How does the refractory period protect the heart?
During the refractory period, the cardiac cell cannot fire another action potential even if a stimulus is received. Sodium channels become inactive, which is why another action potential is not triggered. The rest period allows the heart to beat with a controlled and steady rhythm.
What happens during the refractory period?
During the refractory period, a male is unable to get an erection or ejaculate again. This physiological response usually accompanies a psychological refractory period, during which the person feels uninterested in sex.
What causes a refractory period?
In its wake, the action potential leaves the Na+ channels inactivated and K+ channels activated for a brief time. These transitory changes make it harder for the axon to produce subsequent action potentials during this interval, which is called the refractory period.
What is a refractory period in ECG?
In electrocardiography, during a cardiac cycle, once an action potential is initiated, there is a period of time that a new action potential cannot be initiated. This is termed the effective refractory period (ERP) of the tissue.
What occurs during the refractory period psychology quizlet?
a brief time period after an action potential has been initiated during which an axon is either incapable of generating another action potential. The excitable plasma membrane recovers at this time and becomes ready to respond to another stimulus. You just studied 14 terms!
Which of the following takes place during the refractory period?
a brief time period after an action potential has been initiated during which an axon is either incapable of generating another action potential. The excitable plasma membrane recovers at this time and becomes ready to respond to another stimulus.
What is absolute refractory period in physiology?
Medical Definition of absolute refractory period : the period immediately following the firing of a nerve fiber when it cannot be stimulated no matter how great a stimulus is applied. — called also absolute refractory phase. — compare relative refractory period.
What channels are open during refractory period?
While the K+ channels are open, the cell is in the relative refractory period. Only a very large depolarization will cause a signal, because as the Na+ flows in, in an attempt to create an action potential, the K+ will flow out, short-circuiting the attempt.
What happens during action potential refractory period?