Human Reproduction System

The reproductive system is systemof orgens to get a new generation or reproduction. Many non-living substances such as fluids, hormones, and pheromones are also important accessories to the reproductive system. Unlike most organ systems, the sex of diferentiated system often have significant differences. The major organof human reprocdutive system include penis and vulva (the external genitialia) than internal organ include the tectiscles and ovaries.

A. Female Reproductive System

The female reproductive system consists of a pair of ovaries, a pair of oviducts, uterus, vagina and vulva. The main functions of the female reproductive system are to produce eggs, receive the sperms, provide the site for fertilisation, implantation of the growing embryo and development of the foetus. It also produces hormones that control the various stages of ovulation and maintenance of pregnancy.

female reproduction system

Ovaries

Ovaries are of oval struct ures that are present one on either side.The ovaries produce eggs, one at the time, every alternet mount. The eggs are produced by the germinalepitelial cells of the ovary.










Organ of female reproductive system :

1. Fallopia tubes
2. Uterus
3. Vagina
4. Vulva
   

B. Male Reproductive System
The male reproductive system compreses of the following :

1. Testes, a pair of organs that produce the male gameteses.
   
2. duct system, the network of tubes and tubeles for pasage of the seperment cell.
   
3. glands
4. penis

TASTE

The male reproductive

system comprises of a pair of testes that are present in a thin-walled sac called the scrotum. The scrotum is contained within the a

bdominal cavity in the embryonic stage. Shortly before birth, they come down and remain outside throughout life. This is because the testes cannot produce sperms at the body temperature. A temperature 2-3 degrees lower is ideal for the production of sperms. The scrotal sacs hang loose when it is hot and w

hen it is cold the skin of the scrotal sacs contracts and this keeps them in close conta

ct with the

body.

The seminiferous tubules produce sperms that are passed along the tubules to the posterior region of the testis. Th

e sperms are produced by a process called the spermatogenesis. The interstitial cells are also called the Leydig cells and they secrete the hormone testosterone. In addition they also form a packing tissue between the seminiferous tubules.

Duct System
From the seminiferous tubules, the seperma are passed into a network of 10-12 duct calles the everent duct or the vasa everentian. they are than passed into a highly coiled tubular part caled the epipydidimis.
The seperma from the epididymis pass into a distinct tube called the vas deferens, also called the sperm duct. Vas deferens is also coiled though not much. It rises into the abdominal cavity and loops over the ureter of that side.

Glands
the varios glands acociated

associated with the male reproductive system are as f

ollows:

• Seminal vasucles
• Prostrated gland
• Cowpers glends
• penis
  

Seminal Vesicles

A pair of seminal vesicles are glands that are present behind the urinary bladder. Each sperm duct has the seminal vesicle of its side secreting a fluid into the common ejaculatory duct. This fluid along with the sperms is called the semen, a milky fluid.

Prostate Gland

It is a bi-lobed gland near the opening of the urethra. The prostate gland also pours its secretion into the urethra. It is alkaline and mixes with the semen.

Cowper's Glands

They are a pair of small ovoid glands that secrete lubricatin

g fluid into the urethra just before it enters the penis.

The secretions of these glands make the sluggish sp

erms more active and help in the passage of sperms through the duct system and then in the ejaculation.

Penis

Penis is a muscular organ containing erectile

tissue. The tissue is richly supplied with blood vessels. On sexual stimulation the penis is gorged (supplied) excess with blood which causes it to become erect. During sexual intercourse, the penis is inserted into the vagina of the females before ejaculation. Ejaculation is the release of sperms by the penis to the outside.

C. Fertilisation

Seperm

seperm and ovum