Three layers of the Vagina

• Mucosa: Stratified squamous epithelium on Lumen Side

• Muscularis: mix of SMOOTH & SKELETAL MUSCLE 

• Adventitia: C.T.; attaches VAGINA to nearby organs

RUGAE

*ridges in vaginal wall; distensible for baby passage.

[image]

pH of Vagina

4:

Thanks to Lactobacillus, preventing pathogens from colonizing in vagina!

   What upsets Lactobacillus populations &

↑↑↑ infections?

Douching

Hymen††

• is NOT an organ or a structure.

• integral part of  "tightness" of virgin vagina.

more of an "adjective" 

• 30-40% of females bleed when losing virginity

• more important to cultures than it is to medicine.

a.                                   h.

b.                                   i.

c.                                   j.

d.                                   k.

e.                                   l.

f.                                   m.

g.                                   n.

Mons Pubis

• fatty rounded area overlying the pubic symphasis

• after puberty this area is covered with hair
• folds to form LABIA MAJORA

Labia Majora

• hair covered folds of skin, C.T. & adipose below Mons

• highly vascularized & highly innervated

Labia minora

• hairless folds of skin extending down from clitoris
• highly vascularized, highly innervated & highly lubricated!!

Vestibule 

"chamber" of Vulva inside the labia minora

Pudendal cleft 

opening between labia majora, 

(only True external parts)

Bartholin's glands

• (greater vestibular glands) eventhough they are the smallest glands!
• tiny EXOCRINE glands lateral to the vaginal orifice
• keep the vagina "wet" and ready for penis incertion
• produce vulval lubrication (slowly during rest; copiously during clitoral erection
• THESE ARE THE FEMALE VERSION OF THE MALE'S *COWPER'S GLANDS*

Skene's glands

• (lesser vestibular glands) eventhough they are the largest!
• slightly larger EXOCRINE glands lateral tourethral orifice.

Clitoris

• virtually identical in structure to penis, but mostly inside †
• functionally identical to penis in terms of pleasure-creating
• only organ that has only one job.... TO PLAY!        

EXTERNAL STRUCTURES

OF

THE

CLITORIS

Which part of the "external" clitoris is the only actual external part?

GLANS CLITORIS

• (II) SPONGY CAVITIES MAKING UP BULK OF GLANS CLITORIS; ERECT WHEN STIMULATED
• APPROX. 4" LONG, (6 WHEN ERECT), BUT MUCH OF THIS IS *inside* 
• EXTERNAL SECTION AVERAGES 1/4"- 1" LONG
• VARIES GREATLY BETWEEN † 
• SOME WOMEN CAN HAVE A 3" LONG EXTERNAL ERECTION!!!

GLANS CLITORIS

MOST HIGHLY SENSITIVE TISSUE IN ALL HUMAN BIOLOGY PER UNIT VOLUME (EITHER SEX)

***ONLY ACTUAL EXTERNAL PART***

PREPUCE 

(HOOD) 

PROTECTIVE COVERING OVER GLANS CLITORIS; USUALLY CONTINUOUS WITH LABIA MINORA, (MAINTAINS SENSITIVITY)

INTERNAL STRUCTURES 

OF

THE

CLITORIS

• URETHRAL SPONGE                                    
• g-SPOT                                                        

URETHRAL SPONGE

"bulbs of vestibule"

• deeply internal; attaches to pubic arch
• derived from same embryonic tissue as penile spongy tissues and prostate (same as)
• as in º, the urethra passes thru it; surrounds vagina
• extends from bladder base and cervix to vestibule surface
• like † counterpart, consists of spongy tissue that fills with blood when sexually  stimulated

What happens to Urethral Sponge when female is aroused?

• fills with blood when stimulated
• this is clitoral erection
• ↓diameter of vagina
• pinches urethra shut (no pee!)
• urination IS possible for †, but is RARE
• most "urination" during sex is actually ejaculation!

In many women, if the urethral sponge is erect, what does this mean?

the deep end of the corpus cavernosa may be pressed directly aginst wall of the vagina, allowing direct stimulation of corpus cavernosa from the inside...

***hitting the g-Spot***

What is the Anatomical feature first noted in 1930s?

And who discovered it???

*g-Spot

*Dr. Ernst Gräfenberg

glands embedded in the urethral sponge:

Skene's Glands

Whose ducts tunnel to lateral sides of the urethra?

Skene's Glands

What glands are responsible for "female ejaculation" ?

Skene's Glands

Fructose, NaCl, citric acid,Vc, antibodies, lysozyme, creatine phosphate, PSA, Fe, Zinc, Copper, serotonin, β-endorphins,

are all ingredients for_________ __________....

Skene's Glands secretions...

in †,

the ___________ ___________

is the same as the seminal vesicles in a º...

Urethral sponge

Female Sexual response:

Erection  

        Orgasm           

Refractory Period   

*PARASYMPATHETIC
*SYMPATHETIC
*NONE 

• sensory/ physiological
• psychological
• parasympathetic (during sleep)
• spontaneous (idiopathic)

glands that produce slightly alkaline fluid to lube vulva...

Bartholin's glands

Glands' secretions that ↑↑↑ pH of vagina

(which is good for sperm)

BARTHOLIN'S GLANDS

BP in clitoris __________ drainage veins

COMPRESSES

when does the sympathetic NS take over?

when the clitoris is continuously stimulated an the † has an orgasm.

vasodilation throughout face, neck, upper chest and a massive endorphin release happens in reaction to

_______________.

ORGASM

______________ cannot occur without 

orgasm....

ejaculation

_________ _________

has been thought to converse with hypothalamus, and/or send signals to organs for vasodilation of clitoral spongy tissue durring erection/ orgasm...

Urethral sponge!!!

Largest cell in human body...

 2º Oocyte 

(up to 1 mm wide)

Smallest cell in human body

Sperm

(3 µm)

24º life span

2º Oocyte

24-120º lifespan

sperm

how many sperm ejaculated??

100

+ effect on sperm by female orgasm ...

when female orgasms, her muscle contractions pull semen up into body

thanks to the B lymphs, your immune system remembers 

EACH

&

EVERY

PARTNER,

YOU'VE *E*V*E*R* HAD!!!!!!!!!!

WBC'S love to attack sperm from

_____________

   relations....

POLYARMOUROUS

(OPEN)

Capacitation

removal of cholesterol from acrosome membrane, rendering it BRITTLE....