Soc 16 The Structure Of Blood Vessels/Heart

Question 1

Veins

Answer 1

.viens carry deoxygenated blood into the heart
.viens are less elastic walls

Question 2

Capillaries

Answer 2

• microscopic vessels- one cell thick
• At one end, capillaries carry oxygenated blood which transfers oxygen and nutrient to the muscles (e.g. waiter)
• at the other end they carry deoxygenated blood into the veins picking up waste products, taking them around the body to dispose of the
• Capillaries are where gaseous exchange takes place

Question 3

Arteries

Answer 3

Take blood away
Have thick walls and are more elastic than veins as they carry blood which is a high pressure than as they carry oxygenated blood
The channel the blood flows throughcalleebthe lumen can widen to allow more blood through when you so tyatbwhen you excersize it can reach the working muscles

Question 4

Erythocyte

Answer 4

Red blood cell

Question 5

Haemoglobin

Answer 5

A red protein in the blood that transports oxygen

Question 6

Anaemia

Answer 6

A condition where there is a lack of red blood cells or heamoglobin in the blood

Question 7

Immune system

Answer 7

The structures and processes in your body that stop disease

Question 8

Leukocyte

Answer 8

White blood cells

Question 9

Pathogen

Answer 9

An agent that causes disease such as a virus

Question 10

Thrombokinase

Answer 10

Substance involved in blood clotting

Question 11

Antibody

Answer 11

Chemical that destroys a pathogen

Question 12

Serotonin

Answer 12

Hormone that triggers the clotting process

Question 13

Plasma

Answer 13

The fluid part of blood