filtration
The exit speed of urine can vary, but it typically ranges from about 10 to 20 miles per hour (16 to 32 kilometers per hour) when expelled from the bladder. Factors such as bladder pressure, urethral anatomy, and individual physiology can influence this speed. However, this is a general estimate and may differ from person to person.
The ureters are the tubes in the human anatomy that conduct urine from the kidneys to the bladder. A calculus is a stone. Hence, a calculus of the ureter is a kidney stone that has formed in a ureter. Please see the link.
During menstruation as the blood leaves the vagina it can remain around the vaginal opening and the vulva, thus it doesn't drip down onto the pad and instead when you urinate the urine washes the blood from the vulva and into the toilet.
Countercurrent exchange in the kidney occurs in the nephron, particularly in the loop of Henle and the vasa recta. As filtrate descends through the loop of Henle, water is reabsorbed, concentrating the filtrate, while sodium and chloride ions are actively transported out as it ascends, diluting the filtrate. This creates a concentration gradient in the surrounding interstitial fluid. The vasa recta, which are the blood vessels that supply the kidney, run parallel to the loop of Henle and facilitate the exchange of water and solutes, maintaining the osmotic gradient essential for urine concentration.
The time it takes for THC, the active compound in cannabis, to leave your system can vary based on several factors, including frequency of use, metabolism, body fat, and hydration levels. Generally, for occasional users, THC may be detectable in urine for about 1-3 days, while regular users might have detectable levels for up to 30 days or longer. Blood and saliva tests typically show THC for a shorter duration, usually within a few hours to a few days. Individual results can vary widely, so it's important to consider personal factors.
Urine formation begins in the kidneys, where blood is filtered to remove waste products, excess ions, and water. This process occurs in the renal corpuscles within the nephrons of the kidney.
The completion of urine formation occurs in the kidneys, specifically within the nephrons. Nephrons filter blood to remove waste and excess substances, producing urine. After formation, urine is collected in the renal pelvis, then transported to the bladder via the ureters for storage before excretion.
The Harmones which participate in the formation of urine are ANTI DIRUETIC HARMONE(ADH)
The nephron is the anatomically functional unit responsible for urine formation in the kidneys. It consists of a glomerulus, proximal tubule, loop of Henle, distal tubule, and collecting duct that work together to filter blood, reabsorb essential substances, and excrete waste products to form urine.
Many structures within the kidneys rely on fluid pressure. The glomerus, Bowman's capsule, and tubules are all parts of the kidney that rely on fluid pressure to move the urine components along.
you can look at the two main nephrons that are in the main part of your body.
nephrons
The functions are: 1:IT forms the filtering bed through which all the constituents of plasma excepting colloids of plasma are filtered and thus helps in urine formation.
The neurohypophyseal secretion of ADH (antidiuretic hormone) promotes water reabsorption in the kidneys, leading to the formation of concentrated urine. ADH acts on the collecting ducts of the nephrons in the kidneys to increase their permeability to water, allowing the body to conserve water and produce concentrated urine.
nephrons
urine is collected from all of the nephrons and then flow out of the kidney through the ureter.
The process by which the kidneys produce urine is called nephron filtration. This involves several stages: filtration, reabsorption, and secretion. Blood is filtered in the nephrons, where waste products and excess substances are separated from essential nutrients and water. The resulting urine is then excreted from the body.