Podcast
Questions and Answers
In which lamina of the dorsal horn do nociceptive axons synapse with second-order neurons?
In which lamina of the dorsal horn do nociceptive axons synapse with second-order neurons?
- Lamina VI and VII
- Lamina III and IV
- Lamina I, II, and V (correct)
- Lamina VIII and IX
What neurotransmitter is released by moderate pain axons in the dorsal horn?
What neurotransmitter is released by moderate pain axons in the dorsal horn?
- Glutamate (correct)
- Dopamine
- ATP
- Substance P
What is the characteristic of the action of neurotransmitters released by stronger pain axons?
What is the characteristic of the action of neurotransmitters released by stronger pain axons?
- Fast and brief
- Slow and brief
- Fast and sustained
- Slow and sustained (correct)
What is the role of ATP in pain transmission in the dorsal horn?
What is the role of ATP in pain transmission in the dorsal horn?
What is the primary function of nociceptive axons in the dorsal horn?
What is the primary function of nociceptive axons in the dorsal horn?
What is the primary neurotransmitter released by both moderate and stronger pain axons?
What is the primary neurotransmitter released by both moderate and stronger pain axons?
What is the characteristic of the action of neurotransmitters released by moderate pain axons?
What is the characteristic of the action of neurotransmitters released by moderate pain axons?
Which of the following lamina in the dorsal horn does not receive synapses from nociceptive axons?
Which of the following lamina in the dorsal horn does not receive synapses from nociceptive axons?
What is the distinguishing feature of stronger pain axons compared to moderate pain axons?
What is the distinguishing feature of stronger pain axons compared to moderate pain axons?
What is the function of substance P in pain transmission?
What is the function of substance P in pain transmission?
What is the primary difference in neurotransmitter release between moderate and stronger pain axons?
What is the primary difference in neurotransmitter release between moderate and stronger pain axons?
In which lamina of the spinal cord do axons release glutamate and substance P?
In which lamina of the spinal cord do axons release glutamate and substance P?
What is the relationship between the type of pain and the speed of neurotransmitter action?
What is the relationship between the type of pain and the speed of neurotransmitter action?
What is the common neurotransmitter released by both moderate and stronger pain axons?
What is the common neurotransmitter released by both moderate and stronger pain axons?
Which of the following is a characteristic of stronger pain axons?
Which of the following is a characteristic of stronger pain axons?
Study Notes
Pain Transmission in the Spinal Cord
- Nociceptive axons synapse with second-order neurons in lamina I, II, and V of the dorsal horn in the spinal cord
- Transmission of moderate pain involves the release of glutamate by axons
- Transmission of stronger pain involves the release of both glutamate and substance P (and ATP) by axons
- The action of glutamate is fast
- The action of substance P (and ATP) is slower and more sustained
Pain Transmission in the Spinal Cord
- Nociceptive axons synapse with second-order neurons in lamina I, II, and V of the dorsal horn in the spinal cord
- Transmission of moderate pain involves the release of glutamate by axons
- Transmission of stronger pain involves the release of both glutamate and substance P (and ATP) by axons
- The action of glutamate is fast
- The action of substance P (and ATP) is slower and more sustained
Pain Transmission in the Spinal Cord
- Nociceptive axons synapse with second-order neurons in lamina I, II, and V of the dorsal horn in the spinal cord
- Transmission of moderate pain involves the release of glutamate by axons
- Transmission of stronger pain involves the release of both glutamate and substance P (and ATP) by axons
- The action of glutamate is fast
- The action of substance P (and ATP) is slower and more sustained
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Description
This quiz covers the transmission of pain signals in the spinal cord, including the role of nociceptive axons, glutamate, and substance P.
