Lecture 15 Flashcards by Michaela Reyes

Mesonephric duct

Previously used by kidneys- tested take over

How well did you know this?

Not at all

Perfectly

Mesonephric duct & paramesonephric duct are what germ layer?

Mesoderm

How well did you know this?

Not at all

Perfectly

Mesonephric duct derivatives?

Vas deferens, epdiymis, seminal vesicles

How well did you know this?

Not at all

Perfectly

Butt

Anus-levator Ani-anal sphincter-obdurator fascia

How well did you know this?

Not at all

Perfectly

Ductus deferens turns into the

Spermatic cord

How well did you know this?

Not at all

Perfectly

The mesonephric duct was previously used by what organ

Kidneys-testes take it over

How well did you know this?

Not at all

Perfectly

Like the kidneys the gonads develop?

Retroperiotoneal near the dorsal body wall

Gonads are derived from intermediate mesoderm

How well did you know this?

Not at all

Perfectly

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

Ductus deferens

How well did you know this?

Not at all

Perfectly

Paramesonephric female

Uterine tubes, uterus, cervix

How well did you know this?

Not at all

Perfectly

Mesonephric duct does

Drain sperm from testis

How well did you know this?

Not at all

Perfectly

Scrotum

Pouch protruding from body wall

How well did you know this?

Not at all

Perfectly

What contained in spermatic cord

Vas deferens, testicular arteries, nerves veins

How well did you know this?

Not at all

Perfectly

Muscle from penis come from

Abdominal muscle

How well did you know this?

Not at all

Perfectly

Gubernaculum

Passes through body wall-all layers represented in scrotum

How well did you know this?

Not at all

Perfectly

External oblique

External spermatic fascia

How well did you know this?

Not at all

Perfectly

Internal oblique

Cremastic muscle

How well did you know this?

Not at all

Perfectly

Transverse abdomen

Transversal is fascia

How well did you know this?

Not at all

Perfectly

Skin layers

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

How well did you know this?

Not at all

Perfectly

Why descend testes

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

How well did you know this?

Not at all

Perfectly

Testes guided by

Gubernaculun

How well did you know this?

Not at all

Perfectly

The ductus deferens/ ureter..?

Looped over each other

How well did you know this?

Not at all

Perfectly

Ligament called gubernaculum

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

How well did you know this?

Not at all

Perfectly

Split of gubernaculum does what?

Two pieces of connective tissue hold testes to ductus deferens

How well did you know this?

Not at all

Perfectly

Gubernaclum give rise too

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

How well did you know this?

Not at all

Perfectly

Gubernaculum passed obliquely through

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

Gubernaculum

Anchor testis to scrotal wall

Labioscrotal swelling

Labia majora | Scrotum

Where is it possible to get heribation

Inguinal - sensitive spot

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

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

Since the testes descend it?

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

Sperm are stored?

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

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

Uterus and vagina

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

Uterine tubes aka Fallopian tubes

Ovarian ligament

Connective tissue stamp/band anchoring ovary to lateral uterine wall

Round ligament of the uterus

Remnant of the female gubernaculum connecting uterus to labia majora

Broad ligament

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

Describe the descent of the ovary

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)

Mesosalpinx

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

Mesometrium

Mesentary of the uterus below ovary

Mesovarium

Above ovary

Suspensory ligament of the ovary

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

The division of the cloaca is divided by

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

Uterus and vagina

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

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

Into the uretheral part of the urogenital sinus

Three openings of the old cloaca

Urthera Vagina Anus

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

Genital tubercle

What does the the genital tubercle form, elongated what?

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

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

Closer to midline r/l bulb | More laterally r/l crus (plural-cruca)

Males have __ columns of erectile tissue

R/l bulb in male fuse in midline to form

Corpus spongin sum

Urethra emerges out of tip called

Glans penis

Corpus cavernosa

R/l cruces remain independent and firm that

R/l male sides are bound to one another by

Tunica albuginea-wraps around like banana peel)

Erectile tissue in female

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

The top end of midline columns of erictike tissue

Clit Sensitive, has homologous to penis

Prostate

Upper end of urethera in male

Seminal vesicles

Out pocking of ejac duct

Bulb urethera glands

Postpelvic body wall male

Female glands of inner all of urogenital sinus

Female | Greater vestibular glands - secrete muscous fluids that serve as lubricants

Musuluature of perinal region this mass of specialized hypoxial myacle

Ischiocavernosus muscle | Bulborpongiosus muscle

Ischocavernosus muscle

Arises from ischium behind crus of penis or clit | Wraps around corpora cavernosa to insert on either side of tunica albuginea

Bulbospongipsus muscle

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

Males musculature of perineal region purpose?

Maintains erection of constricting venous return of blood Bulbospongiosus May contract to aid in ejaculation

Females function of musculature of perineal region

Possible a sphincter like function around vaginal in females