In single unit smooth muscle, tension is increased by
a. increasing the number of individual cells recruited by neurons to contract.
b. increasing the levels of cytoplasmic calcium available to permit cross-bridge formation.
c. increasing the synthesis of contractile units so that more power is attained.
d. doing all of these.
e. doing none of these.
B
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The glomerular capillary wall contains filtration slits formed by the clefts between the foot processes of adjacent podocytes
Indicate whether the statement is true or false
Carbonic anhydrase is located where?
A) principal cells basolateral membrane B) intercalated cells basolateral membrane C) proximal tubule apical membrane D) proximal tubule basolateral membrane E) principal cells apical membrane
Rebecca's inspiratory reserve volume = 5, vital capacity = 8, residual volume = 1, and expiratory reserve volume = 2. Her tidal volume would be equal to ________ and her total lung capacity would be ________.
A. 1; 13 B. 3; 7 C. 2; 10 D. 1; 9 E. Unable to determine with the given data.
Which is correctly paired?
a. Arrhythmia: AV node failure b. Fibrillation: premature contraction c. Heart block: uncoordinated atrial and ventricular contraction d. Ectopic focus: an abnormal pacemaker