Question

Choose the correct answer from the alternatives given.
Which of the following chambers of the heart has the thickest muscular walls in human beings?

• A. Right atrium
• B. Right ventricle
• C. Left atrium
• D. Left ventricle

Answer 1

The correct option is D Left ventricle

• The left ventricle has the job of pumping out blood to the systemic circulation, that is, to the rest of the body where oxygen is needed, whereas the right ventricle pumps blood out to the pulmonary artery to go to the lungs.
  
• There has to be more muscle in the left ventricle to generate the force needed to travel such long distances all over the body, meaning there is more work involved.
  

So, the correct answer is 'Left ventricle'.