The Cardiovascular System

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Question 1 of 1

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Match the blood vessel to its features

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Veins
Arteries
Capillaries

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Large elastic outer layer, small lumen and a smooth inner layer
One blood cell width, allows diffusion
Thin muscle/elastic tissue layers, valves and a wide lumen

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The pulmonary circulatory system involves the transport of oxygenated blood to the body from the heart and the return of deoxygenated blood from the body to the heart

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Explanation

The systemic circulatory system does this, the pulmonary circulatory system transports deoxygenated blood from the heart to the lungs and oxygenated blood back to the heart

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What is systolic blood pressure?

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Explanation

The pressure in the arteries when the ventricles are relaxing is the diastolic pressure

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Venous return is the return of blood to the left side of the heart via the vena cava

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Explanation

The blood is returned to the right side of the heart

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Match the venous return mechanism to its definition

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Explanation

The suction pump action of the heart also has an effect

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The skeletal muscle pump
The respiratory pump
Pocket valves
Smooth muscle in veins
Gravity

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When muscles contract during breathing pressure changes occur in the thoratic and abdominal cavities. These changes compress nearby veins and assist blood return to the heart
Helps blood return to heart from upper body
Ensures blood flows in one direction as they close once blood has passed through to prevent backflow
Muscles change shape when they contract and relax and this means they press on veins and squeeze blood toward the heart
Squeezes blood back to the heart

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When fully saturated, how many oxygen particles will haemoglobin carry?

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The beat starts in the heart with an electrical signal in the

this impulse spreads through the heart in a

This impulse spreads through the atria and causes them to contract. The impulse passes through the

Then the impulse passes down specialised fibres which form

this branches out into two bundle branches then smaller bundles called

which spread through the ventricles causing them to contract.

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The left side of the heart is bigger

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Explanation

Because it needs to pump blood all around the body

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Chemoreceptors
Proprioceptors
Baroreceptors

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Detect changes in blood pressure to either increase or decrease heart rate
Detect changes in blood acidity caused by a change in carbon dioxide concentrations
Detect changes in muscle movement

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Which part of the autonomic nervous system increases heart rate?

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Adrenaline stimulates the AVN

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Explanation

Adrenaline stimulates the SAN as it leads to an increase in heart rate

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Stroke volume is

It depends on

(which is the volume of blood returning to the heart via the veins)

and

(which is concerned with the stretch of cardiac tissue during the diastole phase)

and

(which affects the force of contraction and thus stroke volume)

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What is bradycardia?

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Athlerosclerosis
Atheroma
Angina
Ischaemic stroke
Haemorrhagic stroke

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When blood supply to the brain is cut off by a blood clot
A fatty deposit found in the inner lining of an artery
Chest pain that occurs when the blood supply through the coronary arteries to the muscles of the heart is restricted
Occurs when arteries harden and narrow as they become clogged up by fatty deposits
When blood supply to the brain is cut off when a weakened blood vessel supplying the brain bursts

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LDL are known as 'bad' cholesterol

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Explanation

HDL is known as good cholesterol as it transports excess cholesterol to the liver to be broken down whereas LDL transports cholesterol to the tissues and increases risk of heart disease

The Cardiovascular System

Question 1 of 1

Time Left

Match the blood vessel to its features

Match the text (click and drag)

(0/0)

Veins

Arteries

Capillaries

Large elastic outer layer, small lumen and a smooth inner layer

One blood cell width, allows diffusion

Thin muscle/elastic tissue layers, valves and a wide lumen

The pulmonary circulatory system involves the transport of oxygenated blood to the body from the heart and the return of deoxygenated blood from the body to the heart

Select the correct answer(s).

(0/0)

Explanation

What is systolic blood pressure?

Select the correct answer(s).

(0/0)

Explanation

Venous return is the return of blood to the left side of the heart via the vena cava

Select the correct answer(s).

(0/0)

Explanation

Match the venous return mechanism to its definition

Match the text (click and drag)

(0/0)

Explanation

The skeletal muscle pump

The respiratory pump

Pocket valves

Smooth muscle in veins

Gravity

When muscles contract during breathing pressure changes occur in the thoratic and abdominal cavities. These changes compress nearby veins and assist blood return to the heart

Helps blood return to heart from upper body

Ensures blood flows in one direction as they close once blood has passed through to prevent backflow

Muscles change shape when they contract and relax and this means they press on veins and squeeze blood toward the heart

Squeezes blood back to the heart

When fully saturated, how many oxygen particles will haemoglobin carry?

Select the correct answer(s).

(0/0)

Fill in the blanks

Fill in the blanks

(0/0)

The left side of the heart is bigger

Select the correct answer(s).

(0/0)

Explanation

Match the receptor to the correct function

Match the text (click and drag)

(0/0)

Chemoreceptors

Proprioceptors

Baroreceptors

Detect changes in blood pressure to either increase or decrease heart rate

Detect changes in blood acidity caused by a change in carbon dioxide concentrations

Detect changes in muscle movement

Which part of the autonomic nervous system increases heart rate?

Select the correct answer(s).

(0/0)

Adrenaline stimulates the AVN

Select the correct answer(s).

(0/0)

Explanation

Fill in the blanks

Fill in the blanks

(0/0)

What is bradycardia?

Select the correct answer(s).

(0/0)

Match the term to its definition

Match the text (click and drag)

(0/0)

Athlerosclerosis

Atheroma

Angina

Ischaemic stroke

Haemorrhagic stroke

When blood supply to the brain is cut off by a blood clot

A fatty deposit found in the inner lining of an artery