Which of these does not participate in reflex actions?
Correct answer: C. Pituitary
- A. Motor neuron
- B. Effector
- C. Pituitary
- D. Spinal cord
Explanation
The pituitary gland does not directly participate in reflex actions. Reflex actions are rapid, involuntary responses to stimuli that involve the spinal cord and in some cases the brainstem, but not the higher brain centers or the endocrine system, which includes the pituitary gland. The pituitary gland's primary role is the secretion of hormones that regulate various bodily functions, which is a much slower process than the neural mechanisms involved in reflexes.
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About Coordination and Control
Coordination depends on receptors, neurons, synapses and nerve impulses, with reflex actions traced through the reflex arc and the roles of major brain regions. Chemical coordination covers endocrine glands and hormones, including how hormones regulate growth, metabolism, reproduction and internal balance, unlike rapid nervous control.
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