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:
The correct answer is 3rd statement.
Explanation:
A kind of sweat gland that discharges water from the surface of the body at the time of high internal temperatures are known as exocrine sweat glands. This water gets evaporates and results in the cooling of the skin surface. When the temperature of the body enhances, the sweat glands along with water also discharges electrolytes from the surface of the body.
The sweat glands also exhibit antibacterial properties, as they discharge dermcidin that interferes with the sticking of the microbes with the skin surface. The exocrine sweat glands do not secrete lipids, thus, they lack the tendency to condition the skin surrounding it. Hence, the given statement 3 is incorrect.
The correct answer is age of the rock layers
Answer:
one is a fish and the other is a bug
Explanation:
The answer is; B
Increasing human population put enormous pressure on natural resources of the planet. This is because increasing human population is directly proportional to increasing energy demands and food. Therefore meeting these needs become more and more difficult and requires innovations. Space also becomes inadequate.
