2

primordial germ cells originate in the wall of the umbilical vesicle

and migrate to the gonadal ridges where they enter the underlying mesenchyme and are incorporated into the gonadal cords

Front 3

the indifferent gonads are comprised of a cortex and a medulla

ovaries are derived from the ___________

testes are derived from the______________

Back 3

ovaries derived from the cortex

testes derived from the medulla



the other part, in each case, regresses

Front 4

the testes gradually separate from the disintegrating mesonephros and become suspended by their own mesentery, called

Back 4

the mesorchium

Front 5

HCG stimulates what in the developing teste

Back 5

testosterone production

Front 6

Mullerian Inhibiting Substance does what

Back 6

produced by Sertoli cells until puberty, MIS inhibits the formation of the paramesonephric ducts that form the uterus and uterine tubes

Front 7

when does the lumina of the seminiferous tubules develop

Back 7

puberty

Front 8

testosterone stimulates the _______________ ducts to form male genital ducts

Back 8

mesonephric

Front 9

do inguinal canals develop in both sexes

Back 9

yes

Front 10

superior and inferior attachments of the gubernaculum


how many are there?

Back 10

sup= inferior pole of the gonad

inf+ the internal surface of the labioscrotal swellings

2, each side of the abdomen

Front 11

what is the processus vaginalis

Back 11

an evagination of the peritoneum in the testicular zone, ventral to the gubernaculum

Front 12

what herniates through the abdominal wall

Back 12

the processus vaginalis

Front 13

what fascial layers of the abdominal wall are carried by the processus vaginalis as it herniates through the wall

Back 13

External oblique
Internal oblique
Transversalis fascia
Peritoneum

Front 14

testes descend retroperitoneally at week _____


takes _____ days

Back 14

26


2 - 3

Front 15

extension of transversalis fascia becomes the__________

Back 15

internal spermatic fascia

Front 16

extension of the internal oblique muscle becomes the ___________

Back 16

cremasteric muscle

Front 17

extension of the external oblique aponeurosis becomes the ________________

Back 17

external spermatic fascia

Front 18

once the connecting stalk of the processus vaginalis is obliterated, what do you call that space

Back 18

tunica vaginalis

Front 19

what happens if the abdominal end of the processus vaginalis remains open and peritoneal fluid accumulates there

Back 19

hydrocele of the testis

Front 20

besides the gubernaculum, what 3 factors also drive the descent of the testes

Back 20

intra-abdominal pressure

differential growth

gonadotropic hormones

Front 21

does the testis pass through the processus vaginalis?

Back 21

No, posterior to it

the tunica vaginalis forms a 2-layered sac (visceral and parietal layer) which covers the testes

Front 22

what do you call the caudal remnant of the gubernaculum

Back 22

epidydimalscrotal ligament

Front 23

does the transversus abdominus muscle participate in the tunica vaginalis?

Back 23

no

Front 24

contents of the spermatic cord

Back 24

testicular artery and vein

ductus deferens

and... The ARTERY of the ductus deferens

the cremasteric artery

sympathetic nerves

genital br. of genitofemoral n.

lymphatic vessels

pampiniform plexus (a network of many small veins found in the sp. cord)

Front 25

cryptochorism

Back 25

undescended testis

Front 26

a fold of the intestines in the unfused processus vaginalis

Back 26

congenital indirect inguineal hernia

Front 27

descent of the ovaries

the gubernaculum attaches where caudally

Back 27

caudally to the uterus near the attachment of the uterine tube

Front 28

cranial part of the gubernaculum becomes what ligament in the ladies

caudal part?

Back 28

ovarian ligament

round ligaments of the uterus, which pass through the inguinal canals to terminate in the labia majora