15 Questions
In which lamina of the dorsal horn do nociceptive axons synapse with second-order neurons?
Lamina I, II, and V
What neurotransmitter is released by moderate pain axons in the dorsal horn?
Glutamate
What is the characteristic of the action of neurotransmitters released by stronger pain axons?
Slow and sustained
What is the role of ATP in pain transmission in the dorsal horn?
Facilitating pain transmission
What is the primary function of nociceptive axons in the dorsal horn?
Transmitting pain signals
What is the primary neurotransmitter released by both moderate and stronger pain axons?
Glutamate
What is the characteristic of the action of neurotransmitters released by moderate pain axons?
Fast and brief
Which of the following lamina in the dorsal horn does not receive synapses from nociceptive axons?
Lamina III
What is the distinguishing feature of stronger pain axons compared to moderate pain axons?
Release of glutamate and substance P
What is the function of substance P in pain transmission?
Enhancing the strength of pain signals
What is the primary difference in neurotransmitter release between moderate and stronger pain axons?
Release of substance P
In which lamina of the spinal cord do axons release glutamate and substance P?
Lamina I, II, and V
What is the relationship between the type of pain and the speed of neurotransmitter action?
Moderate pain axons have faster action
What is the common neurotransmitter released by both moderate and stronger pain axons?
Glutamate
Which of the following is a characteristic of stronger pain axons?
Slower, sustained actions
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
This quiz covers the transmission of pain signals in the spinal cord, including the role of nociceptive axons, glutamate, and substance P.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
