1. The Respiratory System
PART 3
The Respiratory System

2. Anatomy of Alveoli and the Respiratory Membrane
Figure 21.10b
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

3. Anatomy of Alveoli and the Respiratory Membrane
Figure 21.10c, d
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

4. The Respiratory Zone Features of alveoli Surrounded by elastic fibers
Interconnect by way of alveolar pores
Internal surfaces
A site for free movement of alveolar macrophages
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

5. A double-layered sac surrounding each lung
The Pleurae
A double-layered sac surrounding each lung
Parietal pleura
Visceral pleura
Pleural cavity
Potential space between the visceral and parietal pleurae
Pleurae help divide the thoracic cavity
Central mediastinum
Two lateral pleural compartments
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

6. Diagram of the Pleurae and Pleural Cavities
Figure 21.11
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

7. Location of Lungs in Thoracic Cavity
Figure 21.12a, b
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

8. Gross Anatomy of the Lungs
Major landmarks of the lungs
Apex, base, hilum, and root
Left lung
Superior and inferior lobes
Fissure – oblique
Right lung
Superior, middle, and inferior lobes
Fissures – oblique and horizontal
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

9. Gross Anatomy of the Lungs
Anterior View of Thoracic Structures
Figure 21.13a
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

10. Bronchopulmonary Segments
Figure (1 of 2)
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

11. Bronchopulmonary Segments
Figure (2 of 2)
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings

12. Blood Supply and Innervation of the Lungs
Pulmonary arteries
Deliver oxygen-poor blood to the lungs
Pulmonary veins
Carry oxygenated blood to the heart
Innervation
Sympathetic, parasympathetic, and visceral sensory fibers
Parasympathetic – constrict airways
Sympathetic – dilate airways
Copyright © 2008 Pearson Education, Inc., publishing as Benjamin Cummings