Lung Anatomy Quiz

Structure of the Lung

• The lung has a conical shape with an apex, base, three surfaces, and three borders.
• The apex extends about one inch above the medial third of the clavicle, inserting into the root of the neck.

Relations of Apex of Lung

• The apex is covered by cervical pleura and the supra-pleural membrane.
• Anteriorly, the apex is grooved by the subclavian artery.
• Posteriorly, it is separated from the neck of the first rib by:
  • Sympathetic trunk
  • Superior inter-costal artery
  • Ventral ramus of the first thoracic spinal nerve

Borders of the Lung

• Anterior Border:

  • Characterized as sharp.
  • Stretches between the costal and medial surfaces.
  • The left lung features a cardiac notch at the anterior ends of the left 4th and 5th inter-costal spaces.

• Posterior Border:

  • Appears rounded.
  • Located between the costal and medial surfaces.

• Inferior Border:

  • Sharp and circular in shape.
  • Distinguishes the medial and costal surfaces from the diaphragmatic surface.

Test your knowledge on the anatomical structure of the lungs, including the apex, base, surfaces, and borders. This quiz will cover the relationships of the apex of the lung and its surrounding structures in detail.