Class Notes (839,147)
Canada (511,218)
Physiology (1,062)
Lecture 2

Physiology 1021 Lecture 2: Respiratory Physiology

7 Pages

Course Code
Physiology 1021
John Ciriello

This preview shows pages 1 and half of page 2. Sign up to view the full 7 pages of the document.
Respiratory Physiology Respiratory System Organization and Function 1. Functions of the respiratory system a. Provides oxygen to the blood b. Removes carbon dioxide to the blood c. Regulates blood pH d. Speech e. Microbial defense f. Influences arterial concentration of chemical messengers g. Traps and dissolves small blood clots 2. Lung anatomy: the thoracic cavity a. Lungs are suspended in the thoracic cavity and are surrounded by the chest wall b. Thoracic cavity is separated from the abdominal cavity and the diaphragm c. The space between the lung and the chest wall is called the intrapleural space d. The right lungs have 3 lobes and the left lung has 2 lobes e. Visceral pleura is the inner membrane and it cover slung tissue f. Intrapleural space is in the middle and filled with pleural fluid g. Parietal pleura is the outer membrane and is fused to the ribcage 3. Functional region a. Conducting zone i. Air travels through and is conditioned to be safe for gas exchange 1. Includes humidification, temperature change, mucocilliary elevator (microbial defense) b. Respiratory zone i. Gas exchange ii. Microbial defense (macrophages) ** Bronchioles exist in both zones** 4. Alveoli a. Type 2 cells make surfactant b. Type 1 cells are a flat cell and they transport gases and forms Blood Gas Barrier i. Maximizing surface area maximizes gas exchange c. Macrophage moves from alveolus to alveolus taking up debris
More Less
Unlock Document

Only pages 1 and half of page 2 are available for preview. Some parts have been intentionally blurred.

Unlock Document
You're Reading a Preview

Unlock to view full version

Unlock Document

Log In


Join OneClass

Access over 10 million pages of study
documents for 1.3 million courses.

Sign up

Join to view


By registering, I agree to the Terms and Privacy Policies
Already have an account?
Just a few more details

So we can recommend you notes for your school.

Reset Password

Please enter below the email address you registered with and we will send you a link to reset your password.

Add your courses

Get notes from the top students in your class.