Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present at:

1. Pons region of brain

2. Thalamus

3. Spinal cord

4. Right cerebral hemisphere

Respiration is controlled by

Consider the characters of a respiratory control center in humans:
I. It is located in pons
II. It moderates the functions of respiratory rhythm center
III. Its absence results in an increase in depth of respiration

The respiratory control center is:

Match the following columns and select the correct option:

Pneumotaxic centre is located in:

1. Pons
2. Cerebrum
3. Medulla oblongata
4. Thalamus

Central chemoreceptors in the brain respond to changes in the

Which substances when present in high level can activate the chemosensitive area present adjacent to rhythm centre?

1. $C{O}_2<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>O_2$

2. $HC{O}_3^{-}<mspace\; width="1em"></mspace>ions<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>O_2$

3. $C{O}_2<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>H^{+}<mspace\; width="1em"></mspace>ions$

4. $H^{+}<mspace\; width="1em"></mspace>ions<mspace\; width="1em"></mspace>and<mspace\; width="1em"></mspace>HC{O}_3^{-}$

Chemosensitive area of respiratory centre medulla is affected by

Human beings have a significant ability to maintain and moderate the respiratory rhythm. This is done by neural control. Which of the following is not related with respiration ?

Aortic arch and carotid artery receptors cannot recognise changes in