What system is the kidney in? Why is the urinary system important? Urinary system is of one of the vital system among human body parts. The Urinary Tract is like the plumbing system, it drains Urine from the Kidney and plays an important role in maintaining the homeostasis, a set of complex processes to maintain the balance of water, ions, calcium and blood pressure in the human body.
Where are the kidneys located? The kidneys are bean-shaped organs about 11 cm x 7 cm x 3 cm that are located against the back muscles in the upper abdominal area.
They sit opposite each other on both the left and right side of the body; the right kidney, however, sits a little lower than the left to accommodate the size of the liver. Where is the loop of Henle located?
Answer and Explanation: The loop of Henle is located in the medulla of the kidneys, it is the next step in the renal tubule process after the proximal tubule. How does urine leave the body? From the calyxes, pee travels out of the kidneys through the ureters pronounced: YUR-uh-ters to be stored in the bladder a muscular sac in the lower belly. When a person urinates, the pee exits the bladder and goes out of the body through the urethra pronounced: yoo-REE-thruh , another tube-like structure.
Why are we born with two kidneys? Most humans are born with two kidneys as the functional components of what is called the renal system, which also includes two ureters, a bladder and a urethra.
The kidneys have many functions, including regulating blood pressure, producing red blood cells, activating vitamin D and producing some glucose. Why can we live with one kidney? There are three main reasons why a person may have only one kidney: Another condition, which is called kidney dysplasia, causes a person to be born with two kidneys, but only one of them works. Most people who are born without a kidney or with only one working kidney lead normal, healthy lives.
The juxtaglomerular apparatus is composed of:. The terminal portion of the distal tubule empties through collecting tubules into a straight collecting duct in the medullary ray. The collecting duct system is under the control of antidiuretic hormone ADH. When ADH is present, the collecting duct becomes permeable to water. Numerous collecting ducts merge into the renal pelvis, which then becomes the ureter.
The ureter is a muscular tube, composed of an inner longitudinal layer and an outer circular layer. The lumen of the ureter is covered by transitional epithelium also called urothelium.
Recall from the Laboratory on Epithelia that the transitional epithelium is unique to the conducting passages of the urinary system. Its ability to stretch allows the dilation of the conducting passages when necessary. The ureter connects the kidney and the urinary bladder.
The ureter empties the urine into the bladder. The transitional epithelium continues over the surface of this organ. The thickened muscular layers become interwoven and cannot be clearly identified at this point. The urethra carries the urine away from the bladder to the outside of the body.
In the male, it is joined by the genital system. The epithelium changes from transitional to stratified or pseudostratified columnar in the urethra, and to stratified squamous in the distal end of the urethra.
Answer: Podocyte: Foot processes assist in filtration barrier function by repelling negatively-charged molecules. Mesangial Cell: Provides structure support and regulate diameter of capillaries.
Macula Densa: Senses blood pressure, regulates blood flow in afferent arteriole to maintain the glomerular filtration rate and stimulates release of renin. Juxtaglomerular Complex: synthesize, store and release renin. Answer: The ureter and bladder have a transitional epithelium. The initial segment of the urethra has a stratified epithelium, and the final segment has a stratified squamous epithelium. Slides Please select whether to view the slides in study mode or quiz mode.
In study mode, the images will contain labels and a description. In quiz mode, labels and description will be hidden. Study Mode. Virtual Microscope Slides Kidney Begin by identifying roughly where the renal cortex and renal medulla are located. Ureters are tubes that propel urine from the kidneys to the urinary bladder. Examine the epithelium and two layers of smooth muscle. The urinary bladder collects and stores urine. The kidneys reabsorb vital substances, remove unwanted ones, and return the filtered blood back to the body.
The kidneys are located behind the peritoneum, and so are called retroperitoneal organs. They sit in the back of the abdomen between the levels of the T12 and L03 vertebrae. The right kidney is slightly lower than the left kidney to accommodate the liver. Both kidneys are bean-shaped and about the size of an adult fist.
Blood enters the kidneys through renal arteries. These arteries branch into tiny capillaries that interact with urinary structures inside the kidneys namely the nephrons. Here the blood is filtered. Waste is removed and vital substances are reabsorbed back into the bloodstream. The filtered blood leaves through the renal veins.
Each kidney consists of an outer renal cortex, an inner renal medulla, and a renal pelvis. Blood is filtered in the renal cortex. The renal medulla contains the renal pyramids, where urine formation takes place.
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