An increase in the concentration of which of the following within the

An increase in the concentration of which of the

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31) An increase in the concentration of which of the following within the interstitial space surrounding an arteriole would cause that vessel to constrict?A) lactic acidB) oxygenC) prostacyclinD) bradykininE) nitric oxideAnswer: BDiff: 4 Page Ref: 40732) Which of the following substances is secreted by endothelial cells and causes vasoconstriction?EDiff: 5 Page Ref: 40933) Which of the following substances is secreted by endothelial cells and causes vasodilation?A) oxygenB) nitric oxideC) adenosineD) bradykininE) endothelin-1BDiff: 5 Page Ref: 40934) Which of the following is an important vasodilator in coronary arteries?A) oxygenB) nitric oxideC) adenosineD) bradykininE) endothelin-1CDiff: 4 Page Ref: 40935) During exercise, which organs receive an increase in the proportion of cardiac output delivered to it?BDiff: 5 Page Ref: 4107
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36) Any change in the relative distribution of cardiac output to an organ is typically due to changes in which of the following?EDiff: 4 Page Ref: 40637) During exercise, which of the following tissues receive less blood flow compared to resting conditions?A) gastrointestinal tract onlyB) brain onlyC) skin onlyD) heart onlyE) both gastrointestinal tract and skinAnswer: ADiff: 5 Page Ref: 41038) Which of the following would decrease mean arterial pressure?EDiff: 4 Page Ref: 41039) What type of adrenergic receptor is found in the smooth muscle of most systemic arterioles?A) alpha onlyB) beta1onlyC) beta2onlyD) beta3onlyE) both alpha and beta1ADiff: 4 Page Ref: 41040) The effects of epinephrine on vascular resistance are dependent upon which of the following?DDiff: 5 Page Ref: 4118
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