Question
Science Question on human nervous system
The correct sequence of events when someone’s hand touches a hot object (reflex action):
A
Sensory neuron → Motor neuron → Relay neuron → Effector muscle
B
Relay neuron → Sensory neuron → Motor neuron → Effector muscle
C
Sensory neuron → Relay neuron → Motor neuron → Effector muscle in arm
D
Motor neuron → Sensory neuron → Relay neuron → Effector muscle
Answer
Sensory neuron → Relay neuron → Motor neuron → Effector muscle in arm
Explanation
Solution
The sequence is: Receptors detect the stimulus → Sensory neuron → Relay neuron → Motor neuron → Effector muscle, which moves the hand.