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प्रश्न
List in tabular form three distinguishing features between cerebrum and cerebellum.
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उत्तर
| Cerebrum | Cerebellum |
| Part of fore brain | Part of hind brain |
| Convert part of brain (4/5th) | Second longest part of brain (1/8th) |
| It is associated with voluntary movements, thinking, intelligence | It is associated with positive+ balance |
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संबंधित प्रश्न
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the cells in your nasal passages which perceive the smell?
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.
When we touch a hot plate unknowingly, then this heat is sensed by a receptor P present in our fingers. The receptor triggers and impulse in neuron Q which transmits the message to an organ R which is a part of the central nervous system. Here the impulse is passed on to a neuron S which in turn passes it to a yet another neuron T. The neuron T passes the impulse to a tissue U in our arm. The tissue U then contracts and pulls our hand away from the hot plate.
(a) What is the name of (i) receptor P (ii) neuron Q, and (iii) organ R?
(b) What is (i) neuron S, and (ii) neuron T?
(c) Name the tissue U.
(d) What name is given to the phenomenon in which hand is pulled away quickly from the hot plate?
(e) Name the effector in this whole process.
A cylindrical structure P in our body begins in continuation with medulla and extends downwards. It is enclosed in a bony cage Q and surrounded by membranes R. As many as x pairs of nerves arise from the structure P. The structure P is involved in the reflex actions of our body and conduction of nerve impulses to and from another organ S of our body with which it forms CNS.
(a) Name the structure P.
(b) Name (i) bony cage Q, and (ii) membranes R.
(c) How much is x?
(d) Name the organs S.
(e) What are the reflexes involving structure P only known as?
State whether the following is simple reflex, conditioned reflex or neither of the two:
Lifting up a book: …………………..
Define the following:
Reflex action
Give one example of a conditioned reflex in your own life.
What type of reflex is the following?
Blinking of the eye
Complete the following sentence with appropriate Word
A reflex arc in man is best described as movement of stimuli from:
Give an example for conditioned reflexes.
