NEET PG DENTAL EXAM

Detailed explanation-1: -Thus, the correct sequence is a sensory receptor, sensory neuron, interneuron, motor neuron and effector.

Detailed explanation-2: -An effector organ is one that acts in response to the stimulus. In the case of the reflex arc, the effector organ is almost always a muscle fibre or a group of muscle fibres. It is innervated by a motor neuron carrying information about the response. In most cases, three neurons are involved in a reflex arc.

Detailed explanation-3: -The primary components of the reflex arc are the sensory neurons (or receptors) that receive stimulation and in turn connect to other nerve cells that activate muscle cells (or effectors), which perform the reflex action.

Detailed explanation-4: -A receptor – muscle spindle. An afferent fibre – muscle spindle afferent. An integration centre – lamina IX of spinal cord. An efferent fibre – -motoneurones. An effector – muscle.