The Nervous System

The _____ cannot be controlled by conscious thought.

What kind of nerve cells are thought to be helpers for the neurons?

When a neuron is depolarized, what are the first channels to open?

When a neuron is resting, the inside of the axon has a ____________ charge.

Animal nervous systems have how many basic types of synapses?

There are four major groups of neurotransmitters that do the majority of work in the body.

The cerebral cortex contains how many nerve cells?

Which division of vertebrate brains receives and processes visual information?

The PNS is composed of ____ and ganglia.

When motor axons leave the spinal cord through the ventral surface it makes up the ______.