Definitions

1. Testes are intact, as are wolffian structures (epididymis, vas deferens, seminal vesicles).
2. Testes are often small or cryptorchid.
3. The testes are located in the scrotum which is a sac of skin that lies between the upper part of the thighs.
4. The testes (or testicles) are a pair of sperm-producing organs that maintain the health of the male reproductive system.
5. The testes (singular: testis) are the primary male sexual organs in that they make sperm and produce testosterone.

Skin

1. Consequently, the testes are located outside the body in a sack of skin called the scrotum.

Disorders

1. These disorders affect the adrenal glands, nervous system, and testes.
2. Griffin J and Wilson J (1998) Disorders of the testes and the male reproductive tract in: Williams Textbook of Endocrinology 9th ed.

Removal

1. The testes, of course, are the loci of spermatogenesis, and their removal halts sperms production.
2. Thus, most physicians recommend early removal of the gonads (except scrotal testes).

Surgical Removal

1. In males, testosterone deficiency is the cause (for example, andropause or after surgical removal of the testes).

Tumors

1. Tumors. Some tumors, such as those involving the testes, adrenal glands or pituitary gland, can produce hormones that alter the male-female hormone balance.

Ovarian

1. A " true hermaphrodite " is defined as someone with both male gonadal tissue (testes) and female gonadal tissue (ovarian tissue).

Mammals

1. The early mammals had lower body temperatures and thus their testes worked efficiently within their body.

Damage

1. Radiation causes damage despite shielding of the testes, because of radiation scatter.

Gastrointestinal Tract

1. There may be noncontiguous nodal spread of the disease with more frequent involvement of the gastrointestinal tract, liver, testes, and bone marrow.

Female

1. The organs in animals that produce sex cells: ovaries in the female, testes in the male.
2. The zona reticularis secretes steroids that resemble the sex hormones secreted by the ovary in the female and testes in the male.

Gametes

1. A gonad is a sex organ that produces gametes, specifically the testes or ovaries in humans.

Meiosis

1. Ovaries (female gonads) and testes (male gonads) are the sites of meiosis.

Lungs

1. The parasite can infect the lungs, retina of the eye, heart, pancreas, liver, colon and testes.
2. There is an increased incidence of benign rhabdomyomas of the heart and angiomyolipomas of kidney, liver, lungs, thyroid, and testes.

Sac

1. The scrotum is a sac that hangs under the penis and holds the testes.

Undescended Testes

1. This is manifested as undescended testes in males and benign premature adrenarche in females.
2. Males with hypogonadotropic hypogonadism are often born with an unusually small penis (micropenis) and undescended testes (cryptorchidism).
3. Testicular Symptoms Previously undescended testes are common in men being investigated for infertility.

Fertility

1. Any structural abnormalities that damage or block the testes, tubes, or other reproductive structures can affect fertility.
2. Many men who were born with undescended testes have reduced fertility, even after orchiopexy in infancy.
3. Disorders of the penis and testes can affect a man's sexual functioning and fertility.

Result

1. Hypogonadism is the result of iron loading in the pituitary rather than in the testes.
2. In men, these increased levels of gonadotropins stimulate the Leydig cells of the testes and result in the production of higher testosterone levels.
3. It does involve significant under-production of testosterone by the testes, usually as a result of one of a number of possible causes.

Absence

1. A single micro-dose of fluoride injected into adult male albino rats causes arrest of sperm production and absence of sperm in the testes.
2. In pregnant rats, busulfan produced sterility in both male and female offspring due to the absence of germinal cells in the testes and ovaries.
3. It is useful for detecting large varicoceles, undescended testes, absence of vas deferens, cysts, or other physical abnormalities.

Cells

1. These cells are produced in the gonads, i.e., the testes and ovaries respectively.
2. Testosterone, a steroid, is made by the interstitial, or Leydig, cells of the testes.
3. In a growing mouse embryo, the cells that will become the testes or ovaries, known as germ cells, start out the same in both sexes.

Thymus

1. The endocrine glands include pituitary, thyroid, thymus and adrenal glands, as well as the pancreas, ovaries and testes.

Estrogen

1. This prompts ovaries to produce estrogen and eggs and testes to produce testosterone and sperm.

Brain

1. There are basically two types of hypogonadism; primary meaning the testes are not working and secondary meaning the signals from the brain are not working.
2. The testes produce testosterone regulated by a complex chain of signals that begins in the brain.
3. More than 90% of the body's creatine is stored in muscle tissue with minor amounts also present in the heart, brain and, in males, the testes.

Atrophy

1. Gosney JR. Atrophy of Leydig cells in the testes of men with longstanding chronic bronchitis and emphysema.
2. Torsion of the testes may cause atrophy.
3. We forget that the pituitary is susceptible to the same degradation and atrophy as the testes.

Breast

1. Self-examinations for cancers of the breast, testes, mouth, and skin can also help in detecting the tumors before the symptoms become serious.
2. Eleven patients had cancers of colon and rectum, gallbladder, breast, testes, prostate and leukemias.
3. About 50% of persons with PJS develop extracolonic cancers, usually of the breast, cervix, ovary, testes, or pancreas.

Luteinizing Hormone

1. Luteinizing hormone (LH) stimulates the testes in men and the ovaries in women.
2. Luteinizing hormone then signals the testes to produce testosterone.
3. The brain produces the pituitary hormones follicle stimulating hormone (FSH) and luteinizing hormone (LH) which trigger hormone production from the testes.

Secretion

1. Inadequate functioning of the testes or ovaries as manifested by deficiencies in gametogenesis or the secretion of gonadal hormones.

Sex Hormones

1. In addition, the pituitary secretes hormones that signal the ovaries and testes to make sex hormones.

Secreted

1. Pathophysiology: In boys, the main sex hormone is testosterone, which is secreted by the testes.
2. Oxytocin is also secreted within the brain and from a few other tissues, including the ovaries and testes.
3. Testosterone is secreted by the testes throughout life, but there is some decline with age.

Endocrine System

1. The ovaries, testes, and placenta also secrete hormones, and are considered to be important components of the endocrine system.

Spleen

1. The relative organ weights of the brain (13 %), liver (44 %), spleen (36 %) and testes (5 %) were increased in males at the top dose.

Normal

1. Elevated FSH levels reflect the impaired spermatogenesis, with return to normal once the testes recover.
2. Men with unilateral undescended testes will have overall semen quality of considerably less than normal.

Lymph Nodes

1. Others may develop tumors in the testes, ovaries, skin, nasal sinuses, or lymph nodes.

Characteristically

1. They characteristically have large testes and semen containing a few sperm.
2. Characteristically, these individuals have small, firm testes, delayed sexual maturation, azoospermia and gynecomastia.

Kidneys

1. Lutein and zeaxanthin are found in the liver, ovaries, pancreas, kidneys, spleen, testes, adrenals, and many eye tissues.
2. Chromium is stored principally in the kidneys, spleen and testes, with trace amounts found in the heart, lungs, pancreas and brain.
3. A congenital disease in which the body stores excessive amounts of iron in the liver, pancreas, kidneys, heart, testes and other tissues.

Greatest Concern

1. Amyloidosis may affect the gastrointestinal tract, liver, spleen, heart, and (in males) testes, but its effects on the kidneys are of greatest concern.

Septae

1. Each of the testes is divided into lobes, or septae, containing coiled seminiferous tubules lined with spermatozoa-producing cells.

Results

1. This typically results in gonadal failure (caused by lack of the pituitary hormones, LH and FSH, which control the testes and ovaries).
2. The condition results in the buildup of very-long-chain fatty acids in the nervous system, adrenal gland, and testes, which disrupts normal activity.
3. The testicular volumes for both the right and left testes as estimated by ultrasonography were smaller than results using the orchidometer.

Part

1. A little further down, bring your attention to the sexual glands, the ovaries or testes, and hold the golden energy within this part of your body.
2. Transplantation of testes to some other part of the body in animals is followed by normal development in sexual desire and potency.
3. A sac of skin, divided into two parts, enclosing the testes, epididymides, and a part of the vasa deferentia.

Aedeagus

1. An aedeagus (plural aedeagi) is a reproductive organ of male insects through which they secrete sperm from the testes during copulation with a female insect.

Male Mice

1. But Japanese researchers have shown that it's not as simple as that, by nurturing female eggs in the testes of male mice.

Steroid Hormones

1. The adrenal cortex, ovaries, and testes in fact produce at least small amounts of all of the steroid hormones.

Steroid Hormone

1. A steroid hormone, or androgen, produced in the testes that affects sperm production and male sex characteristics.

Development

1. Failure of development and a decrease in size of one or both testes are important symptoms of spermatogenic defects.
2. Removal of the thymus hastens the development of testes or ovaries.
3. The testes produce androgens, primarily testosterone, which are responsible for the development and maintenance of male secondary sex characteristics.

Secondary Sex Characteristics

1. The testes produce the male sex hormone testosterone, which controls the development of the male sex organs as well as secondary sex characteristics.

Progesterone

1. THE OVARIES & TESTES which secrete oestrogen & progesterone, and testosterone respectively.

Inhibin

1. The testes secrete two hormones called testosterone and inhibin.

Categories

1. Ovaries
2. Testosterone
3. Males
4. Sperm
5. Adrenal Glands

Related Keywords

* Abdomen * Adrenals * Adrenal Gland * Adrenal Glands * Androgen Deficiency * Azoospermia * Body * Cais * Cryptorchidism * Ductus Deferens * Epididymis * Estradiol * Females * Follicle Stimulating Hormone * Fsh * Function * Gland * Glands * Gonads * Hermaphrodites * Hormone * Hormones * Hormone Testosterone * Hypogonadism * Hypothalamus * Infertility * Inguinal Canal * Interstitial Cells * Leydig Cells * Male * Males * Male Hormone * Male Hormones * Male Hormone Testosterone * Male Hypogonadism * Male Reproductive System * Male Sex Hormones * Men * Organs * Ova * Ovaries * Ovary * Pancreas * Penis * Pituitary * Pituitary Gland * Presence * Primary Hypogonadism * Puberty * Reproductive System * Scrotum * Secondary Hypogonadism * Semen * Seminal Vesicles * Seminiferous Tubule * Seminiferous Tubules * Sertoli Cells * Sperm * Spermatogenesis * Spermatozoa * Sperm Production * Testes Testosterone * Testicle * Testicles * Testicular * Testicular Atrophy * Testicular Failure * Testis * Testosterone * Testosterone Production * Tunica Albuginea * Urethra * Uterus * Vas Deferens

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