Nervous System

Nervous System

A. Adult neurons can sometimes from new connections
B. If one input to a target area is lost, the remaining inputs sometimes send out new branches from their axons to colonize the vacant space
C. Although transplanted neurons taken from a brain at the right stage of development will grow in an adult host brain, they will not restore normal function
D. Transplants of dopamine cell bodies alleviate some of the symptoms of Alzheimer’s disease in human patients

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A. Neurons are integrators; they can have a vast number of different inputs, but they produce just a single output signal, which they transmit to their targets
B. There is a small voltage difference between the inside and the outside of the neuron in it resting state, known as the action potential
C. The inputs to neurons are tiny amounts of chemical neurotransmitters
D. In the steady state neurons, there is an active pumping of ions across the neuronal membrane

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