Search results
Results From The WOW.Com Content Network
Hypospadias is a common malformation in fetal development of the penis in which the urethra does not open from its usual location on the head of the penis. It is the second-most common birth defect of the male reproductive system, affecting about one of every 250 males at birth, [3] although when including milder cases, is found in up to 4% of newborn males. [4]
The urinary meatus [a] (/ m iː ˈ eɪ t ə s /, mee-AY-təs; pl.: meati or meatuses), also known as the external urethral orifice, is the opening of the penis or vulva where urine exits the urethra during urination. It is also where semen exits during male ejaculation, and other fluids during female ejaculation. The meatus has varying degrees ...
The protection provided by the foreskin for the glans penis and meatus has been recognized since 1915. In the absence of the foreskin the meatus is exposed to mechanical and chemical irritation from ammoniacal diaper (nappy) that produces blister formation and ulceration of the urethral opening, which eventually gives rise to meatal stenosis (a narrowing of the opening). [1]
Hypospadias is a developmental disorder where the meatus is positioned wrongly at birth. Hypospadias can also occur iatrogenically by the downward pressure of an indwelling urethral catheter. [47] It is usually corrected by surgery. A micropenis is a very small penis caused by developmental or congenital problems.
Aposthia is a rare congenital condition in humans, in which the foreskin of the penis is missing. [1]: 37–39 Toward the end of the nineteenth century, E. S. Talbot claimed that aposthia among Jews was evidence for the now-discredited Lamarckian theory of evolution. [2]
Epispadias is a birth defect in which the urethra fails to fully develop, resulting in urine leaving the body from an abnormal site. [1] In males, this may be an opening on the upper aspect of the penis, [2] and in females when the urethra develops too far anteriorly.
Both substances exit through the meatus. When a male becomes sexually aroused, erection occurs because sinuses within the erectile tissues of the penis (corpora cavernosa and corpus spongiosum) become filled with blood. The arteries of the penis are dilated while the veins are compressed so that blood flows into the erectile cartilage under ...
The examination includes checking the penis, scrotum, and urethral meatus. [1] A comprehensive assessment of the male genitals assesses the pubic hair based on Sexual Maturity Rating and the size of the testicles and penis. [2] The exam can also be conducted to verify a person's age and biological sex.