Class Notes (839,559)
Canada (511,394)
KINE 3012 (22)
Tara Haas (22)
Lecture 2

Lecture 2 - Jan 11th.docx

2 Pages
115 Views

Department
Kinesiology & Health Science
Course Code
KINE 3012
Professor
Tara Haas

This preview shows 80% of the first page. Sign up to view the full 2 pages of the document.
Description
Page 10 - Extra Slides - Parts in the conducting zone aren't specialized for gas exchange - Most of the gas exchange occurs in the alveoli, made mostly of smooth muscle - Changing the radius in the conducting zone, it changes air flows Page 11 - Extra Slides - Aligned along the conducting zone - Cystic fibrosis, mutation in 1 protein causes mucous to fills the lungs, if in alveoli it stops gas exchange - Shows how the balance - Alveoli are 1 cell thick for easy gas exchange - Capillaries also 1 cell thick Page 12 - By having a balloon like structure, huge surface area - Distance between capillaries and alveoli is 0.5um - Diffusion doesn't move that far, e.g. the smell of food/skunk - So for it to be optimal, it has to be a close distance - The more interstitial fluid between the capillaries and alveoli reduces gas diffusion - 2 types of epithelial cells, - type 1 alveoli cell - gas exchange - type 2 alveoli cell - secretes surfactant, cleaning agent , reduces surface tension of the water, so the water doesn't stick onto the cell making it easier to inflate the lungs - Water is within the epithelial cell of the alveoli, we need to keep the layer of water there to prevent the cell from drying out and dying Page 13 - Thorax cavity - Top, collar bone is made of cartilage and flexible tissue - Problem is the lungs is airtight which is vital - Attached to the lung is membrane called Pleura - They form a sac between the lungs and thoracic wall, it may look joined but there's space inbetween - Filled with fluid and called intrapleural fluid - E.g. little water between 2 glass plates, they're not touching but they stick together - Pleural it adds pressure and a little bit of lubrication - I
More Less
Unlock Document

Only 80% of the first page 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


OR

Join OneClass

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

Sign up

Join to view


OR

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.


Submit