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Large intestine, 14. Pelvis. The bladder is a hollow organ in humans and other vertebrates that stores urine from the kidneys. In placental mammals, urine enters the bladder via the ureters and exits via the urethra during urination. [1][2] In humans, the bladder is a distensible organ that sits on the pelvic floor.
The purpose of the urinary system is to eliminate waste from the body, regulate blood volume and blood pressure, control levels of electrolytes and metabolites, and regulate blood pH. The urinary tract is the body's drainage system for the eventual removal of urine. [1] The kidneys have an extensive blood supply via the renal arteries which ...
The nose is the first organ of the upper respiratory tract in the respiratory system. Its main respiratory function is the supply and conditioning, by warming, moisturising and filtering of particulates of inhaled air. [ 23 ] Nasal hair in the nostrils traps large particles preventing their entry into the lungs.
Urine is released through the urethra and exits the penis or vulva through the urinary meatus in placental mammals, [ 1 ][ 2 ]: 38, 364 but is released through the cloaca in other vertebrates. [ 3 ][ 1 ] It is the urinary system 's form of excretion. It is also known medically as micturition, [ 4 ]voiding, uresis, or, rarely, emiction, and ...
The urinary meatus[a] (/ miːˈeɪtəs /, mee-AY-təs; pl.: meatus or meatuses), also known as the external urethral orifice, is the opening of the urethra where urine exits the penis or vulva during urination. It is where semen exits the penis during ejaculation. The meatus has varying degrees of sensitivity to touch.
The urinary meatus, for urination in males and females and ejaculation in males. In females, the vagina, for menstruation, copulation and birth. The nipple orifices. Other animals may have some other body orifices: The cloaca in birds, reptiles, amphibians, and a few mammals. The siphon in mollusks, arthropods, and some other animals.
The vulval vestibule (also known as the vulvar vestibule or vestibule of vagina) is the part of the vulva between the labia minora. At the innermost part are the vaginal introitus and urinary meatus. The Bartholin's and Skene's glands each have two openings to the vestibule on the inside. The outer edge, marked by a coloration difference in the ...
Erectile tissue is tissue in the body with numerous vascular spaces, or cavernous tissue, that may become engorged with blood. [1][2] However, tissue that is devoid of or otherwise lacking erectile tissue (such as the labia minora, vestibule, vagina and urethra) may also be described as engorging with blood, often with regard to sexual arousal.
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