McClellan Socrative Questions

• 1. Which of the intercostal muscles contributes to inspiration over expiration?

  External intercostal muscle
• These ribs allow for the anterior/posterior expansion of the thoracic cage through a pump handle type motion.

  Upper 6 ribs
• What nerve innervates the diaphragm?

  Phrenic Nerve C3-C5
• Where is the transversus thoracis muscle located?


  Internal surface of the anterior thoracic wall
• Rib 3 attaches to the T2 and T3 vertebrae. Which of the statements below is true regarding this attachment?

  The head of rib 3 attaches to the inferior costal facet of T2
• Which of the following structures is not located within the mediastinum?

  thyroid gland
• 1. What is the lateral (left and right) boundaries of the mediastinum?

  The pleural sac of the lungs
• Which of the following structures is lateral to the vagus nerve?

  Phrenic nerve
• Which of the following structures is only found in one of the atria of the heart?

  Fossa Ovalis
• What two structures are involved in anchoring the interventricular valves to the wall of the left and right ventricles?

  chordae tendinae, papillary muscles
• Which of the following structures does not directly carry substances to the duodenum?

  Cystic duct
• Which of the following structures is not associated with the large intestine?

  Anus