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Summary AQA ALEVEL BIOLOGY NOTES ON CARDIOVASCULAR DISEASE

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ALEVEL NOTES ON CARDIOVASCULAR DISEASE ADJUSTED TO THE AQA SPECIFICATION AND MADE FROM MARKSCHEMES









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Uploaded on
July 2, 2023
Number of pages
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Written in
2022/2023
Type
Summary

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Cardiovascular Disease
Atherosclerosis ( Atheroma Formation )


The ( between
accumulation
swelling) is
always lining



the endothelium


and the smooth muscle wall central region of the arterial tube .






Accumulation and in walls is made
swelling artery that
up of cells

(
mostly macrophage cells)
,
or cell debris , that contain lipids ( cholesterol and



fatty acids )




Angina Pectoralis

'

Severe of blood heart muscle
pain on exertion due to
shortage to the .




No muscle death .




A heart
blockage gradual heart



The
causes
damage to the muscle .




weakens
progressively . Sppf


Aneurysm
Balloon like of the
swelling artery

- .




Atheroma plagues weaken
damage and arteries




.




High blood pressure pushes layers of through
-



outer
inner
artery
elastic layer to form aneurysm .




Heart Attack ( Myocardial infarction)


sudden of
heart due
blockage

[
ar teries
'

or severe
pain to
p coronary .




¥ Part of the heart muscle is starved of oxygen and dies .


F
E
R

µ
E
, cardiac Arrest off
T

"
When heart
cholesterol is transported via lipoproteins :
stops beating
-




"
↳ HDL
good
"
-
Lack of electrical impulses
: :
cholesterol → liver

↳ LDL ' '
bad
"
:
: cholesterol → tissues
Pulmonary Embolism


When blood vessel blocked blood
by




in
lungs is clot
a
your a .




and
Symptoms chest pain difficulty breathing coughing blood




up
:
,




Thrombosis

-

It is the formation of a blood clot (thrombus) inside a


blood vessel flow of blood through
,
obstructing the


the
circulatory system .




to
plague damaging cell wall
fggG
'


Due
'


.
atheroma


DVT (
Deep Vein Thrombosis )


Deep vein thrombosis ( DVT) is serious condition that when blood clot forms in vein located deep inside

a occurs a a




your body .




General Factors Associated CHD ( Heart Disease )
Risk with
coronary

Diet Blood cholesterol High blood Smoking Exercise
-



pressure
- - .
'




correlation vs Causation !
Strategies to Reduce
coronary Heart Disease


These involve health people how disease place
primary advising avoid the first
-


care -
to in the .




Screening





Cultivating healthy lifestyle
-


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