Interesting Human Heart Facts! Trivia Quiz

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| By Yousef

Yousef

Community Contributor

Quizzes Created: 3 | Total Attempts: 2,044

Questions: 6 | Attempts: 547 | Updated: Mar 21, 2023

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Questions and Answers

1.

Which of the following statements is True :
- A.
  
  The right ventricle is thicker than the left ventricle
- B.
  
  The left ventricle is thicker than the right ventricle
- C.
  
  The left and right ventricles have the same thickness
- D.
  
  The left ventricle pump deoxygenated blood to the lungs
Correct Answer
B. The left ventricle is thicker than the right ventricle

Explanation
The left ventricle is thicker than the right ventricle because it needs to pump oxygenated blood to the rest of the body, while the right ventricle only needs to pump deoxygenated blood to the lungs. The left ventricle has a larger workload and therefore requires more muscle mass to generate the necessary force for efficient circulation.

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2.

The Moderator band is located in :
- A.
  
  Right ventricle
- B.
  
  Left ventricl
- C.
  
  Both right and left ventricle
- D.
  
  None of the above
Correct Answer
A. Right ventricle

Explanation
The moderator band is a muscular structure located in the right ventricle of the heart. It is also known as the septomarginal trabecula and plays a role in the conduction of electrical signals within the heart. It helps to coordinate the contraction of the ventricles, ensuring efficient blood flow. Therefore, the correct answer is the right ventricle.

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3.

Which of the following forms the most of the posterior surface of the heart (base) :
- A.
  
  Right atrium
- B.
  
  Right ventricle
- C.
  
  Left atrium
- D.
  
  Left ventricle
Correct Answer
C. Left atrium

Explanation
The left atrium forms most of the posterior surface of the heart (base) because it is located towards the back of the heart and is the chamber that receives oxygenated blood from the lungs. It is positioned behind the right atrium and ventricle, and the left ventricle is located more towards the front of the heart. Therefore, the left atrium contributes the most to the posterior surface of the heart.

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4.

The posterior interventricular artery is mostly branched from :
- A.
  
  Arch of the aorta
- B.
  
  Left coronary artery
- C.
  
  Right coronary artery
- D.
  
  None of the above
Correct Answer
C. Right coronary artery

Explanation
The posterior interventricular artery is mostly branched from the right coronary artery. The right coronary artery is one of the main arteries that supplies blood to the heart. It originates from the aorta and travels along the surface of the heart, branching into various smaller arteries. One of these branches is the posterior interventricular artery, which runs along the back of the heart and supplies blood to the posterior part of the ventricles. Therefore, the correct answer is the right coronary artery.

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5.

The partial obstruction of a coronary artery is called :
- A.
  
  Angina pectoris
- B.
  
  Myocardial infarction
- C.
  
  Necrosis
- D.
  
  Heart attack
Correct Answer
A. Angina pectoris

Explanation
Angina pectoris is the correct answer because it refers to the partial obstruction of a coronary artery. This condition causes chest pain or discomfort due to reduced blood flow to the heart muscle. It is different from myocardial infarction, which is a complete blockage of a coronary artery leading to the death of heart muscle cells. Necrosis is a general term for cell death, and a heart attack is another term for myocardial infarction.

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6.

The Parasympathetic Nervous System :
- A.
  
  Inhibit the GIT and the heart
- B.
  
  Stimulate the GIT and the heart
- C.
  
  Inhibit the GIT but stimulate the heart
- D.
  
  Stimulate the GIT but inhibit the heart
Correct Answer
D. Stimulate the GIT but inhibit the heart

Explanation
The parasympathetic nervous system stimulates the gastrointestinal tract (GIT) by increasing digestive secretions, promoting peristalsis, and increasing blood flow to the digestive organs. However, it inhibits the heart by decreasing heart rate and reducing the force of contractions. This allows the body to conserve energy and focus on digestion and rest.

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Apr 30, 2018

Quiz Created by
Yousef

Interesting Human Heart Facts! Trivia Quiz

Which of the following statements is True :

The Moderator band is located in :

Which of the following forms the most of the posterior surface of the heart (base) :

The posterior interventricular artery is mostly branched from :

The partial obstruction of a coronary artery is called :

The Parasympathetic Nervous System :