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Topic: Reproductive system


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In the News (Sat 20 Jul 19)

  
  reproductive system. The Columbia Encyclopedia, Sixth Edition. 2001-05
In the human female reproductive system, ova are produced in the ovaries, two small organs set in the pelvic cavity below and to either side of the navel.
In the male reproductive system sperm are produced in the seminiferous tubules of the testes, two organs contained in the scrotum, an external sac in the groin.
Disorders that may affect the proper functioning of the reproductive system include abnormal hormone secretion, sexually transmitted diseases, and the presence of cancerous tissue in the region.
www.bartleby.com /65/re/reprosys.html   (703 words)

  
 The Reproductive System - Design, Workings, Ailments, Taking care
The main functions of the female reproductive system are to produce ova, receive sperm from the male penis, house and provide nutrients to the developing embryo and fetus, give birth, and produce milk to feed offspring.
The activities of both reproductive systems are controlled by hormones (chemicals produced by the body that affect various bodily processes) released from the pituitary gland, which is located at the base of the brain behind the nose, and from the gonads in each system.
The pills contain hormones that are released into a woman's system on a regular basis to prevent pregnancy, either by inhibiting ovulation, preventing implantation of a fertilized egg, or by thickening the secretions throughout a woman's reproductive system so that her partner's sperm has less of a chance to meet her egg.
www.faqs.org /health/Body-by-Design-V2/The-Reproductive-System.html   (9604 words)

  
  Reproductive System - ninemsn Encarta
Reproductive System, term applied to the group of organs necessary for or accessory to the reproductive processes.
The basic units of sexual reproduction are the male and female germ cells.
In invertebrates, the primordial germ cells congregate in the body cavity or in a section of the circulatory system; in vertebrates, these cells are located in organs that adjoin the excretory system.
au.encarta.msn.com /encyclopedia_761553537/Reproductive_System.html   (1339 words)

  
 Male Reproductive System
Reproduction - the process by which organisms make more organisms like themselves - is one of the things that sets living things apart from nonliving things.
Both the male and female reproductive systems are essential for reproduction.
The urethra is also part of the urinary system because it is also the channel through which urine passes as it leaves the bladder and exits the body.
www.kidshealth.org /parent/general/body_basics/male_reproductive.html   (2132 words)

  
 Reproductive System - MSN Encarta
Reproductive System, term applied to the group of plant or animal organs that are necessary for or that are accessory to the reproductive processes (see Reproduction).
The basic units of sexual reproduction are the male and female germ cells; this article deals with the organs within which the germ cells of animals mature and are stored, the organs through which they are transported in the process of producing a new individual, and accessory glandular organs.
In the process of developing into mature reproductive cells or gametes, the germ cells undergo a special type of cell division, known as meiosis, which halves the number of chromosomes they carry.
encarta.msn.com /encyclopedia_761553537/Reproductive_System.html   (1422 words)

  
 reproductive system - HighBeam Encyclopedia   (Site not responding. Last check: 2007-11-02)
In the human female reproductive system, ova are produced in the ovaries, two small organs set in the pelvic cavity below and to either side of the navel.
In the male reproductive system sperm are produced in the seminiferous tubules of the testes, two organs contained in the scrotum, an external sac in the groin.
Disorders that may affect the proper functioning of the reproductive system include abnormal hormone secretion, sexually transmitted diseases, and the presence of cancerous tissue in the region.
www.encyclopedia.com /doc/1E1-reprosys.html   (822 words)

  
 Reproductive System/ Introduction to the Reproductive System
The major function of the reproductive system is to ensure survival of the species.
Other systems in the body, such as the endocrine and urinary systems, work continuously to maintain homeostasis for survival of the individual.
These hormones function in the maturation of the reproductive system, the development of sexual characteristics, and have important roles in regulating the normal physiology of the reproductive system.
training.seer.cancer.gov /module_anatomy/unit12_1_repdt_intro.html   (187 words)

  
 Female Reproductive System
Reproduction — the process by which organisms make more organisms like themselves — is one of the things that set living things apart from nonliving matter.
A female's internal reproductive organs are the vagina, uterus, fallopian tubes, and ovaries.
If you think you have symptoms of a problem with your reproductive system or if you have questions about your growth and development, talk to your parent or doctor — many problems with the female reproductive system can be treated.
www.kidshealth.org /teen/sexual_health/girls/female_repro.html   (2683 words)

  
 the REPRODUCTIVe system
Sexual reproduction offers the benefit of generating genetic variation among offspring, which enhances the chances of the population's survival.
Reproductive system organs and kidneys form from mesoderm.
Maternal and embryonic structures interlock to form the placenta, the nourishing boundary between the mother's and embryo's systems.
www.emc.maricopa.edu /faculty/farabee/BIOBK/BioBookREPROD.html   (3022 words)

  
 Female Reproductive System
Reproduction — the process by which organisms make more organisms like themselves — is one of the things that set living things apart from nonliving matter.
A female's internal reproductive organs are the vagina, uterus, fallopian tubes, and ovaries.
If you think you have symptoms of a problem with your reproductive system or if you have questions about your growth and development, talk to your parent or doctor — many problems with the female reproductive system can be treated.
kidshealth.org /teen/sexual_health/girls/female_repro.html   (2694 words)

  
 Reproductive System - MSN Encarta
External reproductive organs used by animals to facilitate internal fertilization are known as genitals or genitalia.
Among the glands accessory to the reproductive process are those that provide a fluid medium in which the spermatozoa may live, those that produce mucus which reduces friction during copulation, those that emit alluring odors to members of the opposite sex, and those that secrete nourishment for the ova, the embryos, and the newborn young.
Female egg-laying animals have albumen glands, which coat the zygote with nutrient albumen before the egg is laid, and nidamental glands, which surround the zygote and albumen with a leathery or calcareous shell.
encarta.msn.com /encyclopedia_761553537_2/Reproductive_System.html   (1180 words)

  
 The Reproductive System
In the reproductive process, the vagina functions as a two-way street, accepting the penis and sperm during intercourse and roughly nine months later, serving as the avenue of birth through which the new baby enters the world.
During the course of an average reproductive lifespan, roughly 300 mature eggs are produced for potential conception.
The egg cells remain inactive until puberty, when the reproductive system is activated by a cascade of substances called sex hormones.
www.healthsquare.com /fgwh/wh1ch17.htm   (1579 words)

  
 Reproductive System
Animals’ reproductive systems can be divided into the internal reproductive organs and the external genitalia.
Since sperm and eggs are designed to be in a watery environment, aquatic animals can make use of the water in which they live, but terrestrial animals must, in some way, provide the wet environment neeeded for the sperm to swim to the egg.
In internal fertilization, the eggs are fertilized within the reproductive tract of the female, and then are covered with eggshells and/or remain within the body of the female during their development.
biology.clc.uc.edu /courses/bio105/reproduc.htm   (2386 words)

  
 Know your reproductive system
Reproduction is one of the most important and fundamental properties of living organisms by which every kind of living organism multiplies to form new individuals of it’s own kind.
The male reproductive system of a man consists of a pair of testes, ducts, accessory glands and a penis.
The female reproductive system consists of two ovaries (produce ova and female hormones), Fallopian tubes, uterus (muscular organ which supports the fetus during it’s 40 week gestation period before birth), vagina and external genitalia.
medindia.net /know_ur_body/reproductive.asp   (396 words)

  
 Reproductive System
The function of the reproductive system is to produce offspring.
Both male and female reproductive systems have gonads or sex glands, ducts to carry sex cells and secretions, and accessory organs.
The male reproductive system is a complex system of glands and tiny tubes.
www.lcsc.edu /healthocc/enable03/naughty_bits/030801.htm   (2105 words)

  
 Female Reproductive System Information on Medicinenet.com
In addition, the female reproductive system produces female sex hormones that maintain the reproductive cycle.
During menopause the female reproductive system gradually stops making the female hormones necessary for the reproductive cycle to work.
The function of the external female reproductive structures (the genital) is twofold: To enable sperm to enter the body and to protect the internal genital organs from infectious organisms.
www.medicinenet.com /female_reproductive_system/article.htm   (715 words)

  
 Male reproductive system (human) Summary
Human reproduction depends on the integrated action of hormones, the nervous system, and the reproductive system.
Male duct system arises from the mesonephric (Wolffian) ducts, a proliferation from the primitive kidney that serves as excretory duct, and is under hormonal control.
The human male reproductive system is a series of organs located outside of the body and around the pelvic region of a male.
www.bookrags.com /Male_reproductive_system_(human)   (1948 words)

  
 The Male Reproductive System
The external structures of the male reproductive system are the penis, the scrotum and the testicles.
The entire male reproductive system is dependent on hormones, which are chemicals that stimulate or regulate the activity of cells or organs.
The primary hormones involved in the functioning of the male reproductive system are follicle-stimulating hormone (FSH), luteinizing hormone (LH) and testosterone.
www.cchs.net /health/health-info/docs/2300/2376.asp?index=9117   (1223 words)

  
 Reproductive System Information
Sexual reproduction is the process of producing offspring for the survival of the species, and passing on hereditary traits from one generation to the next.
The male and female reproductive systems contribute to the events leading to fertilization.
The system structures are the ovary, uterine tubes, uterus, vagina, vulva, and mammary glands.
www.besthealth.com /besthealth/bodyguide/reftext/html/repr_sys_fin.html   (1986 words)

  
 Reproductive System
The female reproductive system consists of the fallopian tube, ovum,ovary, uterus, cervix and vagina.
Two weeks, on the average, after ovulation, if the egg is not fertilized, it dies and the blood rich cells of the membrane of the uterus and the microscopic unfertilized ovum pass through the uterus out through the vagina in a process called menstruation..
The male reproductive system consists of the urethra, prostrate gland, testicles, scrotum, vas deferens, seminal vesicle, and penis.
library.thinkquest.org /2935/Natures_Best/Nat_Best_Low_Level/Reproductive_page.L.html   (1785 words)

  
 Sexual Health: Your Guide to the Male Reproductive System
Unlike the female reproductive system, most of the male reproductive system is located outside of the body.
The entire male reproductive system is dependent on hormones, which are chemicals that regulate the activity of many different types of cells or organs.
The primary hormones involved in the male reproductive system are follicle-stimulating hormone, luteinizing hormone, and testosterone.
www.webmd.com /sex-relationships/guide/male-reproductive-system   (1023 words)

  
 Reproductive Health |
Reproductive health is defined as a state of physical, mental, and social well-being in all matters relating to the reproductive system, at all stages of life.
Good reproductive health implies that people are able to have a satisfying and safe sex life, the capability to reproduce and the freedom to decide if, when, and how often to do so.
Reproductive Health's articles are archived in PubMed Central, the US National Library of Medicine's full-text repository of life science literature, and also in repositories at the University of Potsdam in Germany, at INIST in France and in e-Depot, the National Library of the Netherlands' digital archive of all electronic publications.
www.reproductive-health-journal.com /info/about   (1038 words)

  
 Anatomy of the Urinary Tract and Male Reproductive System - urologychannel
Anatomy of the Urinary Tract and Male Reproductive System - urologychannel
The male reproductive system is made up of the penis, testicles, epididymes, vas deferens, prostate, and seminal vesicles.
The internal structure of the penis consists of two cylinder-shaped vascular tissue bodies (corpora cavernosa); the urethra (tube for expelling urine and ejaculate); erectile tissue surrounding the urethra; two main arteries; and several veins and nerves.
www.urologychannel.com /anatomy.shtml   (999 words)

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