Answer:
1) True
Explanation:
Cells of Sinoatrial (SA) node make up the auto rhythmic cells of heart as in normal physiological conditions , SA-node is responsible to set the pace of the rest of the heart (pacemaker) at a rate of 70 to 80 beats per minute.
The cells of SA node has the ability to self-excite thus able to generate action potential without external stimulation by nerve cells. Thus they initiate the cardiac cycle providing the conduction system.
Hence the statement , SA nodal cells are unique in that they exhibit autorhythmicity, meaning they are capable of depolarizing and firing an action potential spontaneously without any external influence, is true.
The existence of functional localization is supported in part by the fact that <span>the symptoms produced by brain damage depend on exactly where in the brain the damage is located. As studies have shown, the brain is divided into several parts which serve specific behavioral and mental functions.</span>
The answer to the question is letter d
I believe it is the sagittal plane
The answer would be C, "The earth is heated by terrestrial radiation."
Terrestrial radiation is a factor in what heats up the earth and it's a major factor in the study of global warming.
