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Question
State whether the following is
Constriction of pupil
Options
simple reflex
conditioned reflex
None of the above
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Solution
Simple reflex
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RELATED QUESTIONS
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the cells in your nasal passages which perceive the smell?
Which of the following statements are true?
(i) sudden action in response to something in the environment is called reflex action
(ii) sensory neurons carry electrical signals from spinal cord to muscles in a reflex action
(iii) motor neurons carry signals from receptors to spinal cord in a reflex action
(iv) the pathway of transmitting signals from a receptor to a muscle is a reflex action
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.
Complete the following statement by choosing the correct alternative from the choice given in bracker:
Reflex action is controlled by
(i) brain (ii) spinal cord
(iii) autonomic (iii) peripheral nervous system
Define the following:
Reflex action
State whether the following is
Playing on the Keyboard
Mention, if the following statement is True or False
Reflex action involves brain
In reflex action, the reflex arc is formed by ______
Differentiate between Voluntary and involuntary actions.
Which one of the following is not a simple reflex?
