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MBBS The Cardiovascular System: The Heart — practice questions

Explore 10 free The Cardiovascular System: The Heart questions in MBBS Anatomy. Open each question or exercise to read its content, reference answers and available explanation.

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The Cardiovascular System: The Heart questions and exercises with answers

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In which space within the mediastinum does the heart sit, separated from other mediastinal structures by the pericardium?Read the answer and worked solution →The inferior tip of the heart, lying just to the left of the sternum near the fourth and fifth ribs, is called what?Read the answer and worked solution →Roughly what is the typical weight range of an adult male heart, compared to a female heart of about 250 to 300 grams?Read the answer and worked solution →Which chambers of the heart act as the primary pumping chambers, propelling blood to the lungs or to the rest of the body?Read the answer and worked solution →The two sublayers of the pericardium are the tough outer fibrous pericardium and which more delicate inner layer?Read the answer and worked solution →Which vessel drains most of the coronary veins and empties directly into the right atrium?Read the answer and worked solution →The right ventricle receives blood from the right atrium through which valve?Read the answer and worked solution →Compared to the tricuspid valve's three flaps, how many cusps does the mitral (bicuspid) valve normally have?Read the answer and worked solution →Conduction system or valve?Read the answer and worked solution →Drag each part into its groupRead the answer and worked solution →

Worked practice questions

In which space within the mediastinum does the heart sit, separated from other mediastinal structures by the pericardium?

  1. The pericardial cavity
  2. The pleural cavity
  3. The peritoneal cavity
  4. The mediastinal sinus
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Correct answer: A. The pericardial cavity

1. The heart is located within the thoracic cavity, medially between the lungs, in the mediastinum. 2. A tough membrane called the pericardium separates the heart from other mediastinal structures. 3. The heart sits in its own space within this membrane, called the pericardial cavity. 4. The pleural cavity surrounds the lungs and the peritoneal cavity surrounds abdominal organs, and "mediastinal sinus" is not the name used for this space so none of these three name the heart's own cavity. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.1, p. 824_

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The inferior tip of the heart, lying just to the left of the sternum near the fourth and fifth ribs, is called what?

  1. The base
  2. The apex
  3. The cardiac notch
  4. The auricle
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Correct answer: B. The apex

1. The heart is shaped somewhat like a pinecone, broad at the top and tapering toward the bottom. 2. The great veins and arteries attach to its superior surface, called the base. 3. The inferior tip, lying just to the left of the sternum between the fourth and fifth ribs, is called the apex. 4. The cardiac notch is a depression in the lung caused by the apex's leftward deviation, and the auricle is a flap of the atrium, so neither names the heart's inferior tip. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.1, p. 824_

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Roughly what is the typical weight range of an adult male heart, compared to a female heart of about 250 to 300 grams?

  1. 150 to 200 grams
  2. 400 to 450 grams
  3. 300 to 350 grams
  4. 600 to 650 grams
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Correct answer: C. 300 to 350 grams

1. A typical heart is roughly the size of a person's fist, about 12 cm long and 8 cm wide. 2. Because of typical body-size differences between the sexes, female and male hearts differ in average weight. 3. The weight of a female heart is approximately 250 to 300 grams, while a male heart is approximately 300 to 350 grams. 4. The ranges 150 to 200 grams, 400 to 450 grams, and 600 to 650 grams do not match the male heart weight given for a typical adult. _Source: OpenStax Anatomy and Physiology (CC BY 4.0), Ch 19 "The Cardiovascular System: The Heart", section 19.1, p. 825_

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