An action potential is an excitatory presynaptic nerve. An EPSP (Excitatory postsynaptic potential) takes place in the dendrites of the postsynaptic nerve. This spreads passively to the axon hillock. Depolarization of this region opens voltage-gated ionic channels. Sufficient membrane depolarization to threshold opens enough to these channels to produce an action potential.
Non myelinated axon; the currents associated with the action potential spread to the depolarized region of the axon.
In myelinated axon; the currents associated with the action potential spread to the next Node of Ranvier.
The action potential travels down the axon to the axon terminals.
Answer:
16: D edit it ment to be d
17: B
Explanation:
For 16 if you look at the chart you can calculate by seeing what letters intersect which was D.
For 17 it's common sense if you do research.
Answer:
Xerophyte
Explanation:
The plant will have adventitious roots and long tap root to search for water. It will also have thick bark. Or succulent stem or leaves for storing water.
It will be the water & controlling species through their development.
