Lung Anatomy Quiz
Questions: 16 · 10 minutes
1. A vessel is carrying blood from the right ventricle toward the lungs for gas exchange. Which vessel type is it?
Pulmonary vein
Superior vena cava
Bronchial vein
Pulmonary artery
2. A pronounced indentation is visible along the anterior border of the left lung. Which nearby organ does this cardiac notch primarily accommodate?
Heart
Thymus
Esophagus
Liver
3. Which structure is the principal site where oxygen and carbon dioxide diffuse between air and blood?
Alveoli
Main bronchi
Visceral pleura
Pulmonary fissures
4. Which membrane lies directly on the lung surface and extends into its fissures?
Costal parietal pleura
Visceral pleura
Endothoracic fascia
Mediastinal parietal pleura
5. A lesion is described as lying on the surface of the lung that rests on the diaphragm. Which surface is involved?
Costal surface
Mediastinal surface
Diaphragmatic surface
Vertebral border
6. A clinician examines the lower neck for an injury that could affect the top of a lung. Which anatomical feature explains this concern?
The lung base descends into the abdominal cavity
The lung apex projects into the root of the neck above the first rib
The oblique fissure crosses the cervical vertebrae
The hilum lies above the clavicle
7. At the tracheal bifurcation, what is the internal ridge separating the openings of the two main bronchi called?
Hilum
Lingula
Carina
Pulmonary ligament
8. On the right lung, what is the main relationship created by the oblique fissure?
It separates the apex from the base
It separates the superior lobe from the middle lobe only
It separates the inferior lobe from the superior and middle lobes
It divides the middle lobe into medial and lateral parts
9. Which set of structures passes through the lung root at the hilum?
Trachea, esophagus, and thoracic duct only
Aorta, superior vena cava, and phrenic nerve only
Diaphragm, intercostal muscles, and parietal pleura
Main bronchus, pulmonary vessels, lymphatics, and autonomic nerves
10. A radiologist identifies the single major fissure of the left lung. Which lobes does it separate?
Apical and basal lobes
Superior and middle lobes
Middle and inferior lobes
Superior and inferior lobes
11. An inhaled object passes beyond the tracheal bifurcation. Why is it generally more likely to enter the right main bronchus?
The carina normally blocks entry into the left main bronchus
The right main bronchus is narrower, longer, and more horizontal
The left main bronchus has no direct connection to the trachea
The right main bronchus is typically wider, shorter, and more vertical
12. A surgeon plans to remove one bronchopulmonary segment while preserving nearby segments. Which feature helps make this possible?
Each segment is supplied by a segmental bronchus and an accompanying pulmonary artery branch
Each segment receives air from a separate main bronchus
Every segment is enclosed by its own parietal pleural sac
Pulmonary veins run centrally through each segment as its exclusive blood supply
13. How many lobes does the right lung normally have?
Two
Three
Four
Five
14. A surgeon uses the horizontal fissure as a landmark during a right-sided procedure. Which lobe lies immediately below this fissure anteriorly?
Inferior lobe
Middle lobe
Superior lobe
Lingula
15. A scan shows a tongue-shaped projection beside the heart on the left lung. To which lobe does the lingula belong?
Left inferior lobe
Right middle lobe
Left superior lobe
Right superior lobe
16. During a right lung dissection, you trace the horizontal fissure. Which two lobes does it directly separate?
Superior and middle lobes
Superior and inferior lobes
Middle and inferior lobes
The upper and lower parts of the superior lobe