Soc 16 : The Structure Of The Blood Vessels

Question 1

What are the 4 main characteristics of arteries ?

Answer 1

• take blood away from the heart
• arteries have got thick elastic walls due to high pressure by carrying oxygenated blood
• the channel the blood flows through , the lumen can widen to allow more blood through
• the pulmonary artery is the only artery that carrys deoxygenated blood from the heart to the lungs .

Question 2

What are the 4 main characteristics of the veins ?

Answer 2

• veins carry blood into the heart
• veins have much thinner walls , are less elastic carrying blood at a far lower pressure
• veins contain many valves to help them get blood to the heart without the blood flow going backwards
• the pulmonary vein is different to the other veins as it carries oxygenated blood from the lungs to the heart

Question 3

What are the 4 mains characteristics of the capillaries ?

Answer 3

• capillaries are microscopic vessels - only one cell thick
• at one end , capillaries carry oxygenated blood which transfers oxygen and nutrience into the muscle cells
• at the other end , they carry deoxygenated blood into the veins , picking up waste products
• capillaries are where gaseous exchange takes place

Question 4

Name all of the parts of the right side of the heart from top to bottom ? ( Think Right side flipped)(7)

Answer 4

• Aorta
• superior Vena cava
• semilunar valves
• right atrium
• tricuspid valve
• inferior vena cava
• right ventricle

Question 5

Name all the parts of the left side of the heart from top to bottom ? (Think left = right flipped) (6)

Answer 5

• pulmonary artery
• pulmonary vein
• left atrium
• semilunar valves
• bicuspid valve
• left ventricle

Question 6

What is your immune system ?

Answer 6

the structures and processes in your body that stop disease.

Question 7

What is thrombokinase ?

Answer 7

substance involved in blood clotting.

Question 8

What is serotonin ?

Answer 8

hormone that triggers the clotting process.

Question 9

What is erythrocyte ?

Answer 9

red blood cell.

Question 10

What is haemoglobin ?

Answer 10

a red protein in the blood that transports oxygen.

Question 11

What is amaemia ?

Answer 11

a condition where there is a lack of red cells or haemoglobin in the blood.

Question 12

What is leukocyte ?

Answer 12

white blood cell.

Question 13

What is a pathogen ?

Answer 13

an agent that causes disease, such as a virus

Question 14

What is an anti-body ?

Answer 14

chemical that destroys a pathogen.