Lungs

Parietal Pleura

A serous membrane that lines the thoracic cavity and is peeled back from the posterior body wall when the lungs are removed.

Visceral Pleura

The tighter layer enveloping each lung that adheres directly to the lung surface.

Pleural Cavity

The space between the parietal pleura and visceral pleura that contains serous fluid to reduce friction during respiration.

Right Lung

Typically larger lung composed of three lobes: superior, middle, and inferior.

Oblique Fissure

The fissure that separates the middle and inferior lobes from the superior lobe of the right lung.

Cardiac Notch

The indentation on the medial surface of the left lung where the heart resides.

Lingula

A small, tongue-like projection of tissue on the superior lobe of the left lung, considered the anatomical equivalent of the right lung's middle lobe.

Hilum of the Lung

The region on the medial surface of both lungs serving as the entry and exit point for structures forming the root of the lung.

Primary Bronchus

Main airway branching from the trachea that divides into secondary and tertiary bronchi upon entering the hilum.

Pulmonary Artery

Carries deoxygenated blood from the right ventricle of the heart to the lungs for oxygenation.

Pulmonary Veins

Carry oxygenated blood from the lungs back to the left atrium of the heart.

Trachea

The main airway in the chest cavity, identifiable by its C-shaped cartilage rings.

Right Primary Bronchus

Shorter, wider, and more vertical than the left primary bronchus, making it a common site for inhaled foreign objects.

Left Lung

Smaller lung with two lobes: superior and inferior, accommodating the heart.