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प्रश्न
Categorise the following under stimulus and response.
Withdrawal of hand on touching a hot plate
उत्तर
Stimulus: Touching a hot plate
Response: Withdrawal of hand.
संबंधित प्रश्न
Name the function of cerebrum.
The olfactory receptors in humans are located in :
(a) eyes
(b) tongue
(c) ears
(d) nose
When we touch a hot plate unknowingly, then this heat is sensed by a receptor P present in our fingers. The receptor triggers and 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.
Multiple choice question. Tick (✓) the correct choice:
Reflex actions occur under the control of
- brain
- medulla oblongata
- spinal cord
- cerebrum
Define voluntary and reflex actions. Give examples of each.
Define the following:
Reflex action
State whether the following is simple reflex, conditioned reflex or neither of the two.
Knitting without looking
Give Reason:
The hand automatically shows the direction to turn a cycle without thinking.
The reflex arc which is made up of one sensory and one motor neuron is ______
Which of the following is not involved in Knee-jerk reflex?
