male genital organs
... and the space between both layers changes to the slit-like cavity (cavum serosum scroti). The stalk of the processus vaginalis normally obliterates shortly after birth to form lig. vaginale. The gubernaculum changes to the lig. scrotale. Retentio testis is an abnormality when the testis is retained ...
... and the space between both layers changes to the slit-like cavity (cavum serosum scroti). The stalk of the processus vaginalis normally obliterates shortly after birth to form lig. vaginale. The gubernaculum changes to the lig. scrotale. Retentio testis is an abnormality when the testis is retained ...
Sertoli cells
... that appears to have ocurred over the past 60 years is a fall in sperm counts of around 40-50%. These developmental disorders are attributed to feminising factors affecting prenatal development. Feminising factors: ● exogenous estrogens produced by the pharmaceutical industry ● substances with estro ...
... that appears to have ocurred over the past 60 years is a fall in sperm counts of around 40-50%. These developmental disorders are attributed to feminising factors affecting prenatal development. Feminising factors: ● exogenous estrogens produced by the pharmaceutical industry ● substances with estro ...
andrology - Assiut University
... Spermatogeneses occurred in waves within the seminiferous tubules It is important to understand that some portion of the seminferous tubule is always releasing sperm and don't clog the pathway . The seminiferous epithelial cycles varied between animals and control the rate of sperm production Its le ...
... Spermatogeneses occurred in waves within the seminiferous tubules It is important to understand that some portion of the seminferous tubule is always releasing sperm and don't clog the pathway . The seminiferous epithelial cycles varied between animals and control the rate of sperm production Its le ...
1) Write on the physiology of erection
... vasodilatation and relaxation of penile corporeal smooth muscle. Oxygen levels are important in NO-mediated responses, which vary widely from penile flaccidity to erection. Decreasing oxygen tension levels progressively inhibit NO responses, and elevation of oxygen to normal levels restores NO-depe ...
... vasodilatation and relaxation of penile corporeal smooth muscle. Oxygen levels are important in NO-mediated responses, which vary widely from penile flaccidity to erection. Decreasing oxygen tension levels progressively inhibit NO responses, and elevation of oxygen to normal levels restores NO-depe ...
Male Sexual Anatomy and Physiology
... Stretching with penile weights. This technique is very likely to cause permanent penile damage. Vacuum pumps. Because pumps draw blood into the penis and make it swell, they're useful in the treatment of impotence (erectile dysfunction). This may create an illusion of a larger penis, but results are ...
... Stretching with penile weights. This technique is very likely to cause permanent penile damage. Vacuum pumps. Because pumps draw blood into the penis and make it swell, they're useful in the treatment of impotence (erectile dysfunction). This may create an illusion of a larger penis, but results are ...
Chapter 6 Sexual Arousal and Response
... – Secretes fluid before ejaculations – May contain active, healthy sperm ...
... – Secretes fluid before ejaculations – May contain active, healthy sperm ...
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... a tube leading from the bladder that carries urine through the penis to the opening at the tip of the glans. Semen also passes through this tube. ...
... a tube leading from the bladder that carries urine through the penis to the opening at the tip of the glans. Semen also passes through this tube. ...
Human penis size
The most accurate measurement of the human penis comes from several measurements at different times since there is natural minor variability in size due to arousal level, time of day, room temperature, frequency of sexual activity, and reliability of measurement. When compared to other primates, including large primates such as the gorilla, the human penis is thickest, both in absolute terms and relative to the rest of the body.Measurements vary, with studies that rely on self-measurement reporting a significantly higher average than those with staff measuring. As of 2015, a systematic review of the best research to date on the topic has concluded that the mean length of an erect human penis is approximately 13.12 ± 1.66 cm (5.17 ± 0.65 in). Flaccid penis length is a poor estimate of erect length.Most of human penis growth happens between infancy and the age of five, and between about one year after the onset of puberty and, at latest, approximately 17 years of age.A statistically significant correlation between penis size and the size of other body parts has not been found in research. Some environmental factors in addition to genetic, such as the presence of endocrine disruptors, can affect penis growth. An adult penis with an erect length of less than 7 cm (2.8 in), but otherwise formed normally, is referred to in medicine as a micropenis.Penis size is positively correlated with increasing testosterone levels during puberty. However, after puberty, administration of testosterone is not capable of affecting penis size, and androgen deficiency in adult men only results in a small decrease in size. Growth hormone (GH) and insulin-like growth factor 1 (IGF-1) are also involved in penis size, with deficiency (e.g., that observed in growth hormone deficiency or Laron syndrome) at critical developmental stages having the potential to result in micropenis (very small penis size).