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Respiratory control centre lies in

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Important Questions on Respiratory System

HARD
Biology>Human Physiology>Respiratory System>Regulation of Respiration
Which of the following shows chemoreceptors for respiration?
MEDIUM
Biology>Human Physiology>Respiratory System>Regulation of Respiration

Match the following columns and select the correct option:-

Column-I Column-II
(a) Pneumotaxic centre (i) Alveoli
(b) O2 Dissociation curve (ii) Pons region of the brain
(c) Carbonic anhydrase (iii) Haemoglobin
(d) Primary site of exchange of gases (iv) RBC
HARD
Biology>Human Physiology>Respiratory System>Regulation of Respiration
When you hold your breath, which of the following gas changes in blood would first lead to the urge to breathe?
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
Rate of breathing is controlled mainly by
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
Complete the following sentence by selecting the correct option.
The breathing rhythm is generated in the _____(i)_____ and is influenced by variation in levels of _____(ii)_____ in the blood.
MEDIUM
Biology>Human Physiology>Respiratory System>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 suit 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 ____(i)_____ is primarily responsible for this regulation. Another centre present in the pons region of the brain called ____(ii)_____ can moderate the functions of the respiratory rhythm centre. Neural signal from this centre can reduce the duration of ____(iii)_____ and thereby alter the respiratory rate. A ____(iv)_____ is situated adjacent to the rhythm centre which is highly sensitive to CO2 and hydrogen ions.
MEDIUM
Biology>Human Physiology>Respiratory System>Regulation of Respiration
Which of the following can activate the chemosensitive area situated adjacent to the rhythm centre?
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
The urge to inhale in humans results from
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
Pneumotaxic centre is located dorsally in the upper pons. Primarily it controls the switch off point of inspiration. Whenever it sends strong signal, which of the following will not occur?
HARD
Biology>Human Physiology>Respiratory System>Regulation of Respiration
Chemosensitive area of respiratory centre in medulla is affected by
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
Complete the following sentence by selecting the correct option.
Receptors associated with aortic arch and carotid artery can recognise changes in ____(i)____ and ____(ii)____ concentration and send necessary signals to ____(iii)____ for remedial actions.
MEDIUM
Biology>Human Physiology>Respiratory System>Regulation of Respiration
Read the following four statements carefully.
(ij Ventral respiratory group of neurons of medulla oblongata can cause both inspiration and expiration.
(ii) The part of the respiratory system starting with the external nostrils up to the terminal bronchioles constitutes the respiratory or exchange part of the respiratory system.
(iii) During swallowing epiglottis can be covered by a thin elastic cartilaginous flap called glottis to prevent the entry of food into the larynx.
(iv) Binding of oxygen with haemoglobin is primarily related to partial pressure of O2 .
Which of the above two statements are correct?
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
The respiratory centre in brain is stimulated by
MEDIUM
Biology>Human Physiology>Respiratory System>Regulation of Respiration
When CO2 concentration in blood increases breathing becomes
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
The rate of breathing is controlled by:
EASY
Biology>Human Physiology>Respiratory System>Regulation of Respiration
When CO2 concentration in blood increases breathing becomes
MEDIUM
Biology>Human Physiology>Respiratory System>Regulation of Respiration
The respiratory centre in the brain is stimulated by
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
Pneumotaxic centre which can moderate the functions of the respiratory rhythm centre is present in
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Biology>Human Physiology>Respiratory System>Regulation of Respiration
Pneumotoxic centre which can moderate the functions of the respiratory rhythm centre is present at
MEDIUM
Biology>Human Physiology>Respiratory System>Regulation of Respiration
Read the given statements and select the correct option.
Statement 1: Rate of breathing is regulated by respiratory centres present in the medulla oblongata.
Statement 2: Changes in the CO2 level of the arterial blood control the rate of breathing.