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How would damage to the sinoatrial node affect the heart's function?
The heart wouldn't beat at a constant rate.
What is the primary brainstem structure that controls heart rate?
medulla oblongata
What causes a fast heart rate?
exercise, drugs, excitement, health problems,
How does depressants affect the heart rate?
depressants affect the heart rate by its heart rate
Is 66 a good heart rate?
The normal heart rate for an adult is between 60 and 101. Thus, a heart rate of 66 - in my opinion - is very good.The normal heart rate for an adult is between 60 and 101. Thus, a heart rate of 66 - in my opinion - is very good.The normal heart rate for an adult is between 60 and 101. Thus, a heart rate of 66 - in my opinion - is very good.The normal heart rate for an adult is between 60 and 101. Thus, a heart rate of 66 - in my opinion - is very good.The normal heart rate for an adult is between 60 and 101. Thus, a heart rate of 66 - in my opinion - is very good.The normal heart rate for an adult is between 60 and 101. Thus, a heart rate of 66 - in my opinion - is very good.
What does a pacemaker control in the heart?
A pacemaker sends electrical shocks to the heart to beat it at a particular speed. It pulsates the heart at a set rate (eg. 60bpm) to help those who are have a slower than normal heartbeat.
What sends impulses from the accelerator center to increase heart rate?
Sympathetic
What creates heart rate?
Heart rate is simply the number of times that the heart beats per minute. This is generated by the "pacemaker" of the body which is the signal sent from the brain to the heart's sinoatrial (SA) node. This causes the initiation of contraction of the cardiac muscle which spreads across the heart to contract the atria and ventricles in a rhythmic fashion. The number of times this signal is sent from the brain to the heart gives the heart rate.
How would damage to the sinoatrial node affect the heart's function?
The heart wouldn't beat at a constant rate.
What is the primary brainstem structure that controls heart rate?
medulla oblongata
Group of cells receive messages about body's oxygen needs and sends out signals to adjust the heart rate?
pacemaker
What is the primary brain stem structure that controls the heart rate?
medulla oblongata!
What are some factors that cause an increase in the pulse rate?
There are a number of factors but basically pulse rate gets increased by heart rate which can get increased by any number of things. Basically it all travels through the brain so the brain stimulates how fast the heart and pulse rate are. That's why if you're working out or something like that your brain registers that you're body needs more blood to be able to keep the oxygen flowing through your veins and into your muscles, therefore it sends down a signal to the heart to start pumping harder which in turn makes your pulse rate faster. Of course that is also why mental states can make your heart beat faster because of nervousness or excitement. Any number of things can make your pulse rate faster but the main factor that increases the rate is the heart and the brain.
What causes a fast heart rate?
exercise, drugs, excitement, health problems,
Does the heart rate change as you listen to music?
Absolutely. Well, your heart rate will speed up when you get excited so when you listen to a really good song and you get pumped, you brain sends signals to your heart. therefore it will speed your heart up, so .. really it more music over brain, brain over heart, heart over pulse. I hope that helps. =)
How has energy saved lives?
When doctors use a heart defibrillator it sends energy currents through the body and helps restore a normal heart rate or will send currents to the heart to get it working again thus preventing death.
Does taking a deep breath and holding it affect your heart rate?
No, 'fraid not. Your nerves connect with the brain and the heart structure. So the only time when you heart rate changes is when your brain tells it to. For example: when your heart skips a beat (believe it or not, it can actually happen!). Hope this helped! :)
