Question

neuron review
nerve cells, called (7)
run through our entire bodies and communicate with each other.
receives information from other neurons and pass the message
through the cell body.
(8)
a. components of a neuron
carries messages away.
(9)

• what purpose does the cell body play?(10)
• what purpose does the fatty myelin play?(11)

b. communication process
in order for a message to be sent from one neuron to another neuron, it must cross the
this is a junction between the axon terminals of one neuron and the
(12)
dendrites of another neuron. (its a small gap, less than a millionth of an inch wide.

Explanation:

(7) Nerve cells are called neurons. Neurons have parts that receive and send messages. Dendrites receive information from other neurons and pass the message through the cell body. The axon carries messages away.
(8) Dendrites receive information from other neurons and pass the message through the cell body.
(9) The axon carries messages away from the cell body.
(10) The cell body integrates incoming signals from dendrites and initiates an electrical - signal (action potential) if the sum of the signals reaches a certain threshold. It also contains the nucleus and other organelles that maintain the neuron's metabolic functions.
(11) The fatty myelin sheath insulates the axon, which speeds up the transmission of electrical signals (action potentials) along the axon by allowing for saltatory conduction.
(12) The junction between the axon terminals of one neuron and the dendrites of another neuron is called a synapse. It is a small gap (less than a millionth of an inch wide) through which neurotransmitters are released to transmit the message from one neuron to another.

Answer:

(7) Neurons
(8) Dendrites
(9) Axon
(10) Integrates signals and maintains metabolic functions
(11) Speeds up electrical - signal transmission
(12) Synapse