Module 9 Samenvatting
1). Neuron
Ans: a nerve cell; the basic building block of the nervous system.
2). Cell body
Ans: the part of a neuron that contains the nucleus; the cell's life-support center.
3). Dendrites
Ans: a neuron's often bushy, branching extensions that receive and integrate messages,
conducting impulses toward the cell body.
4). Axon
Ans: the neuron extension that passes messages through its branches to other
neurons or to muscles or glands.
5). Myelin [my-uh-lin] sheath
Ans: a fatty tissue layer segmentally encasing the axons of some neurons; enables
vastly greater transmission speed as neural impulses hop from one node to the next.
6). Glial cells (glia)
Ans: cells in the nervous system that support, nourish, and protect neurons; they also
play a role in learning, thinking, and memory.
7). Action potential
Ans: a neural impulse; a brief electrical charge that travels down an axon.
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1). Neuron
Ans: a nerve cell; the basic building block of the nervous system.
2). Cell body
Ans: the part of a neuron that contains the nucleus; the cell's life-support center.
3). Dendrites
Ans: a neuron's often bushy, branching extensions that receive and integrate messages,
conducting impulses toward the cell body.
4). Axon
Ans: the neuron extension that passes messages through its branches to other
neurons or to muscles or glands.
5). Myelin [my-uh-lin] sheath
Ans: a fatty tissue layer segmentally encasing the axons of some neurons; enables
vastly greater transmission speed as neural impulses hop from one node to the next.
6). Glial cells (glia)
Ans: cells in the nervous system that support, nourish, and protect neurons; they also
play a role in learning, thinking, and memory.
7). Action potential
Ans: a neural impulse; a brief electrical charge that travels down an axon.
PaperStoc.com Page 1 of 3
