Human A and P Notes 3/17/ 25

what is the overall function of the respiratory system

Oxygen into the cell, CO2 out

the atmospher bring oxygen to the

lungs

from the lungs oxygen bring it to the

blood

from blood oxygen transports to the

cells

Ventilation

the process of breathing

what are the two componets in ventilation

inhalation and exhalation

inhalation

bring air into the lungs

exhalation

blow air out the lungs

pulmonary respiration

gas exchange between the lungs and the blood

tissue respiration

gas exchange between blood and cells

oxygen moves from the lungs to the

blood

the alvelar has a ___ PO2 than pulm. capillary

higher

PO2

pressure of oxygen

PCO2

pressure of carbon dioxide

Inhalation

Atmospheric pressure has to be greater than intrathoacic

Exhalation

atmospheric pressure must be less than intrathoracic pressure

everything moves form

highest to lowest

Alveolar PO2

oxygen in the lungs

Pulmonary Capillary PO2

oxygen in the blood

oxygen moves from the (pulmonary resipiration)

alveolar (higher) to the capillary (lower)

carbon dioxide moves from the (pulmonary respiration)

capillary (higher) to the alvelor (lower)

oxygen moves from the (tissue respiration)

arterial (higher) to the tissue (lower)

carbon dioxide moves from the (tissue respiration)

tissue (higher) to the arterial (lower)

cannont change atmospheric pressue but you can change

intra thoracic pressure

raising intra thoracic volume decrease

intrathoracic pressure

lowering intra thoracic volume increases

intra throacic pressure

normal resting ventilation rate

12-18 times/min

normal arterial PCO2

35-45 mmHG

If CO2 levels increase

vent rate increases

If CO2 levels decrease

vent rate decrease

if ventilation rate increase then

CO2 levels should decrease

if ventilation rate decrease then

CO2 should increase

if a patient lungs is filled with blood what will happen to there O2 levels

decrease

if a patient lungs is filled with blood what will happen to there P02 levels

decrease also

if a patient lungs is filled with blood what will happen to there CO2 levels

increase

if a patient lungs is filled with blood what will happen to there Vent Rate

increase also

if a patient is dehyrdate what will happen

O2 will decrease

PO2 will decrease

CO2 will decrease

Vent Rate will increase

ventalation rate can increase by

exercising, anxiety, fear, dehyrdation. Anything that requires your heart to pump faster

ventalation rate can decrease by

brain damage, overdose anything to slow your heart rate down.