Fallopan Tube, Uterus, Vagina, External Genitalia

Manish Mevada Biology


Fallopian Tube

The function of the Fallopian tube or oviduct is to convey the ovum from the ovary to the uterus by peristalsis .

Fertilisation of the ovum generally takes place in the upper portion of the Fallopian tube ( ampulla ) .

Each Fallopian tube ( 10-20 cm ) consists of four parts : ( i ) Infundibulum : Funnel shaped free end of the oviduct bearing finger like processes called fimbriae which help in collection of liberated ovum after ovulation ; ( ii ) Ampulla : The widest and longest part of the Fallopian tube ; ( iii ) Isthmus : Short , narrow , thick - walled portion follow ampulla ; and ( iv ) Uterine part : Passes through the uterine wall and communicates with the uterine cavity .


Uterus

It is an inverted pear - shaped highly elastic large part of female reproductive system where development of fetus takes place

Uterine wall have three layers : Perimetrium , an outer thin covering of peritoneum ; myometrium , middle thick layer of smooth musde fibres that shows strong contraction during delivery of the baby and endometrium , inner glandular layer lining the uterine cavity .

Uterus is differentiated into three regions - The upper dome - shaped region called fundus , the broad main part called body and a small , narrow , cylindrical inferior extremity called cervix . Cervix connect to the vagina through external os .


Vagina The vagina is a tube, about 10 cm long , that extends from the cervix to the outside of the body . It provides a passage for the menstrual flow , serves as the receptacle for sperm during intercourse and forms part of the birth canal during labour .

The opening of the vagina is called the vaginal orifice . It is partially covered in virgins by a perforate membrane called hymen .

External Genitalia . The female external genitalia include the mons pubis , labia majora , labia minora , clitoris , vestibule of the vagina , and vestibular glands . External genitalia are collectively called vulva.


Manish Mevada

M.Sc, M.Phil, B.Ed

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