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Suggest why an artificial pacemaker can be used to treat AF.

An artificial pacemaker would generate regular electrical impulses in the atria. The regular electical impulses from the pacemaker are stronger than the irregular impulses from the SAN, therefore the ventric...
AH
4447 Views

Suggest why people who have Atrial Fibrillation (AF) have an irregular pulse.

Atrial fibrillation (AF) is an abnormal condition of the heart. In AF, irregular electrical impulses in the walls of the atria interrupt the normal regular impulses from the SAN. This means that the AVN and ...
AH
7560 Views

If there are 30 bases of cytosine in DNA, then how many bases of thymine are there?

Ok, so complementary base pairing occurs within DNA -- cytosine and guanine, adenine and thymine. So if there is 30 bases of cytosine then there MUST be 30 bases of guanine which then equals 60. So to make a...
EM
19630 Views

What is the difference between aerobic and anaerobic respiration?

The main difference between aerobic and anaerobic respiration is that anaerobic does not require oxygen in order to provide energy whereas aerobic needs oxygen to supply the body with ATP energy. However, th...
AJ
13828 Views

What is a spinal reflex arc?

An unconscious motor response to a sensory stimulus . Sensory stimulus : An external factor that has stimulated and started an impulse (Action potential) in sensory nerves. There are lots of different types ...
JB
12778 Views