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A 1992 World Health Organization report described normal human semen as having a volume of 2 mL or greater, pH of 7.2 to 8.0, sperm concentration of 20×10 6 spermatozoa/mL or more, sperm count of 40×10 6 spermatozoa per ejaculate or more, and motility of 50% or more with forward progression (categories a and b) of 25% or more with rapid ...
Penile–vaginal intercourse, or vaginal intercourse, is a form of penetrative sexual intercourse in human sexuality, in which an erect penis is inserted into a vagina. [1] Synonyms are: vaginal sex , cohabitation , coitus ( Latin: coitus per vaginam ), (in elegant colloquial language) intimacy , or (poetic) lovemaking .
Semen quality is a measure of ... though only a couple of hundred survive in the acidic environment of the vagina to be candidates for successful ... Bad freezers In ...
“The most common cause of vaginal odor is an imbalance in the normal flora in the vagina,” which causes a fishy odor, irritation, and thin to no vaginal discharge, says Dr. Streicher.
The vagina is normally acidic, so the deposit of pre-ejaculate before the emission of semen may change the vaginal environment to promote sperm survival. [1] Pre-ejaculate also acts as a lubricant during sexual activity , [ 1 ] and plays a role in semen coagulation .
Allergy to sperm or condoms Chemicals found in condoms, spermicide, vaginal lubricants, and moisturizers can irritate the sensitive skin of the vagina and cause burning.
In humans, semen is usually ejaculated into the posterior vaginal fornix in direct contact with cervical mucus, [6] though sperm may swim from other areas of the vagina or vulva to the cervix. The average volume of semen produced at ejaculation is 2 to 5 millilitres (about a teaspoon), [7] containing an average of 182 million sperm. [4]
The majority of people love bringing a lubricant into the bedroom to make sexual activity more enjoyable and reduce pain during vaginal penetration with fingers, a penis or sex toys, says Dr. Ross.