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Navodaya Vidyalaya Samiti – Bhopal Region.
Navodaya Vidyalaya Samiti – Bhopal Region.

... level at the middle of the cycle. Rapid secretion of LH induces ovulation and is followed by luteal phase in which corpus luteum is formed. Menstrual cycles ceases completely around 50 years of age called menopause. Fertilization & Implantation: Fertilization is the process of fusion of a sperm with ...
Development ppt
Development ppt

... Obj. 7: Placentation • The Placenta: a temporary organ that originates from embryonic and maternal tissues –It acts as the respiratory, nutritive, and excretory organ of the fetus ...
Reproducton Development
Reproducton Development

... - keeps sperm 1-2’ below body temperature -muscles keep scrotum at proper distance to maintain optimum sperm temperature ...
Microsoft Word 97
Microsoft Word 97

... In birds and reptiles, close contact between female and male cloaca permit sperm to pass from one to the other. In these individual groups, sperm are used almost immediately for fertilization as they work their way to the oviducts, rather than being stored. In mammals, further developments exist in ...
Role of reproductive hormones
Role of reproductive hormones

... detergents and plastics may reduce sperm counts.  May also be caused by the inability of sperm to swim properly.  Insufficient testosterone. Treatment:  Changes in diet and lifestyle.  If due to lack of testosterone drug therapy may be useful.  IVF  Sperm may be placed directly into fallopian ...
Human Development
Human Development

... Biology 212 Anatomy & Physiology ...
Document
Document

... kidneys maintain water balance / amount of water that the body needs to remove varies from day to day; reason for water variation eg exercise, temperature, humidity; amount of water / fluid drunk / present in body may vary; amount of water lost in sweat / breathing may vary; amount of salt eaten / p ...
Human Growth and Development Powerpoint
Human Growth and Development Powerpoint

... • his tiny heart is already beating • By the 20th day, the foundation for the nervous system is laid down. • WEEK FOUR: By now, blood circulation is wellestablished. The larynx and inner ear are beginning to form, as are the legs and arms. The liver, pancreas, lungs, and stomach are also forming. By ...
Human Reproduction
Human Reproduction

... Prostate gland- surrounds the upper end of male urethra and produces part of the fluid that mixes with the sperm to form semen. Prostate fluid alkaline ,helps to protect sperm from vaginal acids. Scrotum- pouch of loose skin containing the testes. Houses and air-conditions the testicles by moving an ...
Micro Lab Unit 1 Flashcards
Micro Lab Unit 1 Flashcards

... 35) What are the three types of asexual reproduction? 36) What involves the separation of a parent into two or more individuals of the same size? 37) What occurs when a new individual grows out of the body of an existing one as a result of unequal division of the organism? 38) What is the breaking o ...
Lecture
Lecture

... • sperm deposited in or near the female reproductive tract – male copulatory organ deposits sperm – female can have a seminal receptacle for receipt and storage of sperm – then delivers it to the egg when needed – e.g. sharks – modified pelvic fins called claspers that are inserted into the female c ...
Reproduction and Development
Reproduction and Development

... – Resulting zygote starts to divide • After several divisions…ball of cells will implant itself in the lining of the uterus • Within a few days of implantation…the uterus and growing embryo will release hormones that keep the corpus luteum functioning for several weeks – Allows the lining of the ute ...
embryo - Zanichelli online per la scuola
embryo - Zanichelli online per la scuola

... urethra in two steps: Emission—rhythmic contractions move the semen into the urethra at the base of the penis. Ejaculation—contractions by muscles at the base of the penis that force the semen out. Ejaculation is accompanied by feelings of intense ...
kurtis
kurtis

... favorable variations survive and produce more offspring than less well-adapted organisms. Asexual reproduction results in identical offspring. The offspring have the same qualities as the parent. Some qualities may be beneficial while others may not. Some organisms try to ensure survival of the spec ...
Ovary
Ovary

... 8. During GESTATION (time in the womb), the fetus is protected from shock by the fluid-filled AMNION. 9. As the fetus grows larger, it may be exposed to many environmental factors that DIFFUSE across the placenta ...
Human Reproduction Reproduction
Human Reproduction Reproduction

... characteristics that may increase their chance of survival. In advanced forms of reproduction, there are 2 types of gametes (sex cells). These are sperm, produced by the male, and eggs (ovum), produced by the female. Each of these gametes contains one half of the full complement of DNA required in a ...
Human Reproduction
Human Reproduction

... with a female sex cell, called an egg, during a process called fertilization (fur-tuh-lih-ZAY-shun). These sex cells contained half of the normal amount of information in a human body cell, so that when they combined, the full amount of information was present in the offspring. The new cell formed b ...
Human Reproduction
Human Reproduction

... their genetic information from one parent and half of their genetic information from the other parent. This results in a unique individual, different from either parent and their other offspring. The organs that function together in sexual reproduction are called the reproductive system. Other speci ...
Human Biology 4.3
Human Biology 4.3

... Look alike Have identical blood types Form early in pregnancy Approximately 1 in 29 births is a set of identical twins ...
Sexual Reproduction
Sexual Reproduction

... - Differentiation occurs  cells become different - take on their own identity (hair cell, skin cell, etc.) ...
Human Development
Human Development

... One of the best ways to understand the structure of the adult human body is to understand how it developed. ...
Human Reproduction
Human Reproduction

... (eggs) and produce the hormone estrogen. Ovaries are located in a female’s abdomen as shown in the image below. Once a male reaches puberty, the reproductive system will produce sperm almost continuously, until the end of his life. Females, however, are born with all of the potential eggs they will ...
repo. bookwork Key
repo. bookwork Key

... Hypertrophy, which surrounds the urethra, constricts the urethral passageway, thus inhibiting the passage of semen. ...
repo. bookwork Key
repo. bookwork Key

... Hypertrophy, which surrounds the urethra, constricts the urethral passageway, thus inhibiting the passage of semen. ...
Annelida
Annelida

... Sperm exchange between mating earthworms: • Sperm from testis stored in, and later released from, seminal vesicles • Sperm from other worm stored in seminal receptacles • After separation, sperm from other worm used to fertilize eggs from the ovary ...
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FNA Mapping

Fine needle aspiration (FNA) cytology has been used to examine pathological human tissue from various organs for over 100 years. As an alternative to open testicular biopsy for the last 40 years, it has helped to characterize states of human male infertility due to defective spermatogenesis. Although recognized as a reliable, and informative technique, testis FNA has not been widely used in U.S. to evaluate male infertility. Recently however, testicular FNA has gained popularity as both a diagnostic and therapeutic tool for the management of clinical male infertility for several reasons:The testis is an ideal organ for evaluation by FNA because of its uniform cellularity and easy accessibility.The trend toward minimally invasive procedures and cost-containment views FNA favorably compared to surgical testis biopsy.The realization that the specific histologic abnormality observed on testis biopsy has no definite correlation to either the etiology of infertility or to the ability to find sperm for assisted reproduction.Assisted reproduction has undergone dramatic advances such that testis sperm are routinely used for biological pregnancies, thus fueling the development of novel FNA techniques to both locate and procure sperm.For these reasons, there has been a resurgence of FNA as an important, minimally invasive tool for the evaluation and management of male infertility.
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