Advertisements
Advertisements
प्रश्न
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
उत्तर
(c) cerebral reflex
The contraction of the pupil of the eye in the presence of a bright light is an example of cerebral reflex. A reflex action that involves the brain is called cerebral reflex. It is found in the organs present in the head that are directly connected to the brain.
APPEARS IN
संबंधित प्रश्न
Give examples of unconditional reflexes
If we happen to touch a hot object unknowingly, we immediately pull back our hand. What is this type of action known as?
What are the various sense organs in our body?
All the voluntary actions of our body are controlled by :
(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
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
With the help of suitable example, describe reflex action.
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.
Sudden application of brakes of the cycle on sighting an obstacle in front
What type of reflex is the following?
Formation of goose-pimples in cold weather.
Give an example for conditioned reflexes.
