The correct sequence of transmission of pain/nociceptive stimulus from distal to proximal is : A. Lateral spinothalamic tract B. Transmission cells or T cells/Interneurons C. Third order neuron D. Dorsal root E. Cerebral cortex Choose the correct answer from the options given below :
Understanding Pain Stimulus Transmission
The question asks to identify the correct sequence for the transmission of a pain or nociceptive stimulus, moving from the periphery (distal) towards the central nervous system and brain (proximal).
Tracing the Nociceptive Pathway
The pathway involves several key structures and neuronal components:
- Dorsal root (D): This is where sensory nerve fibers, carrying the initial stimulus from the periphery, enter the spinal cord.
- Transmission cells or T cells/Interneurons (B): Within the dorsal horn of the spinal cord, the primary sensory neuron synapses with secondary neurons. These are often transmission cells or interneurons that process and relay the signal.
- Lateral spinothalamic tract (A): The secondary neurons typically cross to the opposite side of the spinal cord and ascend towards the brain via the lateral spinothalamic tract, a major pathway for pain and temperature.
- Third order neuron (C): Neurons originating in the thalamus (a relay station in the brain) form the third-order neurons. These project from the thalamus to the cerebral cortex.
- Cerebral cortex (E): This is the final destination where the pain stimulus is consciously perceived and interpreted.
Sequencing the Neural Transmission
Following the path from distal to proximal:
- The stimulus enters the spinal cord via the Dorsal root (D).
- It synapses with Transmission cells/Interneurons (B) in the spinal cord.
- The signal ascends via the Lateral spinothalamic tract (A).
- From the thalamus, the Third order neuron (C) carries the signal further.
- The signal reaches the Cerebral cortex (E) for perception.
Therefore, the correct sequence is D, B, A, C, E.
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Important Questions from Mixed Topic (CUET PG)
- Who was the founder of Bolshevik Communist party?
- What is the key guide to statecraft in the realist tradition?
- Chronologically arrange the events in the Cold War period.
A. Berlin Wall is constructed
B. Communist China joins the UN
C. Soviet invasion of Czechoslovakia
D. Berlin Blockade
Choose the correct answer from the options given below: Morgenthau's principles of political realism are:
A. Politics is rooted in permanent and unchanging human nature which is basically self centred, self-regarding and self-interested
B. Politics is an autonomous sphere of action and cannot therefore be reduced to morals
C. International Politics is an arena of conflicting self-interests
D. The ethics of international relations is situational ethics which is very different from private morality
Choose the correct answer from the options given below:Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?
