1b

Question 1

Explain the journey of blood

Answer 1

Superior and inferior vena cavas ➡️ right atrium ➡️ tricuspid valve ➡️ right ventricle ➡️ pulmonary valve ➡️ pulmonary artery ➡️ lungs

Pulmonary vein ➡️ left atrium ➡️ bicuspid valve ➡️ left atrium ➡️ aortic valve ➡️ aorta ➡️ around body

Question 2

Two characteristic of arteries

Answer 2

Small lumen, high pressure

Question 3

Two adaptations of alveoli

Answer 3

Large surface area, thin walls

Question 4

Define cardiac output

Answer 4

Amount of blood that the heart is able to pump out per minute

Question 5

Two characteristic of capillaries

Answer 5

Thin walls, rich blood supply

Question 6

Name the 9 components of the respiratory system

Answer 6

Nose, mouth, pharynx, Larynx, trachea, lungs, bronchi, bronchioles, alveoli

Question 7

Equation for cardiac output

Answer 7

Heart rate times by stroke volume

Question 8

What two gases are exchanged in gaseous exchange

Answer 8

Oxygen and carbon dioxide

Question 9

What is the role of the haemoglobin

Answer 9

Carries oxygen and carbon dioxide around the body

Question 10

Define tidal volume

Answer 10

The volume of air breathe in or out during a normal breath

Question 11

Define vasodilation and vasoconstriction

Answer 11

Vasoconstriction= stops blood flow
Vasodilation= allows blood flow