c11-c14 Practice Quiz
On this quiz, score 80% or higher, and receive a +5 bonus on the test.
Your LAST Name:
1. Saltatory conduction is made possible by ________.
erratic transmission of nerve impulses
the myelin sheath
large nerve fibers
2. Nerve impulses leading to the brain carry information about cool temperatures on the skin. The nerve fibers sending these signals will most likely belong to which division of the nervous system?
sensory (afferent) division
somatic nervous system
3. Which ion channel opens in response to a change in membrane potential and participates in the generation and conduction of action potentials?
mechanically gated channel
voltage -gated channel
4. Immediately after an action potential has peaked, which of the following channels will open?
voltage gated potassium channels
voltage gated sodium channels
chemically gated chloride channels
voltage gated calcium channels
5. During the relative refractory period of an action potential, a larger than normal stimulus is needed to cause another action potential. This is due to the fact that ________.
the voltage gated potassium ion channels remain open long enough to hyperpolarize the axon membrane
the membrane is now impermeable to all ions
the inactivation gates on voltage gated sodium ion channels are closed
the sodium potassium pump will stop working during relative refractory
6. The subarachnoid space lies between what two layers of meninges?
arachnoid and pia
arachnoid and dura
arachnoid and epidura
dura and epidura
7. Cell bodies of sensory neurons are located in ________.
the ventral root ganglia of the spinal cord
the dorsal root ganglia of the spinal cord
8. The primary auditory cortex is located in the ________.
9. Tactile sensation is a combination of touch, pressure, stretch and vibration. Which of the following is most likely the receptor type that senses tactile stimulation?
10. Collections of nerve cell bodies outside the central nervous system are called ________.
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