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प्रश्न
Give the functions of medulla.
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उत्तर
The medulla controls various involuntary actions such as the heart beat, breathing, blood pressure and peristaltic movements of the alimentary canal.
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संबंधित प्रश्न
How do we detect the smell of an agarbatti (incense stick)?
What is the role of the brain in reflex action?
Briefly explain the following terms : Reflex action
Which of the following is not a natural reflex action?
A. Knee-jerk
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D. Sneezing when any irritant enters the nose
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Fill in the following blanks with suitable words :
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State whether the following is simple reflex, conditioned reflex or neither of the two:
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List in tabular form two differences between reflex action and walking.
What is a reflex action?
Give one example of a conditioned reflex in your own life.
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Identify the parts labeled as A to E and select the correct option.
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The diagram given below shows the internal structure of a spinal cord depicting a phenomenon. Study the diagram and answer the following questions.
 |
- 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.
