Answer:
because the sodium channels have a refractory period following activation, during which they cannot open again and it ensures that the action potential is propagated in a specific direction along the axon.
Answer:
Hepatic portal vein , is responsible for the transport of blood from the intestine to the liver.
Explanation:
The Hepatic portal vein also called the portal vein ,
The blood vessel carries blood from the gastrointestinal tract , pancreas , gallbladder and spleen to the liver .
The blood in the blood vessel contains toxins and nutrients absorbed from the digested contents.
Around one third of the total blood of liver flows via Hepatic Portal Vein.
Hence,
Blood is transported from the intestine to the liver in a large vessel known as the <u> Hepatic Portal Vein.</u>
