Desmosomes are more effective than tight junctions in preventing substances from passing between cells
Indicate whether the statement is true or false
FALSE
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Which type of innervation causes the heart rate to increase?
A. Parasympathetic B. Sympathetic
The collecting ducts and distal convoluted tubules
A. collect filtrate from Bowman capsule. B. actively transport Na+ but not Cl?. C. do not alter their permeability to water. D. vary in their permeability to water relative to the amounts of ADH present. E. reabsorb glucose.
The action of the flexor digitorum longus is to
a. flex toes 2 - 5, and help in plantar flexion b. extend toes 2 - 5, and help in dorsiflexion c. extend toes 2 - 5, and supinate the foot
The parathyroid glands respond rapidly to hypocalcemia. The protein responsible for the rapid response of the principal cells to a falling calcium level is:
A. the PTH receptor B. membrane Ca++-ATPase C. Ca++-sensing receptor D. the Na+-Ca++ exchange antiporter E. TRPV5 Ca2+ channel