"Sperm and egg donation" Essays and Research Papers

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    Sperm Essay

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    Sperm Cells Reproduction is the hallmark of life. All species reproduce to continue the survival of their kind. Though the process of reproduction varies slightly through mammals‚ the basic sex cells (gametes) are more or less the same. The male gamete is also known as the sperm cell‚ and the female the ovum. The process the sperm and ovum undergo to create life is both fascinating and detailed. The sperm is produced in the testes. This specialized cell develops through several stages. In the first

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    Sperm Banks

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    Sperm Banks Approximately five thousand births a year are the product of donor children in the United States. There are fifteen sperm banks in the United States and close to fifteen hundred donors. Sperm banks allow millions of couples to start a family‚ but should not be allowed due to the number of problems they can cause. Genetic defects‚ unknown relative production‚ lack of diversity in the breeding pool‚ psychological issues within the family‚ and cost are some of the main problems that arise

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    Sperm Whale

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    Sperm whale can be a good symbol of WWF.Sperm whale is very special‚ because of ambergris. Ambergris is a solid‚ waxy‚ flammable substance of a dull grey or blackish color produced in the digestive system of sperm whale. When initially expelled by or removed from the whale‚ The fatty precursor of ambergris is pale white in color (sometimes streaked with black)‚ soft‚ with a strong fecal smell. Ambergris is one of the most popular substances in the world. Nowadays‚ gold just is $30/g

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    Fertility and Sperm

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    a relationship if there is a new life that will be formed. Several factors may contribute to the hindrances in the formation of new life especially to man because male (sperm) gamete is the one responsible to initiate fertilization‚ the union of male (sperm) and female (ovum) gametes. These may include low sperm counts‚ poor sperm quality‚ anatomical problems and hormonal imbalances. These factors were also described under male infertility which leads to inability to produce offspring. Pre-fabricated

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    Egg Bouncy Egg

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    make an egg bounce? Well the answer is yes‚ you make an egg bounce by using just a few steps. You can make this even more fun by doing this with a couple of friends. First you will need an egg. Then get a bowl. Also you will need vinegar. After you have all those here is what you will need to do. Boil the egg or eggs that you have. After you boil the egg let it set for at least an hour. Then set the egg in a bowl. When you have all that done just put vinegar in the bowl with the hard boiled egg ( How

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    Sperm Quiz

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    1.|This structure protects and regulates the temperature of the testes| A)|Dartos muscle| B)|Cremaster muscle| C)|Tunica albuginea| D)|Scrotum| E)|Tunica vaginalis| Ans:|D| |Link to: 25.1 The scrotum| 2.|This structure is the site of sperm production.| A)|Vas deferens| B)|Seminiferous tubules| C)|Albuginea| D)|Epididymis| E)|Raphe| Ans:|B| |Link to: 25.1 The scrotum| 3.|How many seminiferous tubules are found in the lobules?| A)|1-3| B)|50-100| C)|200-300| D)|500 or

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    The Sperm Journey

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    testicles made special reproductive cells called sperm. Once these cells were made‚ they would wait to be released from the testicles. Sometimes‚ they would wait so long that they dissolved. Other times‚ they would be released from the testicles‚ make a journey through the male reproductive system‚ and leave the male’s body. When the sperm leave the penis‚ it is called ejaculation. On the day in question‚ it just so happened that the sperm got to be released from the body. First‚ the

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    Eggs

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    EGGS Eggs are laid by females of many different species‚ including birds‚ reptiles‚ amphibians‚ and fish‚ and have been eaten by mankind for thousands of years.[1] Bird and reptile eggs consist of a protective eggshell‚ albumen (egg white)‚ and vitellus (egg yolk)‚ contained within various thin membranes. Popular choices for egg consumption are chicken‚ duck‚ quail‚ roe‚ and caviar‚ but the egg most often consumed by humans is the chicken egg‚ by a wide margin. Egg yolks and whole eggs store

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    Eggs

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    DEFINITION OF EGGS A structure which the females of certain animal species lay as a means of reproduction‚ it contains a fertilized zygote and nutrition in the form of yolk for the developing offspring. Sometimes it contains other substances (e.g.‚ the white of a hen ’s egg)‚ sometimes surrounded by a protective outer shell. Animal reproductive body consisting of an ovum or embryo together with nutritive and protective envelopes especially the thin-shelled reproductive body laid by female

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    The Great Sperm Race

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    The Great Sperm Race This documentary retraces the journey of conception scaled up to human size‚ from the sperm production to the fertilization of the egg. There are over 250 million human sperm cells in the testicles waiting for the muscle contractions to expel them through the urethra (ejaculation)‚ but only a few thousands will enter the fallopian tubes‚ and only one will get to fertilize the egg in the woman’s body. In the documentary‚ Dr. Allan Pacey compares the excursion of sperm as a war

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