Urinary System / Portage Learning A&P2, Module 7 SOLUTIONS

Urinary System / Portage Learning A&P2, Module 7 SOLUTIONS urinary system organs 2 kidneys 2 ureters 1 urinary bladder 1 urethra kidney (shape, weight, location) bean shaped / size of soup can, about 5oz / located between T12-L3 vertebrae and are protected by the rib cage / right is slightly lower than the left b/c of the liver above it adrenal glands a pair of endocrine glands that sit just above the kidneys and secrete hormones (epinephrine and norepinephrine) that help arouse the body in times of stress. renal hilus (hilum) a notch located near center of medial concave side of the kidney / the passageway to renal sinus for vessels and ureter 3 layers of kidney tissue (outermost to innermost) renal fascia (outer, fibrous connective tissue, keeps kidney in place), adipose capsule (middle, fatty layer protects kidney from trauma), renal capsule (inner layer of protective tissue projects kidney from injury + infection) 3 regions of kidney (outermost to innermost) cortex, medulla, renal pelvis renal pelvis (of kidney) central collecting region in the kidney, extensions of the pelvis (calyces) collect urine and drain continuously into pelvis and then into ureter kidney blood supply chain Abdominal aorta -> renal artery -> segmental artery -> lobar artery -> interlobar artery -> arcuate artery -> interlobular artery -> afferent arteriole -> glomerular capillaries / filtration / efferent arteriole -> peritubular capillaries (deoxygenated) or vasa recta -> interlobular vein -> arcuate vein ->interlobar vein -> renal vein which exits kidney Input from the _______ adjusts the diameter of the renal arteries thereby regulating renal blood flow. sympathetic nervous system Ureters Thin muscular tubes that carry urine from the kidneys to the bladder. ureterovesical valves