Respiratory System Anatomy Lecture
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Questions and Answers

What encloses the left and right pleural cavities, each surrounding a lung?

  • Mediastinum
  • Vertebrae
  • Sternum
  • Thoracic wall (correct)
  • Which structure contains the heart, esophagus, trachea, major nerves, and major systemic blood vessels?

  • Mediastinum (correct)
  • Diaphragm
  • Left pleural cavity
  • Right pleural cavity
  • What is the structure that closes the inferior thoracic aperture?

  • Diaphragm (correct)
  • Sternum
  • Thoracic vertebrae
  • Mediastinum
  • Which part of thorax is flexible and consists of segmentally arranged vertebrae, ribs, muscles, and sternum?

    <p>Thoracic wall</p> Signup and view all the answers

    Which part of the thorax can extend above the level of rib 1?

    <p>Pleural cavities</p> Signup and view all the answers

    Which ribs are considered floating ribs?

    <p>11th and 12th</p> Signup and view all the answers

    Which structure forms the sternal angle, a major surface landmark used in physical examinations of the thorax?

    <p>Manubrium of sternum</p> Signup and view all the answers

    Which vertebrae does the head of each rib articulate with?

    <p>Body of its own vertebra and body of vertebra above</p> Signup and view all the answers

    What is the approximate horizontal plane for the superior margin of manubrium?

    <p>Same as IVD between T2 &amp; T3</p> Signup and view all the answers

    What forms the skeletal elements of the inferior thoracic aperture?

    <p>Body of vertebra T12 posteriorly, 12th rib &amp; distal end of 11th rib posterolaterally, xiphoid process anteriorly</p> Signup and view all the answers

    What type of tissue lines the nasal cavities?

    <p>Pseudostratified columnar epithelium</p> Signup and view all the answers

    What is the function of the conchae in the nasal cavities?

    <p>To increase the surface area of the nasal mucosa</p> Signup and view all the answers

    What is the main function of the hairs just inside the nostrils?

    <p>To help block the entry of dust into the respiratory system</p> Signup and view all the answers

    Which structure separates the 2 nasal cavities within the skull?

    <p>Nasal septum</p> Signup and view all the answers

    What is the composition of the nose, which air enters and leaves the respiratory system through?

    <p>Bone and cartilage covered with skin</p> Signup and view all the answers

    Where does the mucus produced in the sinuses drain into?

    <p>Nasal cavities</p> Signup and view all the answers

    What is the primary function of the paranasal sinuses?

    <p>To lighten the skull</p> Signup and view all the answers

    What is the purpose of the eustachian tubes?

    <p>To allow the eardrums to vibrate properly</p> Signup and view all the answers

    What is the function of the palatine tonsils in the oropharynx?

    <p>To form a ring of lymphatic tissue around the pharynx</p> Signup and view all the answers

    What prevents collapse of the larynx and maintains open air passages?

    <p>Cartilage</p> Signup and view all the answers

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