Sinoatrial node part of the autonomic nervous system adjusts the heart rate and the arteriole diameter to regulate blood pressure through negative feedback
The SA (sinoatrial) node is generates an electrical signal that can causes the upper heart of the chambers (atria) to contract. The signal and then passes through the AV (atrioventricular) node to the lower of the heart chambers (ventricles), causing them to contract, or to pump. The SA node is considered the pacemaker of heart.
The sinus node continuously generates electrical impulses, thereby setting the normal rhythm and also rate in a healthy heart. Hence, the SA node is also referred to as the natural pacemaker of the heart
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Answer:
Fundamental rights are the basic rights like : the right to food , shelther and clothes which are essential for our survival. We need them to survive happily with atleast the basic things.
Answer:Plymouth in November 1621
The
following choice that contributed to rural poverty is letter B: corporate
farming. <span>Corporate
farming are companies owning or has influence in farms and agricultural
practices on a large scale. Though it helps in rural employment, the ownership
on the farms is very critical.</span>
One basic difference between "labor" and "entrepreneur" is that: Labor is hired by a firm whereas the entrepreneur owns the firm.
