B7 - Blood, Tissue Fluid and the Skeletal System

Question 1

What three things in blood made up of?

Answer 1

White Blood Cells
Red Blood Cells
Platelets
Plasma

Question 2

What is the job of Red Blood Cells?

Answer 2

To transport oxygen from the lungs to the rest of the body

Question 3

What are the properties of Red Blood Cells?

Answer 3

Have no nucleus
Have space for haemoglobin
Biconcave shape (large surface area to exchange oxygen)

Question 4

What is haemoglobin?

Answer 4

A substance thaht binds with oxygen

Question 5

What 4 things does Plasma carry?

Answer 5

Nutrients (e.g glucose)
Antibodies
Hormones
Waste (e.g CO2)

Question 6

What is the job of White Blood Cells?

Answer 6

TO help your body fight infection against microorganisms

Question 7

What is the job of Platelets?

Answer 7

To help the blood clot at wounds

Question 8

What does the first part of the circulatory system do?

Answer 8

Pump deoxygenated blood to the lungs and then returns to the heart

Question 9

What does the second part of the circulatory system do?

Answer 9

Pump oxygenated blood to the body and then back to the heart

Question 10

What is the function of the right atrium?

Answer 10

It receives deoxygenated blood from the body through thhe vena cava

Question 11

What is the function of the right ventricle?

Answer 11

It pumps deoxygenated blood to the lungs through the pulmonary artery

Question 12

What is the function of the left atrium?

Answer 12

It receives oxygenated blood from the lungs through the pulmonary vein

Question 13

What is the function of the left ventricle?

Answer 13

It pumps oxygenated blood to the body through the aorta

Question 14

What is the function of valves in the heart?

Answer 14

They prevent backflow of blood

Question 15

What is the function of the two coronary arteries?

Answer 15

They supply the heart muscle cells with blood

Question 16

Which ventricle in the heart is thicker and why?

Answer 16

The left ventricle is thicker because it has to pump blood all the way around the body but the right ventricle only pumps it to the lungs

Question 17

What is the main property of Capillaries?

Answer 17

They have permeable walls so substances can diffuse in and out

Question 18

What happens as blood passes through capillary beds?

Answer 18

Small molecules (e.g water, glucose and oxygen) are forced out of the capillaries to form the tissue fluid surrounding the cells, which can then diffuse into the cells.

Question 19

What happens to waste chemicals in cells?

Answer 19

They diffuse out of the cells into the tissue fluid and then diffuse into the capillaries

Question 20

What is the job of Tissue Fluid?

Answer 20

To get substances the cells need in and to get substances they don’t need out

Question 21

What are the 2 main jobs of the Skeleton?

Answer 21

To support the body and allow it to move

To protect the vital organs

Question 22

What is the job of Ligaments?

Answer 22

To hold together bones at a joint

Question 23

What is the job of Cartilage?

Answer 23

Reduces friction between bones at the edges, and cushions the bones from shock

Question 24

How are joints lubricated and what does this do?

Answer 24

Membranes release oily synovial fluid

It reduces friction and aids movement

Question 25

What is the job of Tendons?

Answer 25

To attach bones to muscles, and also to attach muscles to muscles

Question 26

What are pairs of muscles called?

Answer 26

Antagonistic pairs

Question 27

What are the two different types of joint?

Answer 27

Ball-and-socket joints

Hinge joints