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प्रश्न
Name the most important part of the human brain.
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उत्तर
The cerebrum (forebrain) is the most important part of the human brain.
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संबंधित प्रश्न
How are involuntary actions and reflex actions different from each other?
If we happen to touch a hot object unknowingly, we immediately pull back our hand. What is this type of action known as?
What is the difference between a voluntary and an involuntary action? Which kind of action is digestion? Explain your choice.
When you smell a favourite food your mouth begins to water (that is, you secrete saliva). Write down what is the example of the smell of the food?
What is a reflex action? Explain with the help of an example.
Give the various functions of brain.
Which of the following helps in maintaining posture and balance of the human body?
Which of the following statements is correct about receptors?
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
With the help of suitable example, describe reflex action.
State whether the following is simple reflex, conditioned reflex or neither of the two:
Sneezing: …………….
What is the difference between reflex action and voluntary action?
What is a reflex action?
State whether the following is
Blinking
What type of reflex is the following?
Knitting and swimming
A change in the environment that causes an animal to react is called ______.
Categorise the following under stimulus and response.
Pain in the eye if something falls into it.
The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the following questions.
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- Name the phenomenon shown in the figure and define the same.
- Identify the parts labelled as 1 and 2. Write one functional difference between these two.
- Name the bony protective covering and the membranous protective covering of the spinal cord.
- Label the guidelines 3 and 4.
- How is the labelled part 3 different from part 4 with respect to its composition (part of neuron)?
- Give the technical term for the point of contact between the two nerve cells.
- Name the fluid filled inside the central canal of spinal cord.
- Name the term used for a small gap between two neurons.
- Give one example of a neurotransmitter.
- Draw a neat diagram of a nerve cell and label the parts: Perikaryon, Node of Ranvier, Myelin sheath and Axon terminals.
