Page 881 - Fundamentals of anatomy physiology

868 Unit 5 Environmental Exchange
Figure 23–7 The Gross Anatomy of the Lungs. ATLAS: Plates 42–47

Superior lobe Liver, Liver, Boundary between
Right lung right lobe left lobe right and left
pleural cavities
Horizontal fissure Left lung
Middle lobe
Superior lobe
Oblique fissure
Inferior lobe Oblique fissure

a Thoracic cavity, anterior view Fibrous layer
of pericardium
Inferior lobe
Falciform ligament
Cut edge of
diaphragm

b Lateral Surfaces Apex Apex

The curving anterior and lateral Superior
surfaces of each lung follow the lobe
inner contours of the rib cage.

ANTERIOR Superior lobe

Horizontal fissure Middle The cardiac notch Oblique
Oblique fissure lobe accommodates the fissure
pericardial cavity,
Inferior which sits to the left Inferior
lobe of the midline. lobe

Base Base

Right lung Left lung Groove
for aorta
c Medial Surfaces Pulmonary
artery
23 The medial surfaces, which contain the Apex Apex Pulmonary
hilum, have more irregular shapes. The veins
medial surfaces of both lungs have Superior Bronchus Superior Oblique
grooves that mark the positions of the lobe POSTERIOR lobe fissure
great vessels and the heart. Diaphragmatic
surface
Pulmonary artery Middle The hilum of the lung Inferior
Pulmonary veins lobe is a groove that allows lobe
Horizontal fissure Inferior passage of the primary
lobe bronchi, pulmonary
Oblique fissure vessels, nerves, and
lymphatics.

Base Bronchus
Base

Right lung Left lung