Which efferent motor neuron listed below is found in the reflex arc for defecation?
A. Spinal cord
B. Stretch receptors in the rectal wall
C. The rectal wall
D. Motor neurons in the rectal wall
Answer: D
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Patients with a carbonic acid excess experience:
a. metabolic alkalosis b. metabolic acidosis c. respiratory alkalosis d. respiratory acidosis
Funny channels:
a. control currents through cardiac muscle cells b. are involved in producing pacemaker potentials c. allow calcium to pass into the cell d. both (b) and (c) e. none of the above
Increased sympathetic stimulation will cause ________.
A. increased urine production B. decreased blood volume C. vasoconstriction of afferent arterioles D. increased GFR
A solute, X, is placed in compartment A of a two compartment container and allowed to diffuse to compartment B and attain diffusion equilibrium. At that point in time,
A. there will be no further movement of any solute molecules between compartments. B. solutes will be moving in both directions equally. C. solutes will only continue to move from A to B. D. solutes will only continue to move from B to A. E. the concentration in compartment B will be much higher than that in compartment A.