Neural Control and Coordination Question 42
42. In vertebrates, simple reflex action is [1999]
(a) polysynaptic
(b) bisynaptic
(c) trisynaptic
(d) monosynaptic
Show Answer
Answer : d
Hints & Solutions
(d) A reflex action is a nerve mediated spontaneous, automatic and involuntary response to a stimulus acting through specific receptors without consulting the will of the animal. When a reflex arc consists of only two neurons in an animal (one sensory neuron, and one motor neuron), is defined as monosynaptic.
