Answer:
The answer to the question: Electrical impulses or action potentials (AP) cannot propagate across a synaptic cleft. Instead, neurotransmitters are used to communicate at the synapse, and re-restablish the AP in the post-synaptic cell, would be, true.
Explanation:
Essentially, although the CNS, PNS and ANS (Central Nervous System, Peripheral Nervous System and Autonomic Nervous System) are electrical systems, that use the electricity generated through action potentials, that in turn, are created by the exchange of electrically charged ions from within and without the neuronal cells, these electrical impulses do not pass the pre-synaptic, and post-synaptic cleft. Instead, once an AP has reached the terminal end of the pre-synaptic neuron, neurotransmitters are released by this one, into the cleft, which are then taken up by the receptors present in the post-synaptic neuron. Depending on the type of transmitter released, there will be an inhibitory or excitatory effect. Then, with the transmitter attached, the post-synaptic neuron will depolarize and a new AP will be generated in the post-synaptic neuron, which will carry on. Messages, thus are transmitted that way between neurons, and also, between the nervous system and the organs they influence.
In developed countries, most individuals die at <u>hospitals</u>, whereas in developing countries most individuals die at <u>home</u>.
In excessive earnings nations the bulk of humans die of simply vast organizations of reasons: cardiovascular sickness and cancer. As cardiovascular sicknesses declined, extra humans died from cancer. The proportion of deaths from maximum different vast reasons of dying increased, too. This has brought about more range in reasons of dying. Generally, wealthier international locations have a better common existence expectancy than poorer international locations, which may be argued to be done via better requirements of living, extra powerful fitness systems, and extra assets invested in determinants of fitness (e.g. sanitation, housing, education).
Thus, option a is the correct choice.
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Answer:
The answer to the question: In what part of the spinal cord would you expect to find myelinated axons, would be, in the white matter of the spinal cord.
Explanation:
The spinal cord, the roadway and connection between the brain and the rest of the body, and a vital part of life itself, is formed by covering tissue, fluid, and most importantly, by the neuronal bodies and axons that form the entire system of the CNS, and ANS, and which also connect these systems with the PNS (peripheral nervous system), and the different organs. One visual characteristic of the cord is it having two colors, white and gray. The white matter surrounds the gray matter. The reason for this white color in the white matter, which is really the connecting filaments that go up and down the CNS, and connect with the gray matter, is that white matter neurons and axons are covered by myelin, an insulating and cushioning covering that surrounds the cell´s axons and also helps the nerve impulses move much faster and with higher precision, than in the white matter.
