A) conditional reflex
B) simple reflex
C) neurotransmitter function
D) auconomic nerve conditions
Correct Answer: D
Solution :
Reflexes are fast predictable automatic responses to change the environment. First of all Marshal Hall (1833) studied the reflex action. Best and Taylor defined reflex action as ?simplest form of irritability associated with the nervous system is reflex actions or a reflex reaction is an immediate involuntary response to a stimulus.? If frogs brain is crushed even then its leg moves on the pinpointing. This is a simple reflex. Here, reflex action occurs without the involvement of brain. Simple reflex (unconditioned reflex) is controlled by spinal cord only, it does not involved brain, eg, sneezing, closing of the eye when strong light falls on it, knee jerk, coughing, yawning etc.
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