Beginner Thoracic Muscles Quiz

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This quiz contains 10 questions. Click below to begin.

Q1. Which muscles occupy the spaces between adjacent ribs?

  • Gluteal muscles
  • Deltoid muscles
  • Masseter muscles
  • Intercostal muscles

Q2. How many main layers of intercostal muscles are present?

  • Five
  • One
  • Two
  • Three

Q3. Which is the most superficial intercostal muscle layer?

  • External intercostals
  • Internal intercostals
  • Innermost intercostals
  • Subcostals

Q4. Which is the deepest of the three main intercostal muscle layers?

  • External intercostals
  • Pectoralis major
  • Innermost intercostals
  • Internal intercostals

Q5. Which thoracic muscles primarily elevate the ribs during inspiration?

  • Subcostals
  • External intercostals
  • Transversus thoracis
  • Interosseous internal intercostals

Q6. Which nerves supply most intrinsic muscles of the thoracic wall?

  • Intercostal nerves
  • Accessory nerves
  • Phrenic nerves
  • Vagus nerves

Q7. Where are the subcostal muscles primarily located?

  • Within the lungs
  • Anterior surface of the sternum
  • Posterior internal thoracic wall
  • Inside the pericardium

Q8. Where is the transversus thoracis muscle located?

  • Within the lung hilum
  • Within the posterior mediastinum
  • External surface of the posterior thoracic wall
  • Internal surface of the anterior thoracic wall

Q9. What is a major general function of the thoracic wall muscles?

  • Control the heart valves
  • Assist respiration and stabilize the thoracic wall
  • Produce pulmonary surfactant
  • Pump blood through the heart

Q10. Which thoracic muscles can assist depression of the ribs during forced expiration?

  • Internal intercostals and related deep thoracic muscles
  • External intercostals only
  • Pectoralis major only
  • Diaphragm only
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