The transmission of an impulse is made possible first by electric signals propagating within a neuron. Then, at the end of the axon called a synapse, chemical substances called neurotransmitters get released to transmit the message. These neurotransmitters then attach to chemical receptors in the following neuron.
Answer:
Igneous rocks and Metamorphic rocks determine the age of the earth.
Parasitism - the leech benefits off the alligator, while the alligator is harmed
Answer:
It would most likely show that at some point Australia in that area had lots of dense forestry in that region as the abundance of forestry would be needed to be turned into coal.
Explanation: During the carboniferous the planet was covered in a large abundance of forestry that would often go into that ground and be compressed by other plant life and occasional flooding of seas and would eventually be turned into coal over millions of years.
After the depolarization wave front passes through the atria, it enters that AV node which is located at the apex of the triangle of Koch. It would be the AV node that <span>collects the depolarization wave from the atria to pass it onto the ventricles. Hope this answers the question.</span>
