Advertisements
Advertisements
प्रश्न
Advertisements
उत्तर
Reflex action - It is an immediate and involuntary response to a stimulus.
Example - 1. Blinking of eyelids on exposure to light .
2. Knee jerk.
APPEARS IN
संबंधित प्रश्न
Give three examples of reflex actions.
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the gland which is stimulated to secrete saliva.
Give the various functions of brain.
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:
Lifting up a book: …………………..
Explain the mechanism of reflex action with the help of a suitable diagram.
Give an example for conditioned reflexes.
Reflex arc allows the rapid response of the body to a stimulus.
If after cutting through dorsal root of a spinal nerve of a mammal, the associated receptor in skin was stimulated the animal would ______.
Given alongside is a partial diagrammatic representation of a certain phenomenon pertaining to the nervous system.
 |
- Name the parts numbered 1-7.
- Name the phenomenon that the diagram depicts and define it.
- Give the technical term for the point of contact between two nerve cells.
- Name the parts not shown in the diagram that should be included to complete the pathway of the phenomenon.
