Study Guides (256,480)
CA (124,661)
UTSC (8,077)
BIOC34H3 (46)

study guide

6 Pages
104 Views

Department
Biological Sciences
Course Code
BIOC34H3
Professor
Stephen Reid

This preview shows pages 1-2. Sign up to view the full 6 pages of the document.
Lecture 11 Study Notes (Slide 25 onwards...) and Lecture 12
Slide 26 (Lecture 11)
Hypoxia: decreased inspired oxygen
Hyperoxia: increased inspired oxygen
Normoxia: normal inspired oxygen
Hypocapnia: decreased inspired carbon dioxide
Hypercapnia: increased inspired carbon dioxide
Normocapnia: normal inspired carbon dioxide
Slide 27
Gas Concentration = partial pressure X k
oK = solubility co-efficient
oWhen calculating partial pressure, if Relative Humidity is not zero, you must
subtract it from the partial pressure of the gas in question
Slide 29 (SLIDE 2 LECTURE 12)
O2 uptake in the lungs is perfusion limited
oWhat does perfusion limited mean exactly?
Perfusion limitation: limiting factor that gets oxygen to tissues is
rate of which blood is flowing from pulmonary circulation to the
tissues. The blood gets oxygen to the tissues, and gets rid of Carbon
Dioxide from tissues
So blood flow limiting factor in perfusion limitation?
Yes
oO2 uptake occurs in 1/3 of the capillary
CO2 excretion likewise is perfusion limited (blood flow limited)
oExcretion occurs in 1/3 of the capillary too
www.notesolution.com
So basically by 1/3 of capillary length, gas exchange has increased O2 content and
decreased CO2 content
oWe do not use 2/3 of capillary length for gas exchange
oPrior to entering the alveoli chambers (and venous circulation i.e. after
tissues until pre-alveoli), oxygen level is at 40, co2 at 46
oAfter been oxygenated, oxygen level is at 100, co2 at 40 until it passes through
tissues. After that it is oxygen 40, co2 46
There is no diffusion limitation on gas exchange
oIs amount of oxygen limiting factor?
Possibly because athletes can become diffusion limited, meaning they
cannot utilize any more oxygen due to the max blood already been in
use
Slide 3
Eupnea: normal breathing that is sufficient to meet metabolic demands
Hyperpnea: increase in alveolar ventilation to meet increased metabolic demands
Alveolar ventilation is determined by O2 consumption and CO2 production
oVA = (VCO2 X K) / PaCO2
Respiratory quotient: ratio of CO2 production relative to O2 consumption
oRQ = CO2 production/O2 consumption
Slide 4
Apnea: absence of breathing
oHence sleep apnea: absence of breathing while sleeping
Dyspnea: laboured breathing or shortness of breath
Slide 5
Hypoventilation: decrease in alveolar breathing
www.notesolution.com

Loved by over 2.2 million students

Over 90% improved by at least one letter grade.

Leah — University of Toronto

OneClass has been such a huge help in my studies at UofT especially since I am a transfer student. OneClass is the study buddy I never had before and definitely gives me the extra push to get from a B to an A!

Leah — University of Toronto
Saarim — University of Michigan

Balancing social life With academics can be difficult, that is why I'm so glad that OneClass is out there where I can find the top notes for all of my classes. Now I can be the all-star student I want to be.

Saarim — University of Michigan
Jenna — University of Wisconsin

As a college student living on a college budget, I love how easy it is to earn gift cards just by submitting my notes.

Jenna — University of Wisconsin
Anne — University of California

OneClass has allowed me to catch up with my most difficult course! #lifesaver

Anne — University of California
Description
Lecture 11 Study Notes (Slide 25 onwards...) and Lecture 12 Slide 26 (Lecture 11) Hypoxia: decreased inspired oxygen Hyperoxia: increased inspired oxygen Normoxia: normal inspired oxygen Hypocapnia: decreased inspired carbon dioxide Hypercapnia: increased inspired carbon dioxide Normocapnia: normal inspired carbon dioxide Slide 27 Gas Concentration = partial pressure X k o K = solubility co-efficient o When calculating partial pressure, if Relative Humidity is not zero, you must subtract it from the partial pressure of the gas in question Slide 29 (SLIDE 2 LECTURE 12) O2 uptake in the lungs is perfusion limited o What does perfusion limited mean exactly? Perfusion limitation: limiting factor that gets oxygen to tissues is rate of which blood is flowing from pulmonary circulation to the tissues. The blood gets oxygen to the tissues, and gets rid of Carbon Dioxide from tissues So blood flow limiting factor in perfusion limitation? Yes o O2 uptake occurs in 13 of the capillary CO2 excretion likewise is perfusion limited (blood flow limited) o Excretion occurs in 13 of the capillary too www.notesolution.com
More Less
Unlock Document


Only pages 1-2 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


OR

Don't have an account?

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