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BIO 224 LESS GET IT > Lecture 15 > Flashcards

Lecture 15 Flashcards

1
Q

Mesonephric duct

A

Previously used by kidneys- tested take over

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2
Q

Mesonephric duct & paramesonephric duct are what germ layer?

A

Mesoderm

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3
Q

Mesonephric duct derivatives?

A

Vas deferens, epdiymis, seminal vesicles

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4
Q

Butt

A

Anus-levator Ani-anal sphincter-obdurator fascia

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5
Q

Ductus deferens turns into the

A

Spermatic cord

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6
Q

The mesonephric duct was previously used by what organ

A

Kidneys-testes take it over

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7
Q

Like the kidneys the gonads develop?

A

Retroperiotoneal near the dorsal body wall

Gonads are derived from intermediate mesoderm

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8
Q

Testis take over the mesonephric duct for itself and winds up becoming the spematic duct or?

A

Ductus deferens

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9
Q

Paramesonephric female

A

Uterine tubes, uterus, cervix

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10
Q

Mesonephric duct does

A

Drain sperm from testis

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11
Q

Scrotum

A

Pouch protruding from body wall

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12
Q

What contained in spermatic cord

A

Vas deferens, testicular arteries, nerves veins

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13
Q

Muscle from penis come from

A

Abdominal muscle

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14
Q

Gubernaculum

A

Passes through body wall-all layers represented in scrotum

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15
Q

External oblique

A

External spermatic fascia

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16
Q

Internal oblique

A

Cremastic muscle

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17
Q

Transverse abdomen

A

Transversal is fascia

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18
Q

Skin layers

A

Skin -epididymis-dartos (superficial fascia)-external spermatic cord (external oblique)- cremaster muscle (internal oblique)- internal spermatic fascia (transversus abdominus)-tunica vaginalis (ceolm+peritoneium)-ductus deferens/testicular arteries

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19
Q

Why descend testes

A

Temperature regulation of sperm must be kept a bit cooler than standard mammalian body temp

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20
Q

Testes guided by

A

Gubernaculun

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21
Q

The ductus deferens/ ureter..?

A

Looped over each other

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22
Q

Ligament called gubernaculum

A

Descends on each side of abdomen from in gubernaculum descends on each side of abdomen from inferior pile of gonad

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23
Q

Split of gubernaculum does what?

A

Two pieces of connective tissue hold testes to ductus deferens

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24
Q

Gubernaclum give rise too

A

Testis, suspernsory ligament,ligament of ovary of uterus, ovarian ligament

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25
Q

Gubernaculum passed obliquely through

A

Developing anterior abdominal wall at site of future inguibal canal, attaches at internal surface of labioscrotal swelling

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26
Q

Gubernaculum

A

Anchor testis to scrotal wall

27
Q

Labioscrotal swelling

A

Labia majora

Scrotum

28
Q

Where is it possible to get heribation

A

Inguinal - sensitive spot

29
Q

Where does the spermatic cord passes through opening to the scrotal pouch to reach the testis

A

opening to the scrotal pouch to reach the testis on each side

30
Q

Since the testes descend it?

A

Places the ductus deferens in a position just VENTRAL to the ureter

31
Q

Sperm are stored?

A

Distal end of the old meso duct @ distal end of the ductus deferens called the EPIDIDYMIS

32
Q

The cadual ends of the R and L paramesonephric ducts fuse bear their entrance into the embryonic cloaca to become the?

A

Uterus and vagina

33
Q

The remaining unfused parts that’s not the uterus and vagina from the paramesonephric duct is?

A

Uterine tubes aka Fallopian tubes

34
Q

Ovarian ligament

A

Connective tissue stamp/band anchoring ovary to lateral uterine wall

35
Q

Round ligament of the uterus

A

Remnant of the female gubernaculum connecting uterus to labia majora

36
Q

Broad ligament

A

Sheet of connective tissue supporting uterus laterally as wall as Fallopian tube and ovary out to the lateral body wall

  • mesosalpinx
  • mesometrium
  • mesovarium
  • suspernsory ligament of ovary
37
Q

Describe the descent of the ovary

A

Ovary descends following gubernaculum does not exit line testes
Ends descent just below rim of body pelvic girdle
Ovary a gubernaculum persists in the adult as a pair of fibrous cords that run through a vestigial inguibal cana, insets into the labia majora ( round ligament of uterus)

38
Q

Mesosalpinx

A

Is part of the lining of the abdominal cavity-portion of the broad ligament that stretches from the ovary to the level of the uterine tube

39
Q

Mesometrium

A

Mesentary of the uterus below ovary

40
Q

Mesovarium

A

Above ovary

41
Q

Suspensory ligament of the ovary

A

Extends out from the ovary to the wall of the pelvis connects ovary to wall of pelvis

42
Q

The division of the cloaca is divided by

A

Urorectal septum
It divided the cloacal opening off the urogenital opening from the Amy’s
More ventral of the two

43
Q

Uterus and vagina

A

Recall the formation of the uterus from the midline fusion of the paramesonephric duct

Space left for the opening central to the rectum is the urogenital sinus

Midline outpocketing of the urogenital sinus grows dorsally toward uterus and forms a tubular VAGINA

44
Q

The vagina opens at the dorsal end into the uterus and its ventral?

A

Into the uretheral part of the urogenital sinus

45
Q

Three openings of the old cloaca

A

Urthera
Vagina
Anus

46
Q

Just above cloacal opening in human embryo is a small thing called the

A

Genital tubercle

47
Q

What does the the genital tubercle form, elongated what?

A

Cloacal rim
Elongated and comes to hang over opening
Specialized erectile tissue develops from mesoderm in the tubercle as well as rim of urogenital opening

48
Q

The specialized erectile tissue form as two masses on each side of the midline 4

A

Closer to midline r/l bulb

More laterally r/l crus (plural-cruca)

49
Q

Males have __ columns of erectile tissue

A

3

50
Q

R/l bulb in male fuse in midline to form

A

Corpus spongin sum

51
Q

Urethra emerges out of tip called

A

Glans penis

52
Q

Corpus cavernosa

A

R/l cruces remain independent and firm that

53
Q

R/l male sides are bound to one another by

A

Tunica albuginea-wraps around like banana peel)

54
Q

Erectile tissue in female

A

Bulbs do not fuse in midline and do not enlarge as much

55
Q

The top end of midline columns of erictike tissue

A

Clit

Sensitive, has homologous to penis

56
Q

Prostate

A

Upper end of urethera in male

57
Q

Seminal vesicles

A

Out pocking of ejac duct

58
Q

Bulb urethera glands

A

Postpelvic body wall male

59
Q

Female glands of inner all of urogenital sinus

A

Female

Greater vestibular glands - secrete muscous fluids that serve as lubricants

60
Q

Musuluature of perinal region this mass of specialized hypoxial myacle

A

Ischiocavernosus muscle

Bulborpongiosus muscle

61
Q

Ischocavernosus muscle

A

Arises from ischium behind crus of penis or clit

Wraps around corpora cavernosa to insert on either side of tunica albuginea

62
Q

Bulbospongipsus muscle

A

Arises from central tendon of the urogenital diaphragm cover the bulb of penis/ vestibular bulb (females)

63
Q

Males musculature of perineal region purpose?

A

Maintains erection of constricting venous return of blood

Bulbospongiosus May contract to aid in ejaculation

64
Q

Females function of musculature of perineal region

A

Possible a sphincter like function around vaginal in females

BIO 224 LESS GET IT (14 decks)

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