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A&P Ch 28

Urinary System

Waste product normally excreted by the kidneys? Urea
Which is the correct order of blood flow through a kidney? Interlobar arteries, arcuate arteries, glomerular capillaries, arcuate veins
The portion of the kidney that extends between the renal pyramids is called the Renal columns
Which is the correct order of filtrate flow of blood through the kidneys? Glomerular capsule, proximal convoluted tubule, loop of Henle, distal convoluted tubule, collecting duct
Which structure of the nephron reabsorbs the most substances? Proximal convoluted tubule
This is a nephron process that results in a substance in blood entering the already formed filtrate. Secretion
Tubule and duct cells reabsorb what percentage of filtered water to the blood? 99%
The proximal convoluted tubules reabsorb what percentage of filtered water? 65%
Substances secreted by the tubules of a nephron? Ammonia, Hydrogen ions, Creatinine
Ways angiotensin II affects the kidneys? It enhances reabsorption of certain ions, It can increase the amount of water reabsorbed by the kidneys, and it stimulates the release of aldosterone from the adrenal glands
Which is the major hormone that regulates water reabsorption? Anti-diuretic hormone
Increased secretion of aldosterone would result in ______________ of blood ____________? Increase, sodium
Which layer of the urethra consists of areolar connective tissue containing blood vessels, lymphatic vessels, and nerves? Adventitia
This lies in the anterior corner of the trigone of the bladder. Internal urethral orifice
What is the capacity of urine storage in the urinary bladder? 700-800 ml
This is the structure of the nephron that filters blood Glomerular capsule
This term means entry of substances into the body from the filtrate Reabsorption
This transports urine from the kidney to the bladder Ureter
How many layers of tissue are there in the wall of the ureters and the wall of the urinary bladder? Both the ureters and the bladder have three layers
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