Receptors, effectors, gray matter and motor fibres
Receptors, sensory fibres, gray matter, motor fibres and effectors
Sensory fibres, gray matter, motor fibres, receptors and effectors
Effectors, gray matter, motor fibres, sensory fibres and receptors
A
Receptors, effectors, gray matter and motor fibres
B
Sensory fibres, gray matter, motor fibres, receptors and effectors
C
Receptors, sensory fibres, gray matter, motor fibres and effectors
D
Effectors, gray matter, motor fibres, sensory fibres and receptors
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Solution
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When a sensory receptor is stimulated, signals pass from it through a sensory neuron to the spinal cord. The message travels out of the spinal cord along a motor neuron to the effector organ (e.g., a muscle or a gland), which acts accordingly. Such a pathway is called a reflex arc. A reflex arc is the nerve pathway which makes such a fast, automatic response possible.
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Similar Questions
Q1
One of the following gives the correct sequence of the components in a reflex arc. This is :
(a) Receptors → Muscle → Sensory neuron → Motor neuron → Spinal cord
(b) Receptors → Motor neuron → Spinal cord → Sensory neuron → Muscle
(c) Receptors → Spinal cord → Sensory neuron → Motor neuron → Muscle
(d) Receptors → Sensory neuron → Spinal cord → Motor neuron → Muscle
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Q2
Question 5
Which is the correct sequence of the components of a reflex arc?