testes definition biology
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Test (biology) Test (biology) Test of a shingle urchin (Colobocentrotus atratus) In biology, a test is the hard shell of some spherical marine animals, notably sea urchins and microorganisms such as testate foraminiferans, radiolarians, and testate amoebae.
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NCI Dictionary of Cancer Terms Testes. The two testes (one of them is called a testis) are contained in a bag of skin called the scrotum. They have two functions: to produce millions of male sex cells called sperm.to make male sex hormones, which affect the way a man's body develops.he two testes (one of them is called a testis) are contained in a bag of skin called the scrotum. They have two functions: to produce millions of male sex cells called sperm.
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- Functions of the Testicle. The testicles (also called testes or gonads) are the male sex glands. They are located behind the penis in a pouch of skin called the scrotum. The testicles produce sperm and testosterone.he testicles (also called testes or gonads) are the male sex glands. They are located behind the penis in a pouch of skin called the scrotum. The testicles produce sperm and testosterone.
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Male Reproductive System (Male Urogenital System) Testes. The testis is a firm, mobile organ lying within the scrotum; the left testis lies slightly lower than the right. The testes are the primary reproductive organs (gonads) in the male, and are responsible for the production of sperm.The testis is covered by a capsule.estes. The testis is a firm, mobile organ lying within the scrotum; the left testis lies slightly lower than the right. The testes are the primary reproductive organs (gonads) in the male, and are responsible for the production of sperm.
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- The structure of a testis can be described as composed of. A) lobules that are filled with seminiferous tubules. B) seminiferous tubules lined with germinal epithelium that produces sex cells. C) seminiferous tubules that unite to form the rete testis, which joins the epididymis.
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gonad n an ovary or testis, the site of origin of eggs or spermatozoa. gonad. a sex gland; a gamete-producing gland; the ovary in the female and the testis in the male. The ovary produces the ovum and the testis produces the spermatozoon. In addition, the gonads secrete hormones that influence the development of the reproductive organs and the physical traits that differentiate males from females, such as a crest and body form and size (the secondary sex characters). The hormones produced by the ovary include estrogen and progesterone.
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Human Physiology/The male reproductive system Human Physiology/The male reproductive system - Structure. 1  The testes (singular, testis) are located in the scrotum (a sac of skin between the upper thighs). In the male fetus, the testes develop near the kidneys, then descend into the scrotum just before birth. 2  Scrotum. 3  The two testicles are each held in a fleshy sac called the scrotum.
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Testes Give Us Feedback! Testes. The testes (singular: testis), commonly known as the testicles, are a pair of ovoid glandular organs that are central to the function of the male reproductive system. The testes are responsible for the production of sperm cells and the male sex hormone testosterone. The testes produce as many as 12 trillion sperm in a male’s lifetime, about 400 million of which are released in a single ejaculation. Located in the hollow sac of the scrotum, each testis is about 1.5 to 2 inches long along its long axis and around 1 inch in diameter.
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Testicle Testicles are a type of organ called glands. (This makes them part of the body's endocrine system .) The human body has many types of glands. The job of glands within a body is to make chemical substances, and put them out into the body's system.
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Anatomy of the Male Reproductive System Testes. The 2 testes, also known as testicles, are the male gonads responsible for the production of sperm and testosterone. The testes are ellipsoid glandular organs around 1.5 to 2 inches long and an inch in diameter.
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Testicles: Facts, Function & Diseases The testicles are housed in the scrotum just behind the penis. The testicles are the male gonads — the primary male reproductive organs. They have two, very important functions that are very important to the male reproductive system: they produce gametes, or sperm, and they secrete hormones, primarily testosterone. Anatomy of the testis. Testicles, or testes, are oval-shaped organs located in the scrotum, just behind the penis and right in front of the anus on male humans.
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- The testes are known as gonads. Their female counterpart are the ovaries. In addition to their role in the male reproductive system, the testes also have the distinction of being an endocrine gland because they secrete testosterone—a hormone that is vital to the normal development of male physical characteristics.
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Infertility and Testicular Disorders Disorders of the penis and testes can affect a man's sexual functioning and fertility. The testicles, also called testes, are part of the male reproductive system.
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An Overview of the Testes The testes are known as gonads. Their female counterpart are the ovaries. In addition to their role in the male reproductive system, the testes also have the distinction of being an endocrine gland because they secrete testosterone—a hormone that is vital to the normal development of male physical characteristics.Anatomy of the Testes.n addition to their role in the male reproductive system, the testes also have the distinction of being an endocrine gland because they secrete testosterone—a hormone that is vital to the normal development of male physical characteristics. Anatomy of the Testes.
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Infertility and Testicular Disorders The testicles, also called testes, are part of the male reproductive system. The testicles are two oval organs about the size of large olives. They are located inside the scrotum, the loose sac of skin that hangs behind the penis.he testicles, also called testes, are part of the male reproductive system. The testicles are two oval organs about the size of large olives. They are located inside the scrotum, the loose sac of skin that hangs behind the penis.
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Testicular Disorders The testicles (also called testes) are part of the male reproductive system. The testicles are two oval organs about the size of large olives. They are located inside the scrotum, the loose sac of skin that hangs behind the penis. The testicles make the male hormones, including testosterone, and produce sperm, the male reproductive cells.
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Scrotum Scrotum, in the male reproductive system, a thin external sac of skin that is divided into two compartments; each compartment contains one of the two testes, the glands that produce sperm, and one of the epididymides, where the sperm is stored. The scrotum is a unique anatomical feature of humans and certain other species of land-dwelling mammals.
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RIXIMKA DUMARKA The primary functions of the testes are to produce sperm (spermatogenesis) and to produce androgens, primarily testosterone. Both functions of the testicle are influenced by gonadotropic hormones produced by the anterior pituitary.
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Hormones of the Testes and Ovaries: Functions & Anatomical Features The testes are the male gonads. Like the ovaries, the testes are paired organs, but unlike the ovaries, the testes are found outside the pelvic cavity and are contained in the scrotal sac. The testes are the organs that produce sperm, which is the male reproductive cell. The testes also produce steroid hormones, much like we see from their female counterpart, the ovaries. The male sex hormones are collectively referred to as androgens.
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testis Noun. 1. testis-one of the two male reproductive glands that produce spermatozoa and secrete androgens; she kicked him in the balls and got away. ballock, bollock, testicle, orchis, egg, ball, nut.arteria testicularis, internal spermatic artery, testicular artery-a branch of the aorta supplying the testicles.Latin, witness, testis; see testify .]. Word History: The resemblance between testimony, testify, testis, and testicle shows an etymological relationship, but linguists are not agreed on precisely how English testis came to have its current meaning.
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Testis Testis. The testes (plural) are the most essential organs of the male reproductive system. They are the glands where sperm and testosterone are produced.The testes are contained in the scrotum and are composed of dense connective tissue containing around three hundred internal compartments called lobules.Each of these lobules contains a number of coiled, tiny tubules where the sperm are produced.hey are the glands where sperm and testosterone are produced. The testes are contained in the scrotum and are composed of dense connective tissue containing around three hundred internal compartments called lobules.
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Gonad- Gonad-: The part of the reproductive system that produces and releases eggs (ovary) or sperm (testicle/testis). Source: National Institute of Health. Gonad-: a gland in which gametes (sex cells) are produced. Source: WordNet 2.1.
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Medical Definition of Male gonad Male gonad: A testis, one of a pair of organs located behind the penis in a pouch of skin called the scrotum. The testes produce and store sperm and are also the body's main source of male hormones. These hormones control the development of the reproductive organs and other male characteristics, such as body and facial hair, low voice, and wide shoulders. Last Editorial Review: 5/13/2016.
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gonad noun, Anatomy. 1. a sex gland in which gametes are produced; an ovary or testis. Origin of gonad.
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RIXIMKA DUMARKA The primary functions of the testes are to produce sperm (spermatogenesis) and to produce androgens, primarily testosterone. Both functions of the testicle are influenced by gonadotropic hormones produced by the anterior pituitary. Luteinizing hormone (LH) results in testosterone release.The presence of both testosterone and follicle-stimulating hormone (FSH) is needed to support spermatogenesis.he testicle (from Latin testiculus, diminutive of testis, meaning witness of virility, plural testes) is the male gonad in animals. Like the ovaries to which they are homologous, testes are components of both the reproductive system and the endocrine system.
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Human Reproductive Anatomy and Gametogenesis Diagram the structures of human male reproductive anatomy. The male gonads, or testes, produce sperm within the seminiferous tubules; the sperm are housed here until they are nearly mature, at which point they enter the epidydimis for full maturation.