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The urethra (pl.: urethras or urethrae) is the tube that connects the urinary bladder to the urinary meatus, [1] [2] through which placental mammals urinate and ejaculate. [3] In non-mammalian vertebrates, the urethra also transports semen but is separate from the urinary tract.
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 urethra of an adult human female is 3-4 cm long. [4] The female urethra is located between the bladder neck to the external urethral orifice and is behind the symphysis pubis. [4] The urethral wall is composed of an inner epithelial lining, a sub-mucosa layer containing vascular supply, a thin fascial layer, and two layers of smooth muscle. [4]
This is an accepted version of this page This is the latest accepted revision, reviewed on 13 November 2024. This article is about the human urinary system. For urinary systems of other vertebrates, see Urinary systems of birds, urinary systems of reptiles, and urinary systems of amphibians. Anatomical system consisting of the kidneys, ureters, urinary bladder, and the urethra Urinary system 1 ...
Female ejaculate may result from sexual activity for some women, especially during orgasm. [3] [4] In addition to PSA and acid phosphatase, Skene's gland fluid contains high concentrations of glucose and fructose. [3] In an amount of a few milliliters, fluid is secreted from these glands when stimulated from inside the vagina.
In placental mammals, females have two genital orifices, the vaginal and urethral openings, while males have one genital orifice in the penis where urine and semen exit the urethra during urination and ejaculation. [14] Male and female genitals have many nerve endings, resulting in pleasurable and highly sensitive touch. [15]
In the presence of a peroxidase enzyme, hydrogen peroxide reacts with a chromogen to induce a color change. [51] The presence of glucose in the urine is known as glycosuria. In people with normal blood sugar levels, the amount of glucose in the urine should be negligible as it is reabsorbed by the renal tubules. [72]
The main male sex organs are the penis and the scrotum, which contains the testicles that produce semen and sperm, which, as part of sexual intercourse, fertilize an ovum in the female's body; the fertilized ovum develops into a fetus, which is later born as an infant. The corresponding system in females is the female reproductive system.