Effect of Carbon monoxide on oxygen transport

Aarushi Pandit
Note by Aarushi Pandit, updated more than 1 year ago
206
4
0

Description

This note elucidates the effect of carbon monoxide on oxygen transport

Resource summary

Page 1

EFFECT OF CARBON MONOXIDE ON OXYGEN TRANSPORT

WHAT IS IT?Carbon Monoxide, CO, is formed when a carbon containing compound burns incompletely

Haemoglobin combines very readily, and almost irreversibly, with carbon monoxide. It combines with CO 250 times more readily than it does with oxygen.Carbon monoxide readily diffuses across the walls of the alveoli, into the blood, and into the red blood cells. Here it combines with the haem groups in the haemoglobin molecules, forming carboxyhaemoglobin. Carboxyhaemoglobin is a very stable compund; CO remains combined with haemoglobin for a long time

<-Oxygen and Carbon Monoxide dissociation curves plotted together give a clear picture of the alarming affinity between Hb and CO

Low concentrations of CO, as low as 0.1% of the air, can cause death by asphyxiation. Treatment of CO poisoning involves administration of a mixture of pure oxygen and carbon dioxide: high concentrations of oxygen to favour the combination of haemoglobin with oxygen rather than carbon monoxide, and carbon dioxide to stimulate an increase in breathing rate.

Cigarette smoke contains up to 5% Carbon monoxide. Around 5% of the haemoglobin in a regular smoker's blood is permanently combined with carbon monoxide.

Show full summary Hide full summary

Suggestions

Exchange surfaces and breathing
megan.radcliffe16
Biological Psychology - Stress
Gurdev Manchanda
Cells and the Immune System
Eleanor H
Cell Structure
megan.radcliffe16
OCR AS Biology
joshbrown3397
A Level: English language and literature technique = Dramatic terms
Jessica 'JessieB
All AS Maths Equations/Calculations and Questions
natashaaaa
AS level Maths Equations to Remember
Gurdev Manchanda
OCR Chemistry - Atoms, Bonds and Groups (Definitions)
GwynsM
F211: Transport in animals keywords and info
Gurdev Manchanda
The structure of the Heart, AS Biology
mill-bill