Chapter 8

Question 1

Hydrostatic Pressure

Answer 1

The pressure that removes all the blood from the capillaries when transferring blood among vessles

Question 2

What is tissue fluid
3 points

Answer 2

Is a liquid containing dissolved oxygen and nutrients

which serves as supplying the tissues with the essential solutes

in exchange for waste products such as
carbon dioxide

Question 3

3 features of a blood vessle

Answer 3

Elastic fibres

Smooth Muscle

Collagen

Question 4

What are capillaries

Answer 4

Microscopic blood vessles that links the areterioles to the venules

Question 5

What are venules

Answer 5

Connect veins and capillaries

Question 6

What are arterioles

Answer 6

connect arteries and capillaries

Question 7

What is haemoglobin’s structure

Answer 7

a very large globular conjugated protein made up of 4 peptide chains

Question 8

Which side does oxygenated blood go to in the heart

Answer 8

left side

Question 9

what is the heart made up of

Answer 9

cardiac muscle

Question 10

where does deoxygenated blood enter from

Answer 10

the right atrium

Question 11

why does the right side of the heart have thin walls

Answer 11

the deoxygenated blood is low pressure

Question 12

What is the first cycle of the cardiac cycle called

Answer 12

atrial systole

Question 13

Explain the first cycle of the cardiac cycle

Answer 13

Atrial systole

the atria contract

forces the valves open

blood flows into the ventricles.

Question 14

What is the 2nd cycle of the cardiac cycle called

Answer 14

Ventricular systole

Question 15

Explain the 2nd cycle of the cardiac cycle 3 points

Answer 15

contraction of the ventricles causes
the valves to close

the semi-lunar valves open

blood leaves the left ventricle through the aorta and right ventricle through the
pulmonary artery

Question 16

What is the 3rd cycle of the cardiac cycle called

Answer 16

Cardiac diastole

Question 17

Explain the 3rd cycle of the cardiac cycle 5 points

Answer 17

atria and ventricles relax

elastic recoil of the heart lowers the pressure inside the heart chambers

blood is drawn from the arteries and veins

causesvalves in the aorta and pulmonary arteries to close

preventing backflow of blood.