MEDICAL
HEART AND PERICARDIUM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Action Potentials:
|
|
Pacemaker Potential
|
|
|
Threshold
|
|
|
Action Potential
|
|
|
Fast K+ Outflow
|
|
|
Fast Ca++/Na+ Inflow
|
|
|
Slow Na+ Inflow
|
Explanation:
Detailed explanation-1: -Sodium ions play an important role in the generation of action potential. When a nerve fibre is stimulated, the membrane potential decreases. The membrane becomes more permeable to Na+ ions than to K+ ions. As a result, Na+ diffuses from the outside to the inside of the membrane.
Detailed explanation-2: -Voltage-gated sodium channels are responsible for the fast action potentials involved in nerve conduction. Slower action potentials in muscle cells and some types of neurons are generated by voltage-gated calcium channels.
There is 1 question to complete.