Circulation

Question 1

Structure of thromboplastin

Answer 1

Large soluble protein

Question 2

Thrombin

Answer 2

Soluble protein

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Question 3

Fibrinogen

Answer 3

Soluble plasma protein

Question 4

How is a heart attack caused

Answer 4

Prevents the oxygen from reaching the heart muscle
Prevent aerobic respiration
Prevents the cardiac muscle from contracting

Question 5

Define myogenic

Answer 5

Stimulation generated from within the muscle resulting in depolarisation

Question 6

How does ECG measure heart rate

Answer 6

Shows the electrical activity of the heart during the cardiac cycle
Measure from 1 P wave to the next to find out one heart bate
Find out how long one set of electrical activity takes to move onto the next
Heart rate = beats divided by tine

Question 7

How does high blood pressure increase the risk of CVD

Answer 7

Damage to endothelial lining in the arteries
This will cause an immflammatory response
Which leads to the formation of plaque which increases the risk of blood clot formation
Leading to loss of elasticity in the arteries
Leading to further increase in bp

Question 8

What Is on the y axis of ecg raphs

Answer 8

Mv

Question 9

Why would red blood cells have no effect on sprinters

Answer 9

Red blood cells carries oxygen
Low number of mitochondria in fast twitch muscle fibres
Fast twitch fibres are predominatly anaerobic

Question 10

Function of anticoagulants

Answer 10

Prevents formation of blood clot
Reduces effectiveness of platelets
Risk of blood vessels being blocked is reduced