Question

question 14
which of the following is the correct reflex are pathway from the spinal cord?
a efferent neurons, ventral root, effectors
b receptors, afferent neurons, dorsal root
c effectors, ventral root, efferent neurons
d efferent neurons, dorsal root, effectors

Explanation:

• Efferent neurons: Also known as motor neurons, they carry signals away from the central nervous system (in this case, the spinal cord).
• Ventral root: It is part of the spinal nerve that contains efferent neurons. Signals travel through the ventral root to reach the effectors.
• Effectors: These are muscles or glands that respond to the signals from the efferent neurons.

• Option B is incorrect because it shows the pathway to the spinal cord (receptors detect stimuli, afferent neurons carry signals to the spinal cord via the dorsal root).
• Option C has the wrong order (signals should go from neurons to effectors, not the other way around for this part of the reflex arc from the spinal cord).
• Option D is incorrect because the dorsal root is associated with afferent (sensory) neurons (carrying signals to the spinal cord), not efferent neurons (carrying signals from the spinal cord).

Answer:

A. efferent neurons, ventral root, effectors