Reproductive system information

When the baby is ready to be born, its head presses against the cervix which then relaxes. Hermaphroditismin which one individual contains functional reproductive organs of both sexes, is common among lower invertebrates; yet separate sexes occur in such primitive animals as sponges, and hermaphroditism occurs in animals more highly evolved—e.

Large pockets of erectile tissue in the penis allow it to fill with blood and become erect.

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When the spermatozoon is fully mature, it is propelled by the lashing movements of the tail. It can take up to 2 years from menarche for a girl's body to develop a regular menstrual cycle. The secretion of these hormones causes a girl to develop into a sexually mature woman.

The fleshy area located just above the top of the vaginal opening is called the mons pubis pronounced: The prostate also contains smooth muscle tissue that can constrict to prevent the flow of urine or semen.

Together they extend from the testis to the urethra, where it lies within the prostate. The blood supply to the epididymis is by a branch from the testicular artery given off before that vessel reaches the testis.

The major reproductive organs of the male can be grouped into three categories. Semen contains sperm, the male reproductive gametes, along with a number of chemicals suspended in a liquid medium. As labor begins, the cervix open wider, the muscles contract to help push the baby through the vagina and out of the mother's body.

Girls with this condition can develop severe abdominal pain and should see a doctor because surgery may be necessary. The primary hormones involved in the functioning of the male reproductive system are follicle-stimulating hormone FSHluteinizing hormone LH and testosterone.

Approximately every 28 daysthe pituitary gland releases a hormone that stimulates some of the ova to develop and grow. Outside these is a ring of submucosal glands glands from which the mucosal glands developand farther out is a large outer zone of long branched glands, composing the bulk of the glandular tissue.

At its lower end the tube is constricted to form a straight duct or tube that joins with the corresponding ductus deferens to form the ejaculatory duct. FSH and LH are produced by the pituitary gland located at the base of the brain. Differentiation of the external genitalia in the human embryo and fetus.

In healthy adult males, semen contains around million sperm cells per milliliter. The lymph vessels, which also pass through the spermatic cord, drain to the lateral and preaortic lymph nodes. Ovum The tiny female sex cell that unites with a male sperm to form a fertilized egg.

The first category is sperm production and storage. Testosterone also is important in the development of male characteristics, including muscle mass and strength, fat distribution, bone mass and sex drive.

Does a man go through menopause. The tunica albuginea has extensions into each testis that act as partial partitions to divide the testis into approximately compartments, or lobules. Although most people think of the gonads as the male testicles, both sexes actually have gonads:.

Male reproductive system terms Orchid/o, test/o Testes (male gonad) * Orchiditis, orchidectomy, testicular artery, testosterone (male sex hormone) Balan/o Head of the penis Balanitis Andr/o Male Androgenic (stimulating maleness), androgynous (characteristics of male and female appearance) Prostat/o Prostate Prostatitis, prostatectomy Vas/o.

URL of this page: Male Reproductive System. Unlike the female reproductive system, most of the male reproductive system is located outside of the body. These external structures include the penis, scrotum, and testicles. The body of the. The female reproductive system is designed to carry out several functions.

It produces the female egg cells necessary for reproduction, called the ova or oocytes. The system is designed to. The male reproductive system includes the scrotum, testes, spermatic ducts, sex glands, and penis.

Animal reproductive system

These organs work together to produce sperm, the male gamete, and the other components of semen. All living things reproduce.

Reproductive system

Reproduction — the process by which organisms make more organisms like themselves — is one of the things that set living things apart from nonliving matter. But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it.

Reproductive system information
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Male Reproductive System: MedlinePlus