5 Written questions
5 Multiple choice questions
- are nerve cells that run through our entire bodies and communicate with each other; each of us has 100 billion of these, most of which are in the brain
- neurons send messages across synapses through the release of this; these are the chemicals that are stored in sacs in the axon terminals
- at the end of the axon, these small fibers branch out
- is a junction between the axon terminals of one neuron and the dendrites of another; messages only travel in one direction
- transmits messages away from the cell body; a neuron usually has only one axon; they vary greatly in length.
4 True/False questions
dendrites → thin fibers branching out from the cell body; they receive info from other neurons and pass the message through the cell body; carries info to the cell body
nervous system → consists of the brain and the spinal cord
myelin → transmits messages away from the cell body; a neuron usually has only one axon; they vary greatly in length.
autonomic nervous system → regulates the body's vital functions, such as heartbeat, breathing, digestion, and blood pressure; we generally do not think of these activities