The Hardest Quiz On The Human Heart You'll Ever Attempt
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The human heart is one of the most vital organs in the body. There are 60,000 miles of blood vessels in your body which are enough to go around the world twice. Did you know that the heart pumps about 2,000 gallons of blood every day? Here is the hardest quiz on the human heart you'll ever attempt. Give it a shot and see how high you score.
- 1._____ are the anchors of the inter-ventricular valves.
- A.
Leaflets
- B.
Chordae tendineae
- C.
Ventricular muscle fibers
- D.
Atrial muscle fibers
- 2.Nor-epinephrine is released from _______ nerves, causing heart rate to _______ :
- A.
Sympathetic, reduce
- B.
Para-Sympathetic, increase
- C.
Para-Sympathetic, reduce
- D.
Sympathetic, increase
- 3.Which of the following about heart sounds is incorrect :
- A.
The first heart sound is LUP
- B.
The second heart sound is DUB
- C.
The second Heart sound is LUP
- D.
Heart sounds occur due to valve closure
- 4.Intra alveolar pressure will be _____ during normal inspiration and _____ during normal expiration :
- A.
+1,-1
- B.
-1, 0
- C.
-1, +1
- D.
0, +1
- 5.After forceful expiration and glottis is closed :
- A.
IAP=Positive and IPP = Positive
- B.
IAP=Negative and IPP = Negative
- C.
IAP=0 and IPP = 0
- D.
IAP=0 and IPP = Negative
- 6.Plateau in cardiac muscles action potential will occur due to :
- A.
Inward diffusion of Na+
- B.
Inward diffusion of K+
- C.
Inward diffusion of Ca²+
- D.
Inward diffusion of H+
- 7.The pressure in pleural space :
- A.
More than atmospheric pressure
- B.
Positive in valvular pneumothorax
- C.
Equal to atmospheric pressure
- D.
Negative in valvualr pneumothorax
- 8.
- A.
Veins
- B.
Arteries
- C.
Arterioles
- D.
Capillaries
- 9.The second heart sound is associated with which one of the following :
- A.
Opening of the pulmonary and aortic valves
- B.
Closing of the pulmonary and aortic valves
- C.
Closing of the mitral and tricuspid valves
- D.
Opening of the mitral and tricuspid valves
- 10.If the arterial blood pressure is recorded at 132/84, what is the mean arterial pressure :
- A.
110 mm Hg
- B.
100 mm Hg
- C.
120 mm Hg
- D.
90 mm Hg
- 11.Cardiac output is equal to :
- A.
Stroke volume / heart rate
- B.
Stroke volume × heart rate
- C.
Systolic pressure - Diastolic pressure
- D.
Diastolic pressure + (pulse pressure/3)
- 12.The first heart sound is associated with which one of the following :
- A.
Opening of the pulmonary and aortic valves
- B.
Closing of the pulmonary and aortic valves
- C.
Closing of the mitral and tricuspid valves
- D.
Opening of the mitral and tricuspid valves
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