Homologous organ to vagina in males

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In simple terms, reproduction is the process by which organisms create descendants. This miracle is a characteristic that all living things have in common and sets them apart from nonliving things. But even though the reproductive system is essential to keeping a species alive, it is not essential to keeping an individual alive.

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The male reproductive system includes external penis, scrotum, epididymus, and testes and internal accessory organs. These external structures are the penis, scrotum, epididymis, and testes. Male Reproductive System : Lateral view of male reproductive system with organs labeled.

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Adult external genitalia ExG are the endpoints of normal sex differentiation. Detailed morphometric analysis and comparison of adult mouse ExG has revealed 10 homologous features distinguishing the penis and clitoris that define masculine vs. These features have enabled the construction of a simple metric to evaluate various intersex conditions in mutant or hormonally manipulated mice.

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As animals became more complex, specific organs and organ systems developed to support specific functions for the organism. The reproductive structures that evolved in land animals allow males and females to mate, fertilize internally, and support the growth and development of offspring. The reproductive tissues of male and female humans develop similarly in utero until a low level of the hormone testosterone is released from male gonads. Testosterone causes the undeveloped tissues to differentiate into male sexual organs.

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This list of related male and female reproductive organs shows how the male and female reproductive organs and the development of the reproductive system are related, sharing a common developmental path. This makes them biological homologues. These organs differentiate into the respective sex organs in males and females.

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The reproductive system is a collection of internal organs and external genitalia that work together to generate new life. The female reproductive system is made up of a number of different parts, most notably the vagina, uterus and egg-producing ovaries. The male reproductive system consists of the penis, scrotum and testicles, as well as various internal accessory organs, such as the prostate gland and the seminal vesicles, which produce most of the fluid that makes up the ejaculate.

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Physicians throughout time have analyzed and compared the male and female reproductive organs. From Galen's one-sex model of the reproductive system to today's diverging fields of study in female and male anatomy, the concepts and images of the reproductive organs of both sexes have evolved with medicine and technology. From antiquity through the Renaissance, most physicians portrayed the female and male reproductive organs as counterparts of each other and wrote of homologous anatomical structures.

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The reproductive system is necessary for the production of new living organisms. The reproductive system is comprised of male and female reproductive organs and structures. Both male and female reproductive organs have internal and external structures. Reproductive organs are considered to be either primary or secondary organs.

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In simple terms, reproduction is the process by which organisms create descendants. This miracle is a characteristic that all living things have in common and sets them apart from nonliving things. But even though the reproductive system is essential to keeping a species alive, it is not essential to keeping an individual alive.

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Image from Human Anatomy Atlas. The battle of the sexes. Men vs.

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