Urinary System

Question 1

Functions of Urinary System (2)

Answer 1

1) Produces, transports, & stores urine
2) Maintains chemical homeostasis of blood

Question 2

How does the urinary system maintain chemical homeostasis of the blood? (5)

Answer 2

1) Maintains & adjusts blood PLASMA VOLUME
2) Maintains blood PLASMA pH
3) Adjusts concentration of ELECTROLYTES (Sodium, Potassium, & Bicarbonate)
4) Removal of WASTE products in PLASMA
5) Produces HORMONES/ENZYMES (Calcitrol, Erythropoietin, & Renin)

Question 3

Sequence of Urine Production & Flow (14)

Answer 3

1) Blood enters Glomerulus of Renal Corpuscle via Afferent Arterioles
2) Filtration occurs through Endothelial-Capsular Membrane to create filtrate housed in Bowman’s Capsule of Renal Corpuscle
3) Exits Corpuscle into PCT of Renal Tubule
4) Descending limb of Loop of Henle
5) Ascending limb of Loop of Henle
6) DCT
7) Collecting Duct (CD)
8) Renal Papillae (now Urine)
9) Leaves Renal Papillae of Renal Pyramids into Minor Calyx
10) Major Calyx
11) Renal Pelvis
12) Ureter
13) Bladder
14) Urethra