When we touch a hot plate unknowingly, then this heat is sensed by a r

1.	When we touch a hot plate unknowingly, then this heat is sensed by a receptor P present in our fingers. The receptor triggers an impulse in neuron Q which transmits the message to an organ R which is a part of the central nervous system. Here the impulse is passed on to a neuron S which in turn passes it to a yet another neuron T. The neuron T passes the impulse to a tissue U in our arm. The tissue U then contracts and pulls our hand away from the hot plate. (a) What is the name of (i) receptor P (ii) neuron Q, and (iii) organ R ? (b) What is (i) neuron S, and (ii) neuron T ? (c) Name the tissue U. (d) What name is given to the phenomenon in which hand is pulled away quickly from the hot plate ? (e) Name the effector in this whole process.
Answer» When we touch a hot plate unknowingly, then this heat is sensed by a receptor P present in our fingers. The receptor triggers an impulse in neuron Q which transmits the message to an organ R which is a part of the central nervous system. Here the impulse is passed on to a neuron S which in turn passes it to a yet another neuron T. The neuron T passes the impulse to a tissue U in our arm. The tissue U then contracts and pulls our hand away from the hot plate. (a) What is the name of (i) receptor P (ii) neuron Q, and (iii) organ R ? (b) What is (i) neuron S, and (ii) neuron T ? (c) Name the tissue U. (d) What name is given to the phenomenon in which hand is pulled away quickly from the hot plate ? (e) Name the effector in this whole process.

When we touch a hot plate unknowingly, then this heat is sensed by a receptor P present in our fingers. The receptor triggers an impulse in neuron Q which transmits the message to an organ R which is a part of the central nervous system. Here the impulse is passed on to a neuron S which in turn passes it to a yet another neuron T. The neuron T passes the impulse to a tissue U in our arm. The tissue U then contracts and pulls our hand away from the hot plate. (a) What is the name of (i) receptor P (ii) neuron Q, and (iii) organ R ? (b) What is (i) neuron S, and (ii) neuron T ? (c) Name the tissue U. (d) What name is given to the phenomenon in which hand is pulled away quickly from the hot plate ? (e) Name the effector in this whole process.

Answer»

When we touch a hot plate unknowingly, then this heat is sensed by a receptor P present in our fingers. The receptor triggers an impulse in neuron Q which transmits the message to an organ R which is a part of the central nervous system. Here the impulse is passed on to a neuron S which in turn passes it to a yet another neuron T. The neuron T passes the impulse to a tissue U in our arm. The tissue U then contracts and pulls our hand away from the hot plate.

(a) What is the name of (i) receptor P (ii) neuron Q, and (iii) organ R ?

(b) What is (i) neuron S, and (ii) neuron T ?

(d) What name is given to the phenomenon in which hand is pulled away quickly from the hot plate ?

(e) Name the effector in this whole process.

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