The urinary bladderThe urinary bladder is a temporary storage reservoir for urine. The urethra is the final passageway for the flow of urine.
Bladder: Your bladder holds urine until you're ready to empty it (pee). It's hollow, made of muscle, and shaped like a balloon. Your bladder expands as it fills up. Most bladders can hold up to 2 cups of urine.
- Ureters transport urine from kidneys to urinary bladder. - Urinary bladder stores urine and expels it into urethra.
The center part of the kidney, the medulla (meh-DUH-luh), has fan-shaped structures called pyramids. These drain urine into cup-shaped tubes called calyxes (KAY-luh-seez). From the calyxes, pee travels out of the kidneys through the ureters (YUR-uh-ters) to be stored in the bladder (a muscular sac in the lower belly).
Nephrons filter materials out of the blood, return to the blood what is needed, and excrete the rest as urine. As shown in Figure 16.2. 6, the kidneys are organs of the urinary system, which also includes the ureters, bladder, and urethra — organs that transport, store, and eliminate urine, respectively.
Urination? Urination is the process of releasing urine from the urinary bladder through the urethra and out of the body.
renal capsule, thin membranous sheath that covers the outer surface of each kidney. The capsule is composed of tough fibres, chiefly collagen and elastin (fibrous proteins), that help to support the kidney mass and protect the vital tissue from injury.
The functional unit of the kidney is called the nephron. It comprises of a coiled renal tubule and a vascular network of peritubular capillaries.
The tube that carries urine from the kidney to the bladder.
Each of your kidneys is made up of about a million filtering units called nephrons. Each nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process: the glomerulus filters your blood, and the tubule returns needed substances to your blood and removes wastes.
Listen to pronunciation. (yoo-REE-thruh) The tube through which urine leaves the body. It empties urine from the bladder.
Their main job is to cleanse the blood of toxins and transform the waste into urine. Each kidney weighs about 160 grams and gets rid of between one and one-and-a-half litres of urine per day. The two kidneys together filter 200 litres of fluid every 24 hours. to the blood.