briefly describe three functions of the urinary system.
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- Balancing body fluids and electrolytes by use of hormones such as ANP, and ADH which regulates reabsorption in the nephron.
- Removes waste from the blood such as urea along with urine
- Regulates blood volume and blood pressure by using the renin-angiotensin system.
- The urinary system consists of kidneys, ureter, bladder, sphincter muscles, nerves in the bladder, and the urethra. The urinary system releases several hormones that balance body fluids and electrolytes. Atrial-natriuretic peptide hormone helps in trapping sodium in the nephron to produce more urine. The anti-diuretic hormone helps in conserving water by increasing reabsorption in the kidneys.
- The urinary system removes waste products from the body such as urea from the blood. The body breaks down proteins, poultry, and certain foods to form urea which is carried in the bloodstream to the kidneys where it is removed along with urine.
- Another crucial role of the urinary system is to regulate blood volume and blood pressure. The urinary system regulates blood volume and pressure through the renin-angiotensin system. When blood pressure is low, kidneys release renin enzyme which converts angiotensinogen to angiotensin I, which is later converted to angiotensin II by ACE. Angiotensin II regulates the release of aldosterone from adrenal glands causing the renal tubules to retain sodium and water that increases blood volume.
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