Answer:
Option (C).
Explanation:
Gap junction may be defined as the junctions that allow the communication between the neighboring cells. Gap junctions are leaky and allows the passage of the molecules easily.
Gap junctions constitute of connexons. Gap junctions can easily allow the flow of ions and small molecules from one cell to another cell. Gap junctions are known for the electrical coupling of cells as ions can easily pass through the gap junctions.
Thus, the correct answer is option (C).
Answer:
Microglial cell
Explanation:
The microglial cells are macrophages that are in the central nervous system (brain and spinal cord) protecting it. This cells will phagocytize damaged neurons as when a person has Alzheimer as well as agents that can cause a potential damage to the central nervous system such as the meningitis virus. When the Microglial cells phagocytize they absorb the damaged neuron or antigen and then they destroy it.
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<u>Answer</u>: d. it will release chemical messengers.
The action potential, which is an electric pulse, will travel down the axon untill it reaches the synapses. At the synapses, neurotransmitters (chemical messengers) will be released by the neuron.