Regulation of the heart
What can decrease the heart Rate?
Parasympathetic branch
Where is located the Sinoatrial node?
In upper right portion of right atrium
What is the definition of Depolarization?
Is a change within a cell, during which the cell undergoes a shift in electric charge distribution, resulting in less negative charge inside the cell.
What is the Cardiac cycle?
The cardiac cycle is the performance of the human heart from the ending of one heartbeat to the beginning of the next.
what do electrical system of the heart control?
controls the timing of your heartbeat by regulating your:
What can increase the heart rate?
Sympathetic branch
Where do normal conductions begins?
Sinoatrial node
What is the definition of Repolarization?
Is the change in membrane potential that returns it to a negative value just after the depolarization phase of an action potential which has changed the membrane potential to a positive value.
What is the definition of cardiovascular system?
The cardiac cycle is the performance of the human heart from the ending of one heartbeat to the beginning of the next
Your heart electrical system should maintain in what rate?
A steady heart rate of 60 to 100 beats per minute at rest. The heart's electrical system also increases this rate to meet your body's needs during physical activity and lowers it during sleep
What is the definition of autonomic nervous system?
Is a control system that acts largely unconsciously and regulates bodily functions, such as the heart rate, digestion, respiratory rate, pupillary response, urination, and sexual arousal.
Which is the node who causes delay in electrical impulse allowing blood to travel ventricles?
atrioventricular
In repolarization is true that cell return to a resting? True or False?
True
Isovolumic relaxation, inflow, isovolumic contraction and ejection
The heart happens as follow?
What are the three branches of the autonomic nervous system?
Sympathethic nervous system
parasympathethic nervous system
enteric nervous system
What do bundle of his transfer?
Transfers electrical impulses from the atria to the ventricles via bundle branches
State of stimulation proceding contraction and electrical activiation of heart cca its because of what?
Depolarization
In what can be divided the cardiac cycle events?
diastole and systole
What are two different types of cell in your heart enable the electrical signal to control your heart?
Which is the system that is the primary mechanism in control of the fight-or-flight response?
autonomic nervous system
Do bundle branches split the electrical impulse down the right and left side? True or False?
True
Heart relaxes by no allowing for refilling or the chambre? True or False
False
How long is a cardiac cycle?
The average adult person at rest has 65 to 75 heartbeats (cardiac cycles) per minute. One complete cardiac cycle takes about 0.8 seconds. Atrial systole, where the atria contract and eject blood into ventricles, lasts about 0.1 seconds.
What causes heart electrical problems?
These include: Coronary artery disease, other heart problems and previous heart surgery. Narrowed heart arteries, a heart attack, abnormal heart valves, prior heart surgery, heart failure, cardiomyopathy and other heart damage are risk factors for almost any kind of arrhythmia. High blood pressure.