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प्रश्न
Explain the difference between of the following pair of terms :
cerebrum and cerebellum
उत्तर
| Cerebrum | Cerebellum |
| The cerebrum is a part of the forebrain. | The cerebellum is a part of the hindbrain. |
| It is the site of our faculties such as learning, reasoning, intelligence, personality and memory. | It helps in maintaining posture and balance of the body. It also enables us to make precise and accurate movements. |
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संबंधित प्रश्न
The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the questions:
1) Name the phenomenon that is depicted in the diagram. Define the phenomenon.
2) Give the technical term for the point of contact between the two nerve cells.
3) Name the parts numbered 1, 2 and 3.
4) How does the arrangement of neurons in the spinal cord differ from that of the brain?
5) Mention two ways by which the spinal cord is protected in our body.
What is spinal cord? What is its main function?
Define reflex arc. Give the flow chart of a spinal reflex arc.
All the voluntary actions of our body are controlled by :
(a) cerebrum
(b) cerebellum
(c) pons
(d) medulla
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
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.
Put a tick mark (✓) against the correct alternative in the following statement:
The smell of good food causes watering of your mouth. It is a
Mention, if the following statement is True or False
Reflex action involves brain
Reflex actions are mediated through ____________.
Why have reflex arcs evolved in animals?
