Reflex action below the neck are under the control of:
Correct answer: B. Spinal cord
- A. Brain
- B. Spinal cord
- C. Hypothalamus
- D. Pituitary
Explanation
The spinal cord serves as the primary center for coordinating reflex actions. Sensory neurons receive stimuli from the periphery and transmit signals directly to motor neurons within the spinal cord, bypassing the brain. This allows for rapid responses to potentially harmful stimuli, such as withdrawing from a painful stimulus or adjusting posture to maintain balance.
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About Reflexes and the Reflex Arc
A reflex arc shows how a rapid, automatic response travels from a receptor through a sensory neuron, relay neuron and motor neuron to an effector. The topic covers synapses, the spinal cord's role, and the difference between an involuntary reflex action and a slower voluntary response.
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