revision list

Question 1

function of respiratory system

Answer 1

allows you to breath by bringing oxygen to the lungs and removing carbon dioxide

Question 2

function circulatory system

Answer 2

it relies on the heart, blood vessels and blood

Question 3

Why does Heart rate increase during exercise?

Answer 3

the heart beats faster so that more blood gets out to your body

Question 4

• Besides exercise what other factors can affect heart rate?

Answer 4

age, gender, stress, and diet

Question 5

Define maximal oxygen uptake (VO2 Max)

Answer 5

Maximal amount of oxygen you can use within the body over one minute.

Question 6

Define gaseous exchange

Answer 6

oxygen moves from the lungs to the bloodstream. At the same time carbon dioxide passes from the blood to the lungs

Question 7

What is the role of Haemoglobin?

Answer 7

It contains iron, it picks up oxygen from the air we breathe and deliver it everywhere in the body

Question 8

Describe the pathway of blood through the heart and to the lungs and body

Answer 8

Blood comes into the right atrium from the body, moves into the right ventricle and is pushed into the pulmonary arteries in the lungs. After picking up oxygen, the blood travels back to the heart through the pulmonary veins into the left atrium, to the left ventricle and out to the body’s tissues through the aorta.

Question 9

Describe the pathway of oxygen from the atmosphere to the lung

Answer 9

When you inhale through your nose or mouth, air travels down your pharynx (back of your throat), passes through your larynx (voice box) and into your trachea

Question 10

systemic circuit -

Answer 10

is the main circuit, it carries oxygenated blood around the body in the arteries, and deoxygenated blood back to the heart along the veins

Question 11

Pulmonary circuit-

Answer 11

includes the heart and lungs, it carries deoxygenated blood from the heart to the lungs to be oxygenated. The blood then goes back to the heart to be pumped around the systemic circuit.

Question 12

Define cardiac output and how it can be calculated

Answer 12

it is the amount of blood pumped out by the heart in one minute
calculated - (cardiac output Q= stroke volume SV x heart rate HR)

Question 13

Define stroke volume

Answer 13

the amount of blood that is pumped out of the left ventricle each beat measured in ml/beat

Question 14

Describe what blood pressure is.

Answer 14

the pressure of blood pushing against the walls of your arteries.

Question 15

• Diastole is,

Answer 15

when your heart is at rest during the relaxation phase of the heart’s pumping action it fills the left ventricle with blood

Question 16

the systole system is

Answer 16

when the heart is contracting during the contractile phase of the heart’s pumping action.

Question 17

What a normal blood pressure reading

Answer 17

it should be
less than 120/80 mmHg.

Question 18

Which part of the reading is systolic,

Answer 18

Systolic blood pressure is the top number, measures the force the heart exerts on the walls of the arteries each time it beats.

Question 19

Which part of the reading is diastolic

Answer 19

Diastolic blood pressure, the bottom number, measures the force the heart exerts on the walls of the arteries in between beats.

Question 20

What can cause high blood pressure

Answer 20

Age ,Gender, Stress, Diet , Exercise

Question 21

What happens to the intercostal muscles and diaphragm and what do they allow to happen during inhalation?

Answer 21

During inhalation the intercostal muscles between the ribs contract, pulling the chest walls up and out.

Question 22

What happens to the intercostal muscles and diaphragm and what do they allow to happen during exhalation?

Answer 22

During exhalation Intercostal muscles between the ribs relax so that the chest walls move in and down.