Cardio-respiratory GCSE PE OCR

Oxygenated blood is pumped from the left ventricle to...

• the Lungs

• the heart

• the body / working muscles

• the brain

Name the two circuits in the double-pump system.

• Aorta, vena cava.

• heart and lungs.

• Systemic and pulmonary.

• Systemic and septum.

There are 3 blood vessels, can you name them all.

• Veins

• Arteries

• Alveoli

• Capillaries

Which blood vessel has the thickest lumen ?

• Veins

• Capillaries

• Red blood cell

• Arteries

Why do capillaries have a wall which is one cell thick?

• To allow gaseous exchange to take place

• To cope with high pressure

• To allow red blood cells through

• So they can stretch further

The left ventricle of the heart has a thick wall, why?

• To keep germs out.

• To be strong enough to beat against the ribcage.

• To get the blood to the lungs quickly.

• To pump the oxygenated blood all around the body at high pressure.

What separates the left and right side of the heart to prevent the oxygenated and deoxygenated blood from mixing?

• Septum

• Valve

• Aorta

• Pulmonary vein

What are the 3 key terms for Cardiovascular system?

• Breathing Rate

• Heart Rate

• Stroke Volume

• Cardiac Output

Which major blood vessel carries deoxygenated blood AWAY from the heart to the lungs? (Clue: pulmonary suggests a link to the lungs.)

• Aorta

• Pulmonary Artery

• Vena Cava

• Septum

Red blood cells contain haemoglobin. What is their job?

• To clot the blood so we don't bleed out.

• To fight infection.

• To mix with water and fill our vessels.

• To carry oxygen in the blood stream.