structure of the heart

Question 1

What does the ‘Artery’ & ‘Vein’ do with the blood?

Answer 1

The artery will always take the blood ‘away’ from the heart

The vein will always take blood ‘towords’ the heart

Question 2

Pulmonary

Answer 2

The word Pulmonary is ‘always’ linked the the lungs

Question 3

Vital Area (path way)

Answer 3

Vena cava 
(R)Atrium 
(R)Ventricale
Artery (Pulmonary valve)
Vein (Pulmonary vein)
(L)Atrium 
(L)Ventrical 
Aorta (Aortic valve)

–>Valves provent back flow of vlood

Question 4

There are three types of blood vessels

Answer 4

Arteries - which genarally take blood away from the heart

Veins - which return blood to the heart

Capillaries - distribute blood within the organs

Question 5

Arteries

Answer 5

An artery is a blood vessel taking blood away from the heart.

The Arterys have thicker elastic walls and carry blood in high pressure than veins. Arteries carry arterial or oxygenated blood away from the heart, and they pulsate as the heart beats.

The channel the blood flows through, called the lumen, can widen to allow more blood through the arteries. This happens when you exercise, so that more blood can reach your working muscle more quickly.

Question 6

Veins

Answer 6

A vein is a vessel carrying blood to heart.

Veins have thinner less elastic walls and carry blood in a low pressure than arteries. Veins rarely pulsate.

Veins contain many valves, which keep venous blood flowwing to the the heart, and make sure that it doesn’t flow backwards. There is a tendency for this to happen because venous blood is a much lower pressure than arterial blood.

Question 7

Capillaries

Answer 7

Capillaries are miroscopic vessels - just one cell thick - that link arteries with veins. The blood pressure in capillaries is very low.

At one end, capillaries carry arterial blood, which carry venous blood into the veins, picking up waste produts and takeing them round the body to be disposed of. For example, veins carry carbon dioxide back to the alveoli, to be released into the lungs and breathed out.

Capillaries are where gas exchange takes place. Oxygen goes through the capillary wall and into the tissues, while carbon dioxide passes from the tissues into the blood.