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NEET UG Body Fluids and Circulation — practice questions — page 4

Explore 96 free Body Fluids and Circulation questions in NEET UG Biology. Open each question or exercise to read its content, reference answers and available explanation.

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Body Fluids and Circulation questions and exercises with answers

Showing questions 91–96 of 96.

In a standard ECG, ventricular contraction begins shortly after which point?Read the answer and worked solution →Pulmonary veins carry oxygenated blood into the:Read the answer and worked solution →Blood pumped by the right ventricle enters the:Read the answer and worked solution →In a blood pressure reading of 120/80 mm Hg, the 80 represents:Read the answer and worked solution →Which term means that the heart has stopped beating?Read the answer and worked solution →Closure of the semilunar valves occurs when:Read the answer and worked solution →

Worked practice questions

In a standard ECG, ventricular contraction begins shortly after which point?

  1. The S point
  2. The T point
  3. The Q point
  4. The P point
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Correct answer: C. The Q point

Ventricular contraction starts just after Q in the QRS complex, marking the beginning of systole.

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Pulmonary veins carry oxygenated blood into the:

  1. Right ventricle
  2. Left atrium
  3. Left ventricle
  4. Right atrium
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Correct answer: B. Left atrium

Oxygenated blood from the lungs returns through the pulmonary veins to the left atrium, completing pulmonary circulation.

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Blood pumped by the right ventricle enters the:

  1. Pulmonary artery
  2. Dorsal aorta
  3. Superior vena cava
  4. Pulmonary vein
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Correct answer: A. Pulmonary artery

The right ventricle sends deoxygenated blood into the pulmonary artery toward the lungs.

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