Answer: Cell bodies of primary sensory (afferent) neurons that transmit pain, temperature, and touch to the spinal cord.
- A Cell bodies of motor neurons that directly control the contraction of skeletal muscle fibres themselves as widely reported
- B Cell bodies of primary sensory (afferent) neurons that transmit pain, temperature, and touch to the spinal cord
- C Cell bodies of autonomic neurons that regulate involuntary visceral organ function broadly in standard practice
- D Mainly the cell bodies of interneurons confined largely within the grey matter of the spinal cord under most conditions encountered
Correct answer: B. Cell bodies of primary sensory (afferent) neurons that transmit pain, temperature, and touch to the spinal cord
Explanation: DRG (dorsal root ganglion): contains cell bodies of primary sensory neurons (pseudounipolar). They receive signals from skin, muscles, organs and transmit to dorsal horn of spinal cord.
Structure of a neuron. Image: LadyofHats (Mariana Ruiz), Public Domain, via Wikimedia Commons.
Concept context
Brain, spinal cord, neurons, reflex arcs, and sense organs.