0
Heart
The heart is a major organ of the body that is found in the circulatory system. It pumps blood throughout the blood vessels. Questions related to the heart should be put here.
8,781 Questions
If your brain stops will your heart stop?
Yes. Your brain controls everything, including the heart, so if the brain stops, then you will forget how to breath.
AnswerIf your brain completely stops functions, your heart will stop.
However, in many cases the higher functions of the brain fail while the basic housekeeping functions continue to work. In that case you may be in a vegetative state, unable to think or recognize your surroundings, but your brain still tells your heart to beat and your lungs to breath.
Comment on my new answer
Oh yeah, I agree.
What structures transmit the heart impulse from the av node to the ventricle?
Bundle of His
atrioventicular bundle (bundle of his), right and left bundle bramches and the purkinge conducition fibers
Why are atria passive chambers while the ventricles are active?
I dont know. This is a question to my homework right now
If a person is unconscious how can you tell if there heart still beating?
smack them and see if they respond
Which parts of the heart can be replaced when they go wrong?
It is possible to replace the entire heart under some circumstances. It's also possible to replace the valves and coronary arteries.
Why are valves unidirectional?
Functionally, a valve can only control whether or not a channel isopen. If open, flow goes from high pressure to low.
In the venous and lymphatic system the need is to move fluid one direction only in a system where the surrounding pressures fluctuate. Mother Nature fashioned a moving barrier, the valve, with flexible flaps that point downstream. Any back-flow tendency (higher pressures in the direction of the heart) will catch the flaps and flip them closed. As soon as pressure on the inlet side (the extremities) increase, the flaps relax, flop open, and allow downstream flow.
What is the job of your hearts left atrium?
To act as a "turbocharger" in order to increase the amount of blood that enters the left ventricle for distribution to the systemic circuit.
It is not needed to sustain life, albeit poor quality of life, as demonstrated in patients with atrial fibrillation, but if not functioning correctly will significantly reduce cardiac output, leading to cyanosis (blueness) of the lips, breathlessness and fatigue.
-Medical student.
Is it only with the heart that one can see rightly mean?
..,it means that a pure heart makes spark to one's eyes. Physical aspect doesn't matter. What makes a person beautiful is having a heart full of compassion and pure love. ..one person must look with the heart......^^
During ventricular systole are AV valves closed?
yes during ventricular systole AV valves are closed.
How has size shape and location affected England's development?
Size and shape have not had much impact on England's development, however location had a huge impact on England's development. England became a mecca of trade, culture, wealth and exploration. All of these factors resulted from the fact that England is an island with access to continental Europe.
What happens if part of the heart dies but the person doesn't?
When the heart dies the person is dead.
Is the brain superior to the heart?
Since the brain is located above the heart, it is superior to the heart.
Does an amphibian's heart pump out a mixture of oxygen-rich and oxygen-poor blood?
The amphibian's heart does pump out a mixture of oxygen-rich and oxygen-poor blood. They are vertebrates, and this is how vertebrates' circulatory systems work.
