Other slides in this set

Slide 2

Preview of page 2

Here's a taster:

CONTENTS
Fitness and Staying Drugs and Controlling
Health Healthy You Plant Growth
Human
The Nervous Staying in Variation and
Health and
System balance Inheritance
Diet
Click on an overview topic to go to a
more detailed selection of subjects!…read more

Slide 3

Preview of page 3

Here's a taster:

FITNESS AND HEALTH
The Circulatory System CLICK HERE
RETURN TO
CONTENTS
1 Blood Pressure 2
PAGE
Heart Disease
Health and Fitness…read more

Slide 4

Preview of page 4

Here's a taster:

Men
THE CIRCULATORY SYSTEM Next
u
The Circulatory System Your heart pumps blood around your body:
carries oxygen and glucose
in your blood so that energy It relaxes to fill with blood
can be released through It contracts to squeeze blood into the arteries
aerobic respiration
When it contracts, blood is put under pressure and sent
to the arteries.
This ensures that blood reaches all parts of the body,
supplying the cells with glucose and oxygen for
respiration
This surge of blood is your heart beat / pulse.
Blood in the arteries is always under pressure…read more

Slide 5

Preview of page 5

Here's a taster:

Men
BLOOD PRESSURE Next
u
Blood Pressure is a measure of the force of blood per unit area as it flows through
the arteries.
It's measured in mm Hg High Blood Pressure
Blood Vessels can weak and burst
(millimetres of mercury) Burst in Brain = Brain Damage / Stroke
It's represented by two measurements:Burst in Kidneys = Kidney Damage
Systolic (first number) Low Blood Pressure
Blood doesn't circulate efficiently
Pressure in arteries when heart contracts
Some parts of the body deprived of glucose and
Diastolic (second number) oxygen
Can lead to fainting / cold hands and feet
Pressure in arteries when heart relaxes Pressure may drop in Kidneys which could lead to
Normal is 120/80 mm Hg kidney failure…read more

Slide 6

Preview of page 6

Here's a taster:

Men
BLOOD PRESSURE Next
u
Factors causing high blood pressure include
1. Excess Weight
The circulatory system has to work harder to pump blood around the body
2. High Stress Levels
3. Excess Alcohol
4. Diet high in saturated fat, sugar and salt
Too much salt can raise blood pressure
Too much saturated fat can lead to a build up in cholesterol in the arteries forming plaques. Plaque
builds into lumen restricting or blocking blood flow through the arteries, increasing the risk of a heart
attack.
5. Smoking
Carbon Monoxide is produced which takes the place of oxygen in haemoglobin so the oxygen-
carrying capacity is reduced…read more

Slide 7

Preview of page 7
Preview of page 7

Slide 8

Preview of page 8
Preview of page 8

Slide 9

Preview of page 9
Preview of page 9

Slide 10

Preview of page 10
Preview of page 10

Comments

Pete Langley - Get Revising founder

Outstanding interactive presentation

Hxneul._.Chan

Covers ALL topics of OCR Gateway B1 to get A*?

Beth123456

This really helped. Thank you

Similar Biology resources:

See all Biology resources »See all resources »