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प्रश्न
How do we detect the smell of an agarbatti (incense stick)?
उत्तर
When the smell of the incense stick reaches to our nose then the factory receptors present in our nose detects it send this information in fore brain in the form of electrical signals. The brain interprets this information as the smell of incense sticks where it is already stored.
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संबंधित प्रश्न
What is the role of the brain in reflex action?
How are involuntary actions and reflex actions different from each other?
Give examples of unconditional reflexes
Briefly explain the following terms : Reflex action
State whether coughing is a voluntary action or reflex action.
What is spinal cord? What is its main function?
Write the names of the regions in hindbrain. Give one function of each region.
The contraction of pupil of the eye in the presence of bright light is an example of :
(a) Voluntary reflex
(b) Spinal reflex
(c) Cerebral reflex
(d) Adrenal reflex
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?
What is the difference between reflex action and voluntary action?
Explain the mechanism of reflex action with the help of a suitable diagram.
List in tabular form two differences between reflex action and walking.
Reflex action is controlled by the
Explain the following term :
Conditioned reflex
State whether the following is simple reflex, conditioned reflex or neither of the two.
Lifting up a book
State whether the following is
Cleaning
What type of reflex is the following?
Sweating in summer
Complete the following sentence with appropriate Word
Which of the following is not a natural reflex action?
