Reflexes such as blinking and pupilary reflex is

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Unformatted text preview: side. C. A withdrawal reflex on one side of the body and extension on the other side. Value 0% 0% 100% D. A withdrawal reflex on one side of the body and a flexor reflex on the other side. 0% Score: 1/1 7. The relative refractory period occurs during: Student Response + Value A. opening of Na gates B. opening of K+ gates + + C. closing of K gates when excess K has left the neuron. 0% 0% 100% D. opening of K+ gates when excess K+ has left the neuron. 0% Score: 1/1 8. If one input to a reflex releases a depolarizing neurotransmitter with a high frequency it could result in _____ at the receptive region of the receiving neuron. Student Response A. B. C. D. temporal summation spatial summation action potential All of the above. E. #1 and #3 only. Score: Value 100% 0% 0% 0% 0% 0/1 9. If several inputs to a reflex pathway each produce simultaneous sub-threshold depolarizations, it could result in _____ at the receptive region of the receiving neuron. Student Response A. B. C. D. temporal summation spatial summation action potential All of the above. E. #1 and #3 only. Score: Value 0% 100% 0% 0% 0% 0/1 10. A small local depolarization or hyperpolarization is known as: Student Response A. B. C. D. EPSP IPSP graded potential all of the above E. #1 and #2 only. Score: 0% 0/1 itle: Started: Submitted: Time spent: Quiz #8 Neurophysiology November 25, 2007 2:18 PM November 25, 2007 2:40 PM 00:22:10 Total score: 7/10 = 70% Total score adjusted by 0.0 1. High frequency stimuli result from: Value 0% 0% 0% 100% Maximum possible score: 10 Student Response A. A stimulus which is broadly spread on the body's soma. B. A stimulus of high intensity on the body's soma. C. Many neurons functioning at the same time. D. Both #1 and #3. Score: Value 0% 100% 0% 0% 0/1 2. Prior sub-threshold depolarization of a reflex pathway produces: Student Response A. facilitation B. inhibition C. divergence D. convergence Score: Value 100% 0% 0% 0% 0/1 3. The relative refractory period occurs during: Student Response A. opening of Na+ gates B. opening of K+ gates + + C. closing of K gates when excess K has left the neuron. Value 0% 0% 100% D. opening of K+ gates when excess K+ has left the neuron. 0% Score: 1/1 4. A small local depolarization or hyperpolarization is known as: A. EPSP B. IPSP C. graded potential D. all of the above Student Response Value 0% 0% 0% 100% E. #1 and #2 only. 0% Score: 1/1 5. When an action potential spreads from one node of Ranvier to the next it is called _______ and it travels _________ than other forms of transmission. Student Response A. saltatory conduction, faster B. saltatory conduction, slower C. synaptic transmission, faster D. synaptic transmission, slower Value 100% 0% 0% 0% Score: 1/1 6. Threshold depolarization will result in an action potential when it occurs at: Student Response A. chemically-gated ion channels only B. voltage-gated ion channels only C. Both chemically-gated and voltage-gated ion channels. D. The receptive region. Score: Value 0%...
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