Reproductive and Sexual Response System

Reproductive and Sexual Response System

Introduction

Sexual Reproduction is the process that creates new life forms from two different reproductive cells or gametes, which come from two parents of different sexes. The process of sexual reproduction has allowed the development of a wide variety of organisms. Living beings, whether plant or animal species have the ability to reproduce sexually to give rise to new offspring, i.e., to perpetuate the species over time (Carroll et al., 2006).

The primary condition to be carried out sexual reproduction is the union of two different specialized cells and reproductive cells called gametes. One of these cells, the male comes from an individual male and another female, is provided by an individual female. The two most important features of sexual reproduction are the presence of reproductive cells or gametes, which are produced in specialized organs and the union of gametes that results in the formation of a new being (Buss & Schmitt, 2007).

Female reproductive system

The female reproductive system is perhaps the holiest place of the human species: where fertilization occurs and development the new being. The reproductive system is constituted, both the woman and man, the following parts: the gonads, which are the organs where gametes are formed and which produce the sex hormones; genital tract, exhaust ducts; and organs that allow sexual union mating call, which allows the encounter of gametes (Carroll et al., 2006). The parts of female reproductive have been discussed below.

Female gonads: ovaries

Gland is responsible for female sexual cells form suitable for reproduction and secrete female sex hormones: estrogen and progesterone, which control the menstrual cycle, the development of secondary sex organs and mammary glands.

The ovaries are developed by the kidneys. Each ovary is about 15 grams, about half the weight of a testicle. Its shape may resemble a large almond (Basson, 2000).

Fallopian tubes

The Fallopian tubes placed in the uterine cavity communicating with the abdominal cavity, and indirectly to the ovary. Have a more or less cylindrical. There are three areas; portion intramural or interstitial portion isthmic, ampullary portion.

The latter is the thickest area of ??the tube and ends in a series of tabs or strips, which have been likened to the petals of a flower. This area is called the flag and connects the tube to the ovary (Giddens, 2002).

Uterus

The primary function of the uterus is to house a new being, nurture and protect it at various stages of normal pregnancy. It is a hollow muscular organ with thick walls. Is shaped like an inverted pear and is approximately 7 cm. in length and weighs about 50 grams. Ahead of the uterus are the urinary bladder and the rectum behind. In the uterus we can distinguish two parts: the voluminous body and neck.

The wall of the uterus is approx. 2 cm. thick and consists mainly of smooth muscle. The neck has few smooth muscle fibers but is rich in collagen and elastic fibers that allow you to expand about 10 cm. at the time of ...