Physiology Lab Fall 2006 Stark Quiz 1

1. Ca+2 channels at the axon terminal open via which signal?

Action Potential/Depolarization

2. Which ion is most responsible for the resting potential of neurons?

K+

3. This phenomena ensures the unidirectionality of action potentials.

Refractory period

4. Giant squid axons are larger due to the lack of _____________?

Myelin

5. Will an IPSP usually fire an action potential?

No

6. All adrenergic receptors use which type of signaling pathway?

G-protein Coupled

7. On a standard Cartesian coordinate graph, which axis is the independent variable?

X axis

8. In making fine tipped microelectrodes, a very small capillary tube in heated and pulled apart. What inside of the pulling apparatus is doing the pulling?

Magnets

9. If fast noise is interfering with recordings on the physiograph, which type of filter would you
use?

High cut off (low pass) filter

10. Both the sympathetic and parasympathetic system use which receptor and neurotransmitter
at the first synapse?

Nicotinic receptor and Acetylcholine

This page was last updated 9/15/06

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