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प्रश्न
Name the function of cerebrum.
State one function of cerebrum.
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उत्तर
The brain is primarily responsible for higher cognitive activities such as thinking, memory, perception, and voluntary movement. It also analyzes sensory data and regulates conscious consciousness.
संबंधित प्रश्न
How are involuntary actions and reflex actions different from each other?
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 meant by receptors and effectors? Give two examples of each.
Explain the difference between of the following pair of terms :
receptor and effector
The part of brain which takes part in regulating respiration in the human body is :
(a) medulla
(b) pons
(c) cerebellum
(d) cerebrum
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?
Write down the following activities in the correct order for a simple reflex arc:
(a) impulse travels in the motor fibre
(b) impulse travels in the sensory fibre
(c) effector organ stimulated
(d) impulse crosses the synapse
Differentiate between natural reflex and conditioned reflex. Give examples to illustrate your answer.
Complete the following statement by choosing the correct alternative from the choice given in bracker:
Reflex action is controlled by
(i) brain (ii) spinal cord
(iii) autonomic (iii) peripheral nervous system
State whether the following is simple reflex, conditioned reflex or neither of the two:
Blushing: ……………….
Two hungry boys (A and B) enter a restaurant and find a table decorated as follows:
Boy B starts salivating but not A. Explain the reason for this difference.
List in tabular form two differences between reflex action and walking.
List in tabular form three distinguishing features between cerebrum and cerebellum.
State whether the following is simple reflex, conditioned reflex or neither of the two.
Knitting without looking
Complete the following sentence with appropriate Word
Which of the following is not a natural reflex action?
In reflex action, the reflex arc is formed by ______
Differentiate between Voluntary and involuntary actions.
The reflex arc which is made up of one sensory and one motor neuron is ______
Why have reflex arcs evolved in animals?
