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Question
Mention, if the following statement is True or False
A reflex action is a spontaneous response to a stimulus.
Options
True
False
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Solution
False
Correct Statement: A reflex action is a spontaneous involuntary response to a stimulus.
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RELATED QUESTIONS
The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the questions:
1) Name the phenomenon that is depicted in the diagram. Define the phenomenon.
2) Give the technical term for the point of contact between the two nerve cells.
3) Name the parts numbered 1, 2 and 3.
4) How does the arrangement of neurons in the spinal cord differ from that of the brain?
5) Mention two ways by which the spinal cord is protected in our body.
Define reflex arc. Give the flow chart of a spinal reflex arc.
Give the various functions of brain.
P is a cell (or group of cells) in the human body which is sensitive to a particular type of stimulus and conveys the messages to CNS through nerves Q. On the other hand, R is a part of the human body which can respond to a stimulus according to the instructions sent from the CNS through nerves S.
(a) What is P? Name five organs which contain cells (or group of cells) like P.
(b) Name the nerves Q.
(c) What is R? Give two examples of R.
(d) Name nerves S.
(e) How do messages travel through the nerves Q and S?
Note the relationship between the first two words and suggest the suitable word/words for the fourth place.
Receptor : Sensory nerve :: Motor nerve : ______.
State whether the following is simple reflex, conditioned reflex or neither of the two:
Sneezing: …………….
Reflex action is controlled by the
What type of reflex is the following?
Formation of goose-pimples in cold weather.
What type of reflex is the following?
Blinking of the eye
How is the mode of action in beating of the heart different from reflex actions? Give four examples.
