Neurosci Drugs and Behavior Exam 1
1. Nervous tissue is comprised of what 2 kinds of cells?: Neuronal and Glial cells
2. Neuronal cells: Excitable (generate action potential), communicate with each other, cant
be replaced but can grow and shrink
3. Glial cells: Non-excitable, support nurture and protect neurons, constantly re- place
themselves
4. What 2 kinds of microscopy are used to visualize neurons?: Light and Elec- tron microscopy
5. Light Microscopy: Resolution 0.2 um. Visualize neurons and some large neu- ronal
organelles
6. Electron Microscopy: Resolution 1nm. Visualize neuronal organelles
7. What are the 3 basic subdivisions of neurons?: Cell body/soma, dendrites, axon
8. Cell Body/Soma function: Core region; contains nucleus, integrates info
9. Dendrites: Gathers info from other neurons. Each neuron usually has many dendrites
10.Structures on dendrites: Dendritic spines: Protrusion from dendrite that in- creases surface
area and is usual point of contact with axons of other cells
11.Axon: Carries info to be passed on to other cells. 1 branches to reach and contact many
other neurons. Bundles of these are called tracts (CNS) or nerves (PNS)
12.Structures on axon: Axon Hillock: Juncture of soma and axon where the action potential
is generated
13.Structures on axon: Axon boutons/terminals: Knobs on an axon that conveys info to other
neurons
14.Structures on axon: Myelin sheaths, nodes of Ranvier: None
15.What is a Synapse?: "link/join together" Connection between 2 neurons. Usu- ally between
axon terminals of 1 neuron and a dendritic spine of another neuron
16.How does information flow in a neuron?: Dendrite -> cell body -> axon -> axon terminal
17.What are the 2 different types of neurons?: Excitatory and Inhibitory Neurons
18.Excitatory Neurons: Form excitatory synapses on other neurons produce ex- citatory
responses
19.Inhibitory Neurons: Form inhibitory synapses on other neurons and produce inhibitory
responses
20.Function of Glial cells: "glue" support, nurture, and protect neurons
21.What are the 5 types of glial cells?: Ependymal, astrocyte, microglial, oligo- dendroglial,
Schwann
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4
1. Nervous tissue is comprised of what 2 kinds of cells?: Neuronal and Glial cells
2. Neuronal cells: Excitable (generate action potential), communicate with each other, cant
be replaced but can grow and shrink
3. Glial cells: Non-excitable, support nurture and protect neurons, constantly re- place
themselves
4. What 2 kinds of microscopy are used to visualize neurons?: Light and Elec- tron microscopy
5. Light Microscopy: Resolution 0.2 um. Visualize neurons and some large neu- ronal
organelles
6. Electron Microscopy: Resolution 1nm. Visualize neuronal organelles
7. What are the 3 basic subdivisions of neurons?: Cell body/soma, dendrites, axon
8. Cell Body/Soma function: Core region; contains nucleus, integrates info
9. Dendrites: Gathers info from other neurons. Each neuron usually has many dendrites
10.Structures on dendrites: Dendritic spines: Protrusion from dendrite that in- creases surface
area and is usual point of contact with axons of other cells
11.Axon: Carries info to be passed on to other cells. 1 branches to reach and contact many
other neurons. Bundles of these are called tracts (CNS) or nerves (PNS)
12.Structures on axon: Axon Hillock: Juncture of soma and axon where the action potential
is generated
13.Structures on axon: Axon boutons/terminals: Knobs on an axon that conveys info to other
neurons
14.Structures on axon: Myelin sheaths, nodes of Ranvier: None
15.What is a Synapse?: "link/join together" Connection between 2 neurons. Usu- ally between
axon terminals of 1 neuron and a dendritic spine of another neuron
16.How does information flow in a neuron?: Dendrite -> cell body -> axon -> axon terminal
17.What are the 2 different types of neurons?: Excitatory and Inhibitory Neurons
18.Excitatory Neurons: Form excitatory synapses on other neurons produce ex- citatory
responses
19.Inhibitory Neurons: Form inhibitory synapses on other neurons and produce inhibitory
responses
20.Function of Glial cells: "glue" support, nurture, and protect neurons
21.What are the 5 types of glial cells?: Ependymal, astrocyte, microglial, oligo- dendroglial,
Schwann
1/
4
