Which of the following statements is correct?

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The respiratory rhythm center in the medulla region of the brain is primarily regulated by the concentration of $CO_2$ and $H^+$ ions in the blood

Vedclass · Accepted Answer

The respiratory centers are highly affected by the level of $CO_2$,and when $CO_2$ increases,the rate of breathing increases.

Vedclass · Answer

(D) The respiratory rhythm center in the medulla region of the brain is primarily regulated by the concentration of $CO_2$ and $H^+$ ions in the blood.
An increase in $CO_2$ concentration stimulates the chemosensitive area,which in turn signals the respiratory rhythm center to increase the rate of breathing.
Therefore,option $A$ is incorrect and option $D$ is correct.
Vital capacity $(VC)$ is the maximum volume of air a person can breathe in after a forced expiration,which is $IRV + TV + ERV$ (approximately $4600 \ mL$). This is not double the expiratory reserve volume ($ERV$,which is $\approx 1000-1100 \ mL$). Therefore,option $B$ is incorrect.
The human lungs contain millions of alveoli,not $10^3$. Therefore,option $C$ is incorrect.

Similar Questions

The respiration center,which can moderate the functions of the respiratory rhythm center,is located in

Which of the following changes usually tends to occur in plain dwellers when they move to high altitudes?
$I.$ Increased breathing rate
$II.$ Increased $RBC$ production
$III.$ Increased $WBC$ production
$IV.$ Increased thrombocyte count
Choose the correct option.

Define the location and function of the following structures:
$(1)$ Diaphragm
$(2)$ Pneumotaxic centre

The medullary inspiratory centre is always under the direct:

The respiratory centre of the brain is sensitive to:

Vedclass Test Series

Exam Paper Generator

Online Exam Module