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Pick out the correct statements: a) Pn...

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.

A

(a) and (c) are correct

B

(b) and (d) are correct

C

(a), (c) and (d) are correct

D

(a), (b) and (c) are correct

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question, we need to analyze each statement regarding the respiratory system and identify which ones are correct. ### Step-by-Step Solution: 1. **Statement A: Pneumotaxic centre moderates the functioning of respiratory rhythm centre.** - The pneumotaxic center is located in the brainstem and plays a crucial role in regulating the rhythm of breathing. It helps to control the intensity of breathing by moderating the duration of inhalation. Therefore, this statement is **correct**. 2. **Statement B: Pneumotaxic centre is primarily responsible for regulation of respiratory movements.** - The pneumotaxic center indeed regulates the rate and pattern of breathing. It influences how fast or slow we breathe, making this statement also **correct**. 3. **Statement C: Decrease in pH of cerebrospinal fluid is detected by medulla.** - The medulla contains central chemoreceptors that are sensitive to changes in the pH of cerebrospinal fluid (CSF). A decrease in pH typically indicates an increase in carbon dioxide levels, which the medulla detects. Thus, this statement is **correct**. 4. **Statement D: The role of carbon dioxide in the regulation of respiratory rhythm is quite insignificant.** - This statement is incorrect. Carbon dioxide plays a significant role in regulating respiratory rhythm. Increased levels of carbon dioxide lead to stimulation of the respiratory centers in the brain, prompting adjustments in breathing. Therefore, this statement is **incorrect**. ### Conclusion: The correct statements are: - 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. Thus, the correct options are A, B, and C.
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Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at

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The centres that regulate respiratory rhythm are located in:

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.

How pneumotaxic centre regulates the respiratory rate ?

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

Assertion :- A chemosensitive area is situated adjacent to the rhythm centre which is highly adjacent to the rhythm centre which is highly sensitive to CO_(2 and hydrogen ions. Reason :- The role of oxygen in the regulation of respiratory rhythm is quite insignificant .

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 .

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.

Human beings have a significant ability to maintain and moderate the respiratory rhythm to suit demands of the body. For it we have Respiratory rhythm centre in medulla -R Pneumotaxic centre in pons -RT Chemosensitive area in medulla - C_(1) Peripheral chemoreceptors in aortic arch and carotid artery - C_(2) Find out the correct path for regulation of respiration.