ECGs and pacemakers

Question 1

what are action potentials

Answer 1

electrical signals that control the heart muscles . they are generated by the hearts natural pace maker. to make the hearty beat at eh correct rate to supply the body with oxygen it needs.

Question 2

what does a ECG do

Answer 2

measures the changing electrical signals in the heart

Question 3

Explain how action potentials can be measured with an

electrocardiogram (ECG) to monitor heart action

Answer 3

s

Question 4

Relate the characteristic shape of a normal ECG to heart action

Answer 4

s

Question 5

Use the equation:

frequency (hertz, Hz) = 1/time period (second, s)

Answer 5

s

Question 6

describe the purpose of an artificial pacemaker

Answer 6

pacemaker is used to monitor the heart and detect irregular heartbeats. if an irregular heartbeat is detected the pacemaker produces electrical signals to correct the heart rate

Question 7

what do pulse oximeters do

Answer 7

measure the amount of oxygen in the blood. they also measure the pulse rate.