ANATOMY OF FEMALE REPRODUCTIVE ORGANS
👉🏻 Overview:-
- The female reproductive system is designed to
carry out several functions.
- 4 is the normal pH of the vagina.
- 40 weeks is the normal gestation period.
- 400 oocytes released between menarche and
menopause.
- 400,000 oocytes present at puberty.
- 28 days in a normal menstrual cycle.
- 280 days (from last normal menstrual period) in a
normal gestation period.
💫 External genital organs:-
1.Mons pubis
2.Labia majora
3.Labia minore
4.Clitoris
5.Vestibule
6.Urethral opening
7.Vaginal orifice and Hymen
8.Bartholin's glands
9.Skene's gland
10.Vestibular bulbs
1.Mons pubis:-
- It is the pad of subcutaneous adipose connective tissue lying in front of the pubis that is covered with hair at puberty.
2.Labia Majora:-
- Has two folds of adipose tissue that border each side of the vagina.
- The labia majora enclose and protect the other external reproductive organs.
- It contain sebaceous glands, sweet glands, and hair follicles.
- After puberty, the labia majora are covered
with hair.
3.Labia Minora:-
- The labia minora are smaller folds (forchette) of
skin that lie inside the labia majora.
- Contains no hair follicles or sweat glands.
- The folds contain connective tissues numerous
sebaceous gland, erectile muscle fibers and
numerous vessels and nerve endings.
- Anteriorly, they are divided to enclosed the clitoris
and unite with each other in front-prepause and
behind- frenulum.
- The lower portion fuses known as fourchette.
4.Clitoris:-
- It is small cylindrical erectile body.
- Measuring about 1.5 to 2cm.
- Situated in the most anterior part of the vulva, the two labia minora meet at the clitoris.
- The clitoris is covered by a fold of skin, called the prepuce, richly supplied with nerves.
- The clitoris is very sensitive to stimulation and can become erect.
5.Vestibule:-
- It is a tringular space bounded ant by clitoris, post.
by fourchette and on either side by labium minus.
- It encloses:-
• Urethral opening
• Vaginal orifice and hymen,
• Bartholin's ducts opening
• Skene's glands
6.Urethral opening:-
- Situated in midline just infront of the vaginal orifice.
- About 1-1.5 cm below the pubic arch.
- The paraurethral ducts open either on the posterior
wall of urethral orifice or direct into the vestibule.
7.Vaginal Orifice and Hymen:-
- Lies in the posterior end of the vestibule.
- It incompletely enclosed by a septum of mucous membrane called hymen.
- The membrane varies in shape but is usually circular or crescentie in virgins.
- Hymen Located just inside the vaginal Opening.
- It is usually ruptured at the consummation of
marriage.
8.Bartholin's glands:-
- There are two bartholin's glands One on each side.
- They are pea sized and yellowish in colour and lined
by cuboidal epithelium.
- Each gland has a duet which measures about 2
cm and open into vestibular outside Close to the
posterior end of the vestibular bulb.
- During sexual excitement it secretes abundant alkaline mucus which helps in lubrication.
9.Skene's gland:-
- The largest paraurethral gland.
- Homologous to the prostate in the male.
- The two skene's ducts may open in the vestibule on
either side of externa urethral meatus.
10.Vestibular bulb:-
- These are bilateral elongated masses of erectile
tissuses situated beneth the mucous mambrane of
vestibule
- Each bulb lies on either side in vaginal orifice.
- They are likely to be injured during childbirth with
brisk haemorrhage
👉🏻 Blood supply:-
• Arterles:-
- Branch of Internal pudendal artery
- Branch of femoral artery
• Veins:-
- Internal pudendal vein
- Vesicle or vaginal venous plexus
- Long saphenous vein
👉🏻 Nerve supply:-
- Bilateral somatic nerve
- Posteroinferior part:-Pudental branch from posterior cutaneoys nerve
- Anterosuperior part:-Cutaneous branch from ilioinguinal Genital branch from genitofemoral nerve
- Between 2 groups the vulva - Pudental nerve
👉🏻 Lymphatic:-
- Superficial inguinal nodes
- Intermediate group of inguinal lymph nodes
- External and internal illiac lymph nodes
💫 Internal Genital organs:-
1.Vagina
2.Uterus
3.Fallopian tube
4.Ovaries
1.Vagina:-
✓ Introduction:-
- Vagina:- Birth canal
- It is fibro-musculo membranous sheath connects the external Genital organs to uterus.
- About 4 to 5 inches long in an adult women.
- It is the passageway for sperm to the egg and for Menstrual bleeding.
- Organ for copulation and forms the birth canal of parturition.
✓ Structures:-
- Posterior wall of vagina is 9 cm long
- Anterior wall is only 7 cm length
- The upper end of the vagina is known as the vault
- Pink in appearance
- PH 4-5 acidic due to Doderlein'bacilli which produce lactic acid from glycogen present in exfoliated cells.
• Layers:-
1.Mucous coat -no secreting glands
2.Submucous layer
3.muscular layer inner circular n outer longitudinal
muscles
4.Fibrous coat
✓ Fornics of Vagina:-
- Formed at the top of vagina due to projection of the
uterine cervix
- Four fornlcs are there:-
One anterior - front of cervix most shallow
One posterior - behind, deeper
Two lateral - either side of cervix
✓ Relations of vagina:-
• Anterior to the vagina - lie the bladder and the
urethra which are closely connected to the anterior
vaginal wall
• Posterior to the vagina - lie the pouch of douglas,
the rectum and the perineal body, each occupying
one third of the posterior vaginal wall
• Laterally on the upper two third are the pelvic
fascia and the ureters, which pass beside the cervix
• Superior to the vagina - lies the utreus
• Inferior to the vagina - lies the externalgenitalia
✓ Blood Supply:-
• Arterles:-
- cervico vaginal branch of uterine artery
- vaginal artery anterior division of internaliliac and Internal pudendal
• Veins:-
- Internal iliac vein
- Internal pudendal vein
- Lymphatic Internal illac group
- Superficial inguinal group
✓ Nerve supply:-
- Sympathetic and parasympathetic from the pelvic
plexus
- Lower part is supplied by the pudendal nerve
2.Uterus:-
✓ Introduction:-
- The uterus is a thick-walled, muscular, hollow pyriform organ
- Located in the middle of the pelvis, behind the bladder, and in front of the rectum. The
uterus is anchored in position by several ligaments.
- The uterus consists:-
a.Body(Corpus)
b.Isthumus
c.Cervix
- The cervix is the lower part of the uterus, which protrudes into the upper part of the vagina.
- It can be seen during a pelvic examination Like the vagina, the cervix is lined with a mucous membrane, but the mucous membrane of the cervix is smooth.
- Sperm can enter and menstrual blood can exit the uterus through a channel in the cervix (cervical canal).
- The cervical canal is usually narrow, but during labor, the canal widens to let the baby through
- The cervix is usually a good barrier against bacteria,
except around the time an egg is released by the
ovaries (ovulation), during the menstrual period, or
during labor.
✓ Functions:-
- The main function of the uterus is to sustain a developing fetus.
- It prepare for this possibility for each month
- At termination of pregnancy it expels the uterine
contents.
√ Relations:-
- Anterior - the uterovesical pouch and the bladder
- Posterior - the rectouterine pouch of the douglas
- Laterally-the broad ligament, the uterine tubes
- Superior - the intestine
- Inferior - the vagina
✓ Measurement and parts:-
- Measures 8cm long, 5cm wide, 1.25cm thick
- Weight 50-80gms
- Parts:-
1.The body or corpus
2.Isthumus
3.Cervix
- Secreation:-
• The endometrial:- Scanty and watery
• Cervix:- Alkaline,thick,rich in mucoprotein, fructose and sodium chloride
✓ Layers:-
- ENDOMETRIUM: inner lining of uterus, nourishes
developing embryo, built up each month for pregnancy, if not,shed during menstruation
- MYOMETRIUM: smooth muscular, supports fetus,
contracts at birth and to shed the endometrium
during menstruation.
- PERIMETRIUM: The perimetrium is a serous
membrane that lines the outside of the uterus.
✓ Arteries:-uterine artery-branch of internal iliac
artery
✓ Veins :- Internal liac vein
✓ Lymphatic:- Deep and Superficial lymph vessels
✓ Nerve supply:- Parasympathetic and sympathetic
3.Fallopian tube or oviducts:-
✓ Introduction:-
- The two fallopian tubes, which are about 4 to 5inches (about 10 cm) long, extend from the upper edges of the uterus toward the ovaries.
✓ Function:-
- Transport of the gametes
- To facilitate fertilization and survival of zygote
through its secretion
✓ Relations:-
- Anterior, Posteriorand Superior - the peritoneal
cavity and intestine
- Laterally - the sidewall of pelvis
- Inferior - the broad ligament and the ovaries
- Medial - the uterus lies between the uterine tubes
Structure 1) Serous 2 muscular, mucous
✓ Parts:-
1.The intestinal/intramural
2.The isthumus
3.The ampulla
4.The infundibulum
✓ Artery:- Uterine and ovary
✓ Veins:- Ovarian vein
✓ Lymphatic:- Along with the ovarian vessels to para aortic nodes
✓ Nerve supply:- Uterine and ovarian nerves
4.Ovaries:-
✓ Introduction:-
- Paired sex glands in female which are concerned for:-
1)Germ cell maturation, storage, its release
2)Steroidogenesis
- Each gland is oval shape and pinkish grey in colour
and surface is scarred during reproductive peroid.
- Measure-3cm length, 2cm breadth, 1cm thickness
✓ Relations:-
- Ovaries are intraperitoneal structures
- In nullipara, its lies in ovarian fossa
• Anterior - the broad ligaments
• Posterior - the intestine
• Laterally the infundibulopelvic ligaments and side
walls of the pelvis
• Superior to the ovaries lie the uterine tube
• Inferior to the ovaries lies the ovarian ligaments
- Two ends - Tubal and Uterine
- Two borders- Mesovarium anterior and Free posterior
- Two surfaces. Medial and lateral
✓ Structure:-
- The ovary is covered by a single layer of cubical cell known as germinal epithelium.
- Medulla
- Cortex
• Medulla:-
- supporting framework
- Made of fibrous tissue
- Has ovarian blood vessels
- Lymphatics and nerve travels through it
- there is small collection of cells called hilus cells
• Cortex:-
- It consits of stromal cell which are thickened
benetath the germinal epithelium to form tunica albugenia
- Functioning part of the ovum
- Contains ovarian follicals in different stage
✓ Artery:-ovarian and abdominal aorta
✓ Venous:- ovarian vein
✓ Lymphatic:- Along the ovarian vessels to para aortic nodes
√ Nerve supply:- ovarian nerves from T10 segment