Answer:
No it cannot it is impossible for it to spread to humans
Answer:
The blood returns to the heart through veins.
Explanation:
Blood returns to the heart from the body through the Vena Cava and from the lungs through the Pulmonary Vein . So mainly blood returns to the heart through Veins.
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Conduct research: she can find what the cause of her distraction is.
test the design: she then tries to complete her homework without whatever thing she found in the first step.
Answer AND Explanation:
Stimulation of the membrane causes it to become highly permeable to sodium ions, which diffuse rapidly to the inside due to the concentration gradient. The inside of the membrane becomes positively charged and the outside negatively charged. The membrane is then said to be depolarized. This constitutes the action potential. The reverse of the polarity of the membrane causes the beginning of repolarization.