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If We Happen to Touch a Hot Object Unknowingly, We Immediately Pull Back Our Hand. What is this Type of Action Known As? - Science

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प्रश्न

If we happen to touch a hot object unknowingly, we immediately pull back our hand. What is this type of action known as?

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उत्तर

After touching a hot object unknowingly, the hand is automatically pulled back at once. This type of action is known as a reflex action. 

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अध्याय 2: Control and Coordination - Exercise 2 [पृष्ठ ११५]

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लखमीर सिंग Biology (Science) [English] Class 10
अध्याय 2 Control and Coordination
Exercise 2 | Q 3 | पृष्ठ ११५

वीडियो ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्न

How do we detect the smell of an agarbatti (incense stick)?


When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the smell of the food?


The involuntary actions in the body are controlled by :

(a) medulla in forebrain
(b)medulla in hindbrain
(c) medulla in spinal cord
(d) medulla in midbrain


The part of brain which controls the involuntary action such as heart beat, breathing, blood pressure, etc. is :
(a) pons
(b) medulla
(c) cerebrum
(d) cerebellum


Which of the following statements is correct about receptors?


The part of brain which takes part in regulating respiration in the human body is :
(a) medulla
(b) pons
(c) cerebellum
(d) cerebrum


One of the following gives the correct sequence of the components in a reflex arc. This is:


Note the relationship between the first two words and suggest the suitable word/words for the fourth place.

Stimulus : Receptor :: Impulse : ______.


State whether the following is simple reflex, conditioned reflex or neither of the two.

Sudden application of brakes of the cycle on sighting an obstacle in front


List in tabular form three distinguishing features between cerebrum and cerebellum.


Give two examples of reflex actions in our daily life.

State whether the following is simple reflex, conditioned reflex or neither of the two.

Blushing


State whether the following is simple reflex, conditioned reflex or neither of the two.

Lifting up a book


State whether the following is

Salivation when food is put in the mouth.


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


Mention, if the following statement is True or False
Reflex action involves brain


Give an example for conditioned reflexes.


If after cutting through dorsal root of a spinal nerve of a mammal, the associated receptor in skin was stimulated the animal would ______.


The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the following questions.

  1. Name the phenomenon shown in the figure and define the same.
  2. Identify the parts labelled as 1 and 2. Write one functional difference between these two.
  3. Name the bony protective covering and the membranous protective covering of the spinal cord.
  4. Label the guidelines 3 and 4.
  5. How is the labelled part 3 different from part 4 with respect to its composition (part of neuron)?
  6. Give the technical term for the point of contact between the two nerve cells.
  7. Name the fluid filled inside the central canal of spinal cord.
  8. Name the term used for a small gap between two neurons.
  9. Give one example of a neurotransmitter.
  10. Draw a neat diagram of a nerve cell and label the parts: Perikaryon, Node of Ranvier, Myelin sheath and Axon terminals.

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