Cardio-Respiratory

Question 1

What does a P wave represent?

Answer 1

Atrial depolarisation

Question 2

What does a QRS complex represent?

Answer 2

Ventricular depolarisation

Question 3

What does a T wave represent?

Answer 3

Ventricular repolarisation

Question 4

What does a P-R interval represent?

Answer 4

From beginning of P wave to the start of the QRS complex and represents the time from the SAN through the AVN

Question 5

What does a Q-T interval represent?

Answer 5

Beginning of QRS to end of T wave

Question 6

What is functional vital capacity (FVC)?

Answer 6

Amount of air which can be forcibly exhaled from the lungs after taking the deepest breath possible

Question 7

What is tidal volume?

Answer 7

Normal volume of air breathed in/out

Question 8

What is residual volume (RV)?

Answer 8

Amount of air left after maximal expiration

Question 9

What is functional residual capacity (FRC)?

Answer 9

Volume of air present in the lungs at the end of passive expiration; ERV + RV

Question 10

What is expiratory reserve volume?

Answer 10

Amount of additional air that can be forced out

Question 11

What is inspiratory reserve volume?

Answer 11

Amount of extra air that can be inhaled

Question 12

How do you calculate inspiratory capacity?

Answer 12

Tidal volume + inspiratory reserve volume

Question 13

How do you calculate vital capacity?

Answer 13

Inspiratory reserve volume + expiratory reserve volume + tidal volume

Question 14

How do you calculate total lung capacity?

Answer 14

Inspiratory reserve volume + expiratory reserve volume + tidal volume + residual volume

Question 15

What is forced expiratory ratio 1 (FEV1)?

Answer 15

Maximum exhalation volume in 1 second