Home
Class 12
BIOLOGY
Chemosensitive areas are situated close ...

Chemosensitive areas are situated close to respiratory rhythm centers and are found in CNS. These are mainly sensitive to

A

`CO_2` but not `H^+` changes

B

`H^+` but not `CO_2` changes

C

`CO_2 and H^+` changes both

D

`CO_2 and O_2` but not `H^+` changes

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding chemosensitive areas in the central nervous system (CNS) and their sensitivity, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Chemosensitive Areas**: - Chemosensitive areas are specialized regions in the CNS that respond to chemical changes in the body, particularly those related to respiratory function. 2. **Location**: - These areas are located close to the respiratory rhythm centers in the brain, which are responsible for controlling the rate and depth of breathing. 3. **Function of Chemosensitive Areas**: - The primary role of these chemosensitive areas is to monitor the levels of certain chemicals in the blood, especially carbon dioxide (CO2) and hydrogen ions (H+). 4. **Sensitivity to CO2 and H+**: - When the concentration of CO2 in the blood increases, it leads to an increase in H+ ions (lowering the pH), which signals the chemosensitive areas to activate. - This activation prompts the respiratory centers to adjust breathing patterns to remove excess CO2 and H+, thereby maintaining homeostasis. 5. **Conclusion**: - Therefore, chemosensitive areas are mainly sensitive to carbon dioxide (CO2) and hydrogen ions (H+). ### Final Answer: Chemosensitive areas are mainly sensitive to carbon dioxide (CO2) and hydrogen ions (H+). ---
Promotional Banner

Similar Questions

Explore conceptually related problems

A chemosentive area is situated adjacent to respiratory rhythm centre. Whis is highly sensitive to ____________ and _____________ ions.

Chemosensitive area of respiratory centre in medulla is affected by

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 .

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

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 .

A specialized center called respiratory rhythm center is primarily responsible for the regulation of respiration . It is located in

In which of the following, is the respiratory rhythm center located to regulate the process of respiration

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.

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.

Which of these statements is/are true ? (i) The surface area avaiable for cellular function in a prokaryotic cell is less than that in a eukaryotic cell. (ii) The total genome size of a prokayotic cell is always less than that of a eukaryotic cell. (iii) Unlike eukaryotes, no special respiratory respiratory organelles are found in prokaryotes. Hence they respire at a much lesser rate than eukaryotes. (iv) Eukaryotic cells show various membrane bound organelles such as chloroplasts and nucles while ribosomes are the only membrane bound organelles found is prokaryotes.