Answer Both questions down below thanks The role of the bund

Answer Both questions down below thanks.

The role of the bundle of his, bundle branches, and purkinje fibers is to A Help conduct the electrical pulse (action potential) to the top of the heart first before allowing the contraction to spread to the atria. B.Help conduct the electrical pulse (action potential to the whole ventricle C. Help conduct the electrical pulse (action potential) to the bottom of the heart first to allow it to spread from the bottom to the top of the heart. D.to allow the electrical pulse (action potential to pause for 0.1s before spreading to the ventricle.

Solution

The role of the bundle of his,bundle branches and purkinji fibres is to-

c) Help conduct the eclectrical pulse (action) potential to the bottom of the heart first to allow it to spread from the bottom of the top of the heart.

The contration gradient of sodium and potasium across the cell membrane is estblished through the activity of NA/K ATPase-TRUE

Note- Ion pumps use cellular energy (ATP) to \"pump\" the ions against their concentration gradient. Such ion pumps take in ions from one side of the membrane and release them on the other side (increasing its concentration there). The sodium–potassium pump transports three sodium ions out of the cell and two potassium ions in.