Identify the characteristics and functions of the following: penis‚ testes‚ seminal vesicles‚ prostate gland‚ sperm Penis- external sexual organ of male humans Testes-produce the male reproductive cell Seminal vesicles- secrete seminal fluid and nourish and promote the movement of sperm Prostate gland-controls the release of urine from the bladder Sperm- male reproductive cell 2) Identify the characteristics and functions of the following: vagina‚ ovary
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its so important due to DNA holding the chromosomes that give each human unique physical traits. From there they begin discussing the process of meiosis‚ the process of male sperm and female eggs. They describe sperm being more about quantity‚ whereas the female egg is all about quality. When the male sperm and a female egg meet‚ they create a union of chromosomes‚ taking unique traits from both the male and female‚ creating an individual that has unique traits. The documentary also makes use of
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saclike structures called ovarian follicles. Each follicle consists of animmature egg called an oocyte‚ surrounded by one or more layers of very different cells calledfollicle cells.The ovaries are for oogenesis-the production of eggs (female sex cells) and for hormone production (estrogen and progesterone). As the developing egg begins to ripen or mature‚ follicleenlarges and develops a fluid filled central region. When the egg is matured‚ it is called agraafian follicle‚ and is ready to be ejected from
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start off‚ I would like to explain a few important terms‚ such as cloning & human cloning. Cloning‚ as defined by The Report of the President Council on Bioethics‚ is a form of reproduction in which offspring result not from the chance union of egg & sperm (sexual reproduction)‚ but from the deliberate
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Contraceptive By Rina Rusi Human Sexuality Prof. Elona Gjebrea UNYT Contraception is a deliberate prevention of pregnancy using any of several methods ranging from natural to scientific ones. There are a variety of methods available in accordance to its nature of use. Some methods provide short term birth control facility whereas some other provides permanent or long term birth control facility. The following paper discusses some of the most popular reversible and irreversible methods
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In the alternation of generations life cycle of plants‚ gametes are produced by the gametophyte. homospores. fruit. sporangia. strobili. Characteristics of eudicots include all EXCEPT two cotyledons. woody or herbaceous plants. leaves with netted veins. vascular bundles arranged irregularly in the stem. flower parts in fours and fives. Which plant structure is not found in the lycophytes? microphylls microspores archegonia rhizome Gymnosperm are characterized by producing "naked seeds". Which
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colour eyes would you have? Brown.(The same argument works for green eyes as well.) Another common genetic process that could be responsible for brown eyes from blue-eyed parents is called recombination. When eggs and sperm are made‚ only one of a pair of chromosomes gets put into an egg or sperm. Before this happens‚ there is a bunch of DNA swapping that goes on between the pair of chromosomes. Sometimes when the DNA is swapped or recombined‚
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Background: As members of the class Amphibia‚ frogs may live some of their adult lives on land‚ but they must return to water to reproduce. Eggs are laid and fertilized in water. On the outside of the frog’s head are two external nares‚ or nostrils; two tympani‚ or eardrums; and two eyes‚ each of which has three lids. The third lid‚ called the nictitating membrane‚ is transparent. Inside the mouth are two internal nares‚ or openings into the nostrils; two vomerine teeth in the middle of the roof
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* Charles Darwin Origin of species by natural selection Theory of natural selection 1. Over production More offspring are produced than can survive 2. Variation There are differences in the traits of these organisms 3. Competition 4. Best adapted survive select agent 5. Reproduce Pass on desirable traits to the next generation Organisms rarely have mutations that can allow the to better adapt to there envirironment. I. Evidence for evolution A. Fossils Remnants of organisms that
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which the human male anatomy produces sperm cells. In the male body‚ follicle-stimulating hormones‚ or FSH‚ and leutinizing hormones‚ or LH‚ are very important in the process of spermatogenesis. These hormones control sperm reproduction. The production of the hormones testosterone and androgens are stimulated by the leutinizing hormones. During this process‚ the follicle-stimulating hormones motivate the testes to produce sperm. The development of the sperm takes place in twisted tubules called
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