Question

The stimulus from the environment is received by the

• A. association nerve
• B. spinal cord
• C. receptors
• D. effectors

Answer 1

The correct option is C

receptors

The correct answer is option C.

Explanation of correct option:

1. There is a close coordination between the central nervous system and the sense organs.
2. Stimuli such as heat, sound and light are detected by different receptors.
3. Receptors are special cells present in the sense organs that receive a stimulus from the environment.

Explanation of incorrect options:

Option A:

Association nerve helps to transfer stimulus from spinal cord to the motor neuron.

Option B:

1. The spinal cord is the continuation of the medulla oblongata of the brain.
2. It is like a cord that emerges from a hole at the base of the skull and runs through the vertebral column.

Option D:

Effectors are present in organs that produce response to detected stimulus.

Final answer: The stimulus from the environment is received by the receptors.