Coumadin (Warfarin)
A. is produced by eosinophils.
B. dissolves blood clots.
C. is a potent anticoagulant.
D. blocks the action of factor X.
E. promotes coagulation.
Answer: C
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Podocytes and pedicels are part of the
A) peritubular capillaries. B) collecting duct. C) glomerular capsule. D) distal convoluted tubule.
A threshold potential is
a. the potential achieved when two opposing forces acting upon an ion (concentration and electrical gradients) achieve a state of equilibrium b. the peak potential achieved during an action potential c. the point at which there is an explosive increase in Na+ or Ca2+ permeability d. the potential at which K+ permeability increases e. always a positive potential
The ball of capillaries in the renal corpuscle is called the ________.
Fill in the blank(s) with the appropriate word(s).
Explain the function of sodium-potassium ion pumps
A) They generate ATP for the cell during the electron transport chain when hydrogen ions move in a process known as chemiosmosis. B) The sodium-potassium ion pump binds acetylcholine across the synaptic cleft to generate an action potential at the sarcolemma. C) The sodium-potassium ion pump allows facilitated diffusion of potassium during the repolarization of a muscle cell. D) The sodium-potassium ion pump allows facilitated diffusion of sodium during the depolarization of a muscle cell. E) The sodium-potassium ion pump maintains the resting membrane potential of a cell by exporting three sodium ions out in exchange for two potassium ions entering the cell.