HUMAN NUTRITION

Detailed explanation-1: -Neurons. Neurons, or nerve cells, carry out the functions of the nervous system by conducting nerve impulses. They are highly specialized and amitotic.

Detailed explanation-2: -A sensory neuron transmits impulses from a receptor, such as those in the eye or ear, to a more central location in the nervous system, such as the spinal cord or brain.

Detailed explanation-3: -Microglia, which permanently reside in the central nervous system, are a type of phagocytic cell that can engulf bacteria and other pathogens that have infected the brain. They also play an important role in the developing brain, pruning away neuronal synapses that have failed to become fully active.

Detailed explanation-4: -Messages, in the form of electrical impulses, constantly travel back and forth between the brain and other parts of the body. A special cell called a neuron is responsible for carrying these messages. There are about 100 billion neurons in the human brain.