Question

Repolarisation refers to

• A. no change in the negative charge in the conduction cells of the heart
• B. decrease in the negative charge in the conduction cells of the heart
• C. increase in the negative charge in the conduction cells of the heart
• D. none of these

Answer 1

The correct option is C increase in the negative charge in the conduction cells of the heart

Repolarisation refers to an increase in the negative charge in the conduction cells of the heart.
Depolarisation refers to a decrease in the negative charge in the conduction cells of the heart.
In the resting condition, heart muscle cells are considered to be polarised. This means that there is a net charge density caused by the distribution of positive and negative charges in the inner and outer membranes of the heart muscle cells. Any change in this distribution can be caused due to an action potential which may lead to either repolarisation or depolarisation.