CBNS 120 MT 2 Review

1. Which of the following associations are INCORRECT?

• oligodendrocytes - white matter
• astrocytes - tripartite synapse
• Schwann cells - neuronal injury
• microglia - neuronal progenitor

2. Retrograde synaptic transmission is associated with:

• anadamide
• PLC
• Go
• Gs

3. Acetylcholine treatment on sympathetic ganglion neurons leads to:

• activation of HCN channels
• activation of muscarinic Acetylcholine receptors
• inhibition of M channels
• activation of nicotinic acetylcholine receptors

4. Neurally evoked neurotransmitter release at the neuromuscular junction:

• requires Ca2+
• is blocked by alpha-bungarotoxin
• is called a MEPP
• occurs via quanta release

5. cAMP is:

• activates HCN
• created by PLC
• activates PKA
• activates PKC

6. Ca2+ entry into the presynaptic nerve terminal is:

• voltage-dependent
• increases the probability of exocytosis
• increased by Go signaling
• required for MEPPs

7. Ca2+ released from intracellular stores

• occurs due to Gq signaling
• leads to release of NO in vascular endothelial cells
• is mediated by IP3
• is mediated by nicotinic Acetylcholine receptor activation

8. If [Ca2+]o is reduced at the neuromuscular junction:

• probability of neurotransmitter release increases
• EPP amplitude decreases
• MEPP amplitude increases
• quantum size decreases

9. When Em = -80 mV, glutamate-activated current in CNS is:

• blocked by APV
• blocked by CNQX
• blocked by Mg2+
• blocked by Cd2+

10. Radial glia:

• myelinate hippocampal axons
• act as tracts for neuronal migration during development
• can conduct action potentials
• are neuronal progenitors