write the function of following parts in human female reproductive system (1) overy (2) oviduct (3) uterus
Answers
The female reproductive system contains a pair of ovaries (primary sex organs), a pair of oviducts/fallopian tubes, uterus, vagina, external genitalia, pair of accessory genital glands called Bartholin's glands and a pair of mammary glands. The major parts are internal and occur in the lower part of the abdominal region around the area of urinary bladder. Since, you asked three of them, I will answer it accordingly:
1) Ovaries (given by Steno et al in 1667): They are a pair of grayish-pink ovoid or almond shaped primary sex organs (3 centimeter in length and 1.5 to 2.0 centimeters in thickness) or female gonads which are lying in the upper lateral part of pelvis near the kidneys and are attached firmly by the ligaments to both uterus and the abdominal wall. Ovary has a small hole called hills where nerves and blood vessels pass into it.
Function of Ovary: A mature graffiti follicle is called as Graafian follicle which has a diameter of 20 millimeters. Other constituents are follicular cells which have the function of nourishing the cells formed from undifferentiated oogonia. It has another crucial function of completing the fertilization and forming other multi-celled stages like morula, forming corpus luteum to manage the endometrial lining, hence, maintains the menstrual cycle.
2) Oviduct or Fallopian tubes or Uterine tubes: They are the pair of muscular and internally ciliated tubes which are of 10-12 centimeters in length which lie horizontally over peritoneal cavity arising near the ovary and ending at the uterus. A Fallopian tube is divided into four parts, Infundibulum, Ampulla, Isthmus and the Uterine part.
Function of Oviducts: The oviduct or the Fallopian tube has a mucosa which is an epithelium of ciliated and secretory columnar cells lying against the wall of oviduct. Secretory cells of the Uterine tubes provide and produce a viscous secretion for nourishing and protection of the ovum or ova (from the ovary). The passage of the ovum is facilitated by the peculiar movements of cilia and the muscular contractions of the fallopian or oviductal wall.
3) Uterus and its Function: The uterus is a pyriform, hollow muscular thick-walled but distensible median structure located above and behind the urinary bladder that is actually meant for nourishing and "development of the foetus". For this the uterus is capable of tremendous enlargement for the foetus to come out in the expulsopion and after birth stage. The empty uterus is 7.5 centimeters long and approximately 5 centimeters broad and about 2.5 centimeters thick. Lining layer of the uterus is called and known a source endometrium which is a mucous membrane essential for the fertilization to eventually complete by the implantation process and forming placenta and umbilical cord through endometrial cells by the help of decidua and its final decidualisation.
★Functions of the uterus---- include nurturing the fertilized ovum that develops into the fetus and holding it till the baby is mature enough for birth. The ferlized ovum gets implanted into the endometrium and derives nourishment from blood vessels which develop exclusively for this purpose.