The Na+-K+ ATPase transport system that plays a pivotal role in much of tubular reabsorption is located in the
a. luminal membrane of tubular cells.
b. basolateral membrane of tubular cells.
c. podocytes.
d. glomerular capillary membrane.
e. basement membrane.
B
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A weightlifter uses muscles so the muscles exert more than 75% of their maximum tension. This stimulates
A. shrinking of skeletal muscle. B. conversion of skeletal to smooth muscle. C. an increase in slow, fatigable white fibers. D. muscle fibers developing new filaments of actin and myosin.
The peritoneal membrane of the abdominal cavity secretes fluid to reduce friction between adjacent organs in the body. The tissue best suited to this description and function is ________.
A. simple columnar B. simple squamous C. stratified squamous D. elastic connective tissue
Which is not correct regarding the innervation of the kidney?
A. Parasympathetic innervation is from the vagus nerve. B. Sympathetic innervation is from segments T10-T12 of the spinal cord. C. Sympathetic stimulation causes vasoconstriction of the renal blood vessels. D. The kidney is served by the renal plexus. E. Parasympathetic stimulation decreases the rate of filtrate formation.
Most electrolyte reabsorption by the renal tubules is ________.
A) not Tm limited B) in the distal convoluted tubule C) hormonally controlled in distal tubule segments D) completed by the time the loop of Henle is reached