BIO 242 lab anatomy of urinary system
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35 Terms
Remove nitrogenous waste
Maintain electrolyte, pH, and fluid balances in blood
What are the functions of the urinary system?
Kidney
A
Ureter
Urinary bladder
Urethra
Renal artery and vein
C and D
Adrenal gland
Ureters (urinary bladder)
A
Urinary bladder (urinary bladder)
B
Internal urethral sphincter (urinary bladder)
External urethral sphincter (urinary bladder)
E=D
Stretching of the bladder walls
What stimulus triggers the micturition reflex?
Internal- involuntary
External- voluntary
Which urethral sphincter is under involuntary control? Which one is voluntarily controlled?
Renal cortex
Renal pyramid of medulla
Papilla of renal pyramid
B
Renal columns
Renal pelvis
Major calyx
Minor calyx
Functional unit of kidney
What is a nephron?
Glomerulus and renal tubules
What two structures make up each nephron?
Afferent arteriole
B
Efferent arteriole
A
Glomerulus
A
Glomerular capsule
B
Proximal convoluted tubule
Descending limb
Ascending limb
Distal convoluted tubule
Collecting duct
Filtration, tubular reabsorption, and tubular secretion
What are the three processes of urine formation?
Passive process where blood passes from glomerular bed into glomerular capsule
Filtration
Filtrate components move through tubule cells and return to blood in capillaries
Tubular reabsorption
Substances move from blood of capillaries through tubular cells into filtrate
Tubular secretion