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The prostate produces and contains fluid that forms part of semen, the substance emitted during ejaculation as part of the male sexual response. This prostatic fluid is slightly alkaline, milky or white in appearance. The alkalinity of semen helps neutralize the acidity of the vaginal tract, prolonging the lifespan of sperm.
The theory holds that the fraternal birth order effect is a result of a maternal immune response that is produced towards a factor of male development over several male pregnancies. [9] Bogaert's hypothesis argues that "the target of the immune response may be male specific molecules on the surface of male fetal brain cells (e.g., including ...
Illustration of fundal height at various points during pregnancy. Some degree of weight gain is expected during pregnancy. The enlarging uterus, growing fetus, placenta, amniotic fluid, normal increase in body fat, and increase in water retention all contribute weight gain during pregnancy. The amount of weight gain can vary from 5 pounds (2.3 ...
The prostate is a walnut-sized gland below the bladder, above the penis, and in front of the rectum. Its primary function is to create prostate fluid, which is a component of semen.
Systematic studies of prostaglandins began in 1930, when Kurzrock and Lieb found that human seminal fluid caused either stimulation or relaxation of strips of isolated human uterus. They noted that uteri from patients who had gone through successful pregnancies responded to the fluid with relaxation, while uteri from sterile women responded ...
Prostaglandin E 2 (PGE 2), also known as dinoprostone, is a naturally occurring prostaglandin with oxytocic properties that is used as a medication. [2] [3] [4] Dinoprostone is used in labor induction, bleeding after delivery, termination of pregnancy, and in newborn babies to keep the ductus arteriosus open.
Oxytocin is produced in the brain and several reproductive tissues during pregnancy, while the receptors are produced in reproductive tissues. [35] During human parturition, the quantifiable level of blood plasma oxytocin rises: it becomes twice as much during the initial phase of dilation and continues to increase until the second stage of ...
Human sexual reproduction, to produce offspring, begins with fertilization. Successful reproduction typically involves sexual intercourse between a healthy, sexually mature and fertile male and female. [1] During sexual intercourse, sperm cells are ejaculated into the vagina through the penis, resulting in fertilization of an ovum to form a ...