Urinary System Flashcards
kidneys
largest most complex organ of the urinary system
bean shaped
located bwtween the peritoneum and the posterior wall of the abdomen
level of T-12 and L-3
renal capsule
high vascular
protective outer layer
hilum/hilus
medial surface of kidney
concave
enterance of nerves, ureters, and blood vessels
cortex
outer region
medulla
inner region
urine collection process
nephron –> path of urine drainage collecting ducts –> papillary duct in rnal pyramid –> minor calyx –> major calyx –> renal pelvis –> ureter –> bladder
afferent arterioles
(into) minute capillaries
supply nephron units with bloddat the glomerulus
efferent arterioles
(away) carry filtered blood
forms the peritubular capillaries (also known as the secondary capillary network)
nephron
1 million per kidney
functional unit of the kidney
medulla
renal pyramids, renal columns, minor calyces, major calyces, renal pelvis
renal corpuscle (glomerulus)
smallest part of afferent arteriole
supplies filtrate to bowmans capsule (glomerular/bowmans capsule)
renal tubule
proximal convoluted tubule
henles loop/loop of henle/nephron loop
distal convoluted tubule
ureters
convey urine to bladder by peristalsis
layers of ureter
outer fibrous layer
muscular layer
inner layer
enter trigone posterior and inferior
bladder
storage portion of urinary tract average fluid capacity 700 - 800 mL posterior to symphisis pubis male: anterior to rectum, female: anterior to vagina and inferior to uterus fold in peritoneum hold it in position
