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Pneumotaxic center which can moderate th...

Pneumotaxic center which can moderate the functions of the respiratory rhythm center is present in

A

Reducing the duration of inspiration

B

Increasing the duration of inspiration only

C

First increasing and then reducing the duration
of expiration

D

Increasing the duration of expiration only

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The correct Answer is:
A
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Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at

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Pick out the correct statements: a) Pneumotaxic centre moderates the functioning of respiratory rhythm centre. b) Pneumotaxic centre is primarily responsible for regulation of respiratory movements. c) Decrease in pH of cerebrospinal fluid is detected by medulla. d) The role of carbon dioxide in the regulation of respiratory rhythm is quite insignificant.

Fill up the blanks in the following paragraph by selecting the correct option. Human beings have a significant ability to maintain and moderate the respiratory rhythm to suti the demands of the body tissues. This is done by the neural system. A specialised centre present in the medulla region of the brain called overset((i))"_______" is primarily responsible for this regulation. Another centre present in the pons region of the brain called overset((ii))"_______" can moderate the functions of the repiratory rhytm cenre. Neutral signal from this cenre cen reduce the duration of overset((iii))"_______" and thereby alter the respiratory rate. A overset((iv))"_______" is situated adjacent to the rhythm centre which is highly sensitive to CO_(2) and hydrogen ions.

Assertion : Pneumotaxic centre, located in the medulla region of the brain, moderates the respiratory rhythm centre. Reason : Pneumotaxic centre controls the switch 'ON' point of inspiration.

Which of the following statements are CORRECT ? I. A specialized center present in the medulla region of the brain called respiratory rhythm center is primarily responsible for the regulation of respiration. II. A Chemosensitive area is situated adjacent to the rhythm which is highly sensitive to O_2,CO_2 and hydrogen ions . III . Receptors associated with aortic arch and carotid artery also can recognize changes in CO_2 and H^+ concentration and send necessary signals to the rhythm center for remedial actions. IV The neural signal from the pneumatic center can increase the duration of inspiration and thereby alter the respiratory rate .

Assertion : Pneumotaxic centre is situated in Pons Reason: It can regulate the functioning of rhythm centre

AAKASH INSTITUTE ENGLISH-BREATHING AND EXCHANGE OF GASES -ASSIGNMENT SECTION - B
  1. What is the value of pO(2) in alveoli and tissues respectively?

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  2. How many layers form the diffusion membrane ?

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  3. What is the percentage of O(2) transported in dissolved form through...

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  4. How many molecules of O2 can associate with a molecule of haemoglobin ...

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  5. To which part of Hb, CO(2) binds?

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  6. Which of the following condition is not reponsible for shifting the ...

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  7. Which of the following factors favour the formation of HbCO2?

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  8. Pneumotaxic center which can moderate the functions of the respiratory...

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  9. A chronic disorder in which alveolar walls are damaged due to excess...

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  10. Which of the following is not a symptom of asthma?

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  11. In mature mammalian erythrocytes, the respiration is

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  12. Which of the following is not a character of respiratory surface?

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  13. Skin of man cannot act as respiratory organ because

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  14. Adam's apple is another name for

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  15. Ring - like cartilage of larynx is known as

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  16. Which of the following prevents collapsing of Trachea

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  17. The number of alveoli in the human lungs has been estimated to be appr...

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  18. In human, oblique fissure is present in

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  19. If a person exhales out forcefully by applying all his efforts, what w...

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  20. The amount of oxygen transported by 100ml of blood under strenuous con...

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