By Caroline Brooks
The reproductive system is a collection of organs that work together for the purpose of producing a new life. Scientists argue that the reproductive system is among the most important systems in the entire body. Without the ability to reproduce, a species dies.
There are two parts to the reproduction system: The male and the female. This presentation will be talking about both genders and will explain how they contribute to reproduction.
The male reproduction system consists of two major parts: the testes and the penis.
The The 2 testes, also known as testicles, is where sperm are produced. The inside of the testes is divided into small compartments known as lobules. Each lobule contains a section of seminiferous tubule lined with epithelial cells. These epithelial cells contain many stem cells that divide and form sperm cells through the process of spermatogenesis.
The Penis is the male external sexual organ located superior to the scrotum. The function of the penis is to deliver semen into the vagina during sexual intercourse. In addition to its reproductive function, the penis also allows for the excretion of urine through the urethra to the exterior of the body.
There are many more parts in the male reproduction system in order for the human to be able to reproduce. These include the Scrotum, Epididymis, Spermatic Cords and Ductus Deferens, Seminal Vesicles, Ejaculatory Duct, Urethra, Prostate, Cowpers Gland's, and Semen. The video below will describe the functions of each part. You can start watching at the 2 minute mark.
Here is a quiz/interactive game:
The two major parts of the female reproduction system are the vagina and uterus. Both are very important in the production of a baby. The next two parts are the Fallopian Tubes and Ovaries.
The vagina is a canal that joins the cervix (the lower part of uterus) to the outside of the body. It also is known as the birth canal. It is very muscular and elastic. The vagina functions as the receptacle for the penis during sexual intercourse and carries sperm to the uterus and fallopian tubes. During menstruation, the menstrual flow exits the body via the vagina.
The uterus is a hollow, muscular, pear-shaped organ located posterior and superior to the urinary bladder. Connected to the two fallopian tubes on its superior end and to the vagina (via the cervix) on its inferior end, the uterus is also known as the womb, as it surrounds and supports the developing fetus (offspring) during pregnancy.
There are two other parts of the female reproduction system, which are the Vulva and Breasts and Mammary Glands.
The Ovaries and Fallopian Tubes
The ovaries are a pair of small glands about the size and shape of almonds, located on the left and right sides of the pelvic body cavity lateral to the superior portion of the uterus. Ovaries produce female sex hormones such as estrogen and progesterone as well as ova (commonly called "eggs"), the female gametes. The fallopian tubes are a pair of muscular tubes that extend from the left and right superior corners of the uterus to the edge of the ovaries. The fallopian tubes end in a funnel-shaped structure called the infundibulum, which is covered with small finger-like projections called fimbriae. The inside of each fallopian tube is covered in cilia that work with the smooth muscle of the tube to carry the ovum to the uterus. They also carry the egg to the Uterus.
The male produces the sperm, and the female produces the egg. These are called sex cells. Each sex cell contains half the genetic material, and when the two cells join, they have a full set of genetic material. Fertilization is when the the sperm combines with the egg and produces a zygote. This zygote develops into a new organism, and is then divided by mitosis. This division increases the number of cells, and this increase of cells makes you grow.
Here is a quiz/interactive game:
Thanks for reading and I hope you learned many new things about the Reproduction system!