Ch. 20 - Respiratory PhysiologySee all chapters
All Chapters
Ch. 1 - Introduction to Physiology
Ch. 2 - Molecules and Molecular Interactions
Ch. 3 - Cells and Tissues
Ch. 4 - Cell Metabolism: Bioenergetics, Enzymes, and Respiration
Ch. 5 - Membrane Dynamics
Ch. 6 - Cell Communication
Ch. 7 - Integumentary System
Ch. 8 - Bone and Cartilage
Ch. 9 - Skeletal System
Ch. 10 - Joints
Ch. 11 - Muscles
Ch. 12 - The Nervous System I: Neurons and Neuronal Networks
Ch. 13 - The Nervous System II: The Central Nervous System
Ch. 14 - The Autonomic Nervous System
Ch. 15 - Sensory Physiology
Ch. 16 - The Endocrine System
Ch. 17 - Cardiovascular Physiology I: The Heart
Ch. 18 - Cardiovascular Physiology II: Blood, Blood Vessels, Circulation, and Exchange
Ch. 19 - The Urinary System
Ch. 20 - Respiratory Physiology
Ch. 21 - Acid-Base Balance-- Controlling Blood pH
Ch. 22 - Introduction to the Immune System
Ch. 23 The Lymphatic System
Ch. 23 - The Digestive System
Ch. 24 - Regulation of Metabolism and Energy Balance
Ch. 25 - Human Sexual Reproduction and Development

Concept #2: Functions of the Airways

Concept #3: The Thoracic Cavity

Practice: A 16-year-old female presents to the emergency department with a 2-hour history of difficulty breathing. She is diagnosed with an asthma attack, which is caused by excessive constriction of smooth muscle in the walls of her airways. Which of the following is the part of her airways that has the most smooth muscle and is thus contributing most to her asthma attack?

Practice: A 57-year-old male presents to his primary care physician complaining of a chronic cough. He reports that he feels the need to cough because his lungs are full of mucus; indeed, his coughs bring up large amounts of greenish-brown mucus. He has smoked two packs of cigarettes per day for the last forty years. Which of the following parts of his respiratory tract has been damaged by his smoking, causing mucus to accumulate in his lungs?