1. Drugs called beta blockers block (prevent) the action of epinephrine and nore
ID: 168840 • Letter: 1
Question
1. Drugs called beta blockers block (prevent) the action of epinephrine and norepinephrine in the heart beta-blockers (A). lead to a decrese in the force of contraction (B). cause an increse in venous return (C).cause an increase in heart rate (D). both A and B (E). None of the above.
2. calculate net filration pressure (NFP) and select the best answer below. : interstitial fluid hudrostatic pressure = 1 mmhg : osmotic pressure due to plasma protein = 25mmhg : blood hydrostatic pressure = 17 mmhg :osmotic pressure due to interstitial fluid protein = 1 mmhg
NFP = A. -8 mmhg, which favors net absorption B. -6 mmhg, which favors net filtration C. +6 mmhg, which favors net filtration D 40 mmhg, which favors net absorption E. none of the above
3. which of the following symptoms occur when the early stages of congestive heart failure affect the right side of the heart? A. tachycardia B.Bradycardia C. Systemic edema D. pulmonary edema E. fibrilation.
Explanation / Answer
1. Beta blocker decreases the blood pressure by reducing heart rate by blocking the effect of epinephrine. All together it reduces the blood flow in body
Hence, (C) is correct option.
2. Net filtration rate is = all the forces which favour filtration - all forces which oppose filtration
NFR= (Capillary hydrostatic pressure -Interstitial hydrostatic pressure) - (Osmotic force due to plasma protein - Osmatic force due to interstitial protein concentration)
NFR= (17-1) - (25- 1) = 16- 24 = -8
Thus answer would be A). -8mmHg which favour net absorption
3. Right side failure of heart will effect the blood flow to lungs because it pump blood to lungs for oxygen uptake thus leads to the pulmonary defects thus pulmonary edema is right answer.
Edema is the term used for swelling. Here pulmonary edema means swelling of lungs because accumation of blood due defective blood supply
Option D.) Pulmonary edma
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