Question

For a receiving tennis player, explain what will be the path from the stimulus to the response is.

CBSE Class X Science SA 2 (3 Marks)

Answer 1

(i) To receive the stimulus (tennis ball on the racquet).

(ii) Sensory neurons of a spinal nerve conveys the stimulus to spinal cord.

(iii)Spinal cord to interpret the stimulus and give appropriate command to motor neurons.

(iv) Motor neurons of a spinal nerve to convey motor command to effector.

(v) Effectors or muscles to execute the effect by muscular movement (hit the tennis ball from the racquet).

Answer 2

Answer:

Eye receive stimulus, i.e., the vision of ball. Receptor receives a stimulus and stimulates nerve endings. Impulses are produced. Impulses travei along receptor neuron to the spinal cord. In the spinal cord, they are transmitted via synapse to relay neurons. Through another synapse, impulses are transmitted from relay to effector neuron. Effector neuron receive decision from brain. Effector neuron moves to effector i.e., arm. The bicep/tricep muscles arrange themselves for the response.

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