Results for: mature sperm
2009-01-23md
2009-11-07 - extension: wmv - size: 146 MB
2009-01-23md
Hosted on: rapidshare.com
3oma sperm
2009-07-24 - extension: rar - parts: 2 - size: 118 MB
3oma sperm
Hosted on: depositfiles.com
Video results for: mature spermMore results from video
RE: ON ABORTION sperm, egg or embryo abortion it's not a question on parts and pieces but a quesiotn on wholes
The question as to (More) abortion it's not a question on parts and pieces but a quesiotn on wholes
The question as to when the physical material dimension of a human being begins via sexual reproduction is strictly a scientific question, and fundamentally should be answered by human embryologists--not by philosophers, bioethicists, theologians, politicians, x-ray technicians, movie stars, or obstetricians and gynecologists. The question as to when a human person begins is a philosophical question. Current discussions on abortion, human embryo research (including cloning, stem cell research, and the formation of mixed-species chimeras), and the use of abortifacients involve specific claims as to when the life of every human being begins. If the "science" used to ground these various discussions is incorrect, then any conclusions will be rendered groundless and invalid. The purpose of this article is to focus primarily on a sampling of the "scientific" myths, and on the objective scientific facts that ought to ground these discussions. At least it will clarify what the actual international consensus of human embryologists is with regard to this relatively simple scientific question. In the final section, I will also address some "scientific" myths that have caused much confusion within the philosophical discussions on "personhood."
When does a human being begin?
Getting a handle on just a few basic human embryological terms accurately can considerably clarify the drastic difference between the "scientific" myths that are currently circulating, and the actual objective scientific facts. This would include such basic terms as: "gametogenesis," "oogenesis," "spermatogenesis," "fertilization," "zygote," "embryo," and "blastocyst." Only brief scientific descriptions will be given here for these terms. Further, more complicated, details can be obtained by investigating any well-established human embryology textbook in the library, such as some of those referenced below. Please note that the scientific facts presented here are not simply a matter of my own opinion. They are direct quotes and references from some of the most highly respected human embryology textbooks, and represent a consensus of human embryologists internationally.
A. Basic human embryological facts
To begin with, scientifically something very radical occurs between the processes of gametogenesis and fertilization--the change from a simple part of one human being (i.e., a sperm) and a simple part of another human being (i.e., an oocyte--usually referred to as an "ovum" or "egg"), which simply possess "human life", to a new, genetically unique, newly existing, individual, whole living human being (a single-cell embryonic human zygote). That is, upon fertilization, parts of human beings have actually been transformed into something very different from what they were before; they have been changed into a single, whole humanbeing. During the process of fertilization, the sperm and the oocyte cease to exist as such, and a new human being is produced.
To understand this, it should be remembered that each kind of living organism has a specific number and quality of chromosomes that are characteristic for each member of a species. (The number can vary only slightly if the organism is to survive.) For example, the characteristic number of chromosomes for a member of the human species is 46 (plus or minus, e.g., in human beings with Down's or Turner's syndromes). Every somatic (or, body) cell in a human being has this characteristic number of chromosomes. Even the early germ cells contain 46 chromosomes; it is only their mature forms - the sex gametes, or sperms and oocytes - which will later contain only 23 chromosomes each.1 Sperms and oocytes are derived from primitive germ cells in the developing fetus by means of the process known as "gametogenesis." Because each germ cell normally has 46 chromosomes, the process of "fertilization" can not take place until the total number of chromosomes in each germ cell are cut in half. This is necessary so that after their fusion at fertilization the characteristic number of chromosomes in a single individual member of the human species (46) can be maintained--otherwise we would end up with a monster of some sort.
To accurately see why a sperm or an oocyte are considered as only possessing human life, and not as living human beings themselves, one needs to look at the basic scientific facts involved in the processes of gametogenesis and of fertilization. It may help to keep in mind that the products of gametogenesis and fertilization are very different. The products of gametogenesis are mature sex gametes with only 23 instead of 46 chromosomes. The product of fertilization is a living human being with 46 chromosomes. Gametogenesis refers to the maturation of germ cells, resulting in gametes. Fertilization refers to the initiation of a new human being.
http://www.lifeissues.net/writers/irv/irv_01lifebegin1.html (Less)
RE: ON ABORTION sperm, egg or embryo abortion it's not a question on parts and pieces but a quesiotn on wholes The question as to (More) abortion it's not a question on parts and pieces but a quesiotn on wholes The question as to when the physical material dimension of a human being begins via sexual reproduction is strictly a scientific question, and fundamentally should be answered by human embryologists--not by philosophers, bioethicists, theologians, politicians, x-ray technicians, movie stars, or obstetricians and gynecologists. The question as to when a human person begins is a philosophical question. Current discussions on abortion, human embryo research (including cloning, stem cell research, and the formation of mixed-species chimeras), and the use of abortifacients involve specific claims as to when the life of every human being begins. If the "science" used to ground these various discussions is incorrect, then any conclusions will be rendered groundless and invalid. The purpose of this article is to focus primarily on a sampling of the "scientific" myths, and on the objective scientific facts that ought to ground these discussions. At least it will clarify what the actual international consensus of human embryologists is with regard to this relatively simple scientific question. In the final section, I will also address some "scientific" myths that have caused much confusion within the philosophical discussions on "personhood." When does a human being begin? Getting a handle on just a few basic human embryological terms accurately can considerably clarify the drastic difference between the "scientific" myths that are currently circulating, and the actual objective scientific facts. This would include such basic terms as: "gametogenesis," "oogenesis," "spermatogenesis," "fertilization," "zygote," "embryo," and "blastocyst." Only brief scientific descriptions will be given here for these terms. Further, more complicated, details can be obtained by investigating any well-established human embryology textbook in the library, such as some of those referenced below. Please note that the scientific facts presented here are not simply a matter of my own opinion. They are direct quotes and references from some of the most highly respected human embryology textbooks, and represent a consensus of human embryologists internationally. A. Basic human embryological facts To begin with, scientifically something very radical occurs between the processes of gametogenesis and fertilization--the change from a simple part of one human being (i.e., a sperm) and a simple part of another human being (i.e., an oocyte--usually referred to as an "ovum" or "egg"), which simply possess "human life", to a new, genetically unique, newly existing, individual, whole living human being (a single-cell embryonic human zygote). That is, upon fertilization, parts of human beings have actually been transformed into something very different from what they were before; they have been changed into a single, whole humanbeing. During the process of fertilization, the sperm and the oocyte cease to exist as such, and a new human being is produced. To understand this, it should be remembered that each kind of living organism has a specific number and quality of chromosomes that are characteristic for each member of a species. (The number can vary only slightly if the organism is to survive.) For example, the characteristic number of chromosomes for a member of the human species is 46 (plus or minus, e.g., in human beings with Down's or Turner's syndromes). Every somatic (or, body) cell in a human being has this characteristic number of chromosomes. Even the early germ cells contain 46 chromosomes; it is only their mature forms - the sex gametes, or sperms and oocytes - which will later contain only 23 chromosomes each.1 Sperms and oocytes are derived from primitive germ cells in the developing fetus by means of the process known as "gametogenesis." Because each germ cell normally has 46 chromosomes, the process of "fertilization" can not take place until the total number of chromosomes in each germ cell are cut in half. This is necessary so that after their fusion at fertilization the characteristic number of chromosomes in a single individual member of the human species (46) can be maintained--otherwise we would end up with a monster of some sort. To accurately see why a sperm or an oocyte are considered as only possessing human life, and not as living human beings themselves, one needs to look at the basic scientific facts involved in the processes of gametogenesis and of fertilization. It may help to keep in mind that the products of gametogenesis and fertilization are very different. The products of gametogenesis are mature sex gametes with only 23 instead of 46 chromosomes. The product of fertilization is a living human being with 46 chromosomes. Gametogenesis refers to the maturation of germ cells, resulting in gametes. Fertilization refers to the initiation of a new human being. http://www.lifeissues.net/writers/irv/irv_01lifebegin1.html (Less)
21
2009-03-10 - extension: rar - size: 79 MB
21
Hosted on: filefactory.com
01
2009-02-28 - extension: wmv - parts: 25 - size: 20 MB
01
Hosted on: rapidshare.com
dejo tscpmfr
2009-02-04 - extension: rar - size: 10 MB
dejo tscpmfr
Hosted on: mihd.net
bonus1
2009-02-28 - extension: mpg - parts: 3 - size: 23 MB
bonus1
Hosted on: rapidshare.com
specjalblow 1
2009-02-28 - extension: flv - parts: 11 - size: 6 MB
specjalblow 1
Hosted on: rapidshare.com
specjalblow 2
2009-02-28 - extension: flv - parts: 10 - size: 19 MB
specjalblow 2
Hosted on: rapidshare.com
htgbbfm 1
2009-02-28 - extension: flv - parts: 19 - size: 5 MB
htgbbfm 1
Hosted on: rapidshare.com
Groups results for: mature sperm Bookmark FilesTube
Link to FilesTube
Show your support by placing a link to filestube.com on your website and favorite forums.