Respiratory Control Centres
Which respiratory group controls the basic rhythm of breathing by initiating inspiration?
A) Dorsal Respiratory Group
Where are peripheral chemoreceptors located?
A) Carotid and aortic bodies
Which of the following is a common symptom associated with difficulty breathing?
Wheezing
What commonly causes wheezing in asthma patients?
Narrowing of the airways due to muscle constriction
What does the term "hypoxia" refer to?
Low oxygen in tissues
Which centre limits the duration of inspiration to regulate breathing rate and depth?
Pneumotaxic Centre
Central chemoreceptors in the medulla are most sensitive to which change in blood chemistry?
High carbon dioxide
In conditions like COPD, which type of problem leads to breathlessness?
B) Airway obstruction
Wheezing is often caused by which type of flow through the airways?
In response to hypercapnia (high CO₂), which of the following typically happens?
Increased breathing rate
The Apneustic Centre is located in which part of the Brain and is responsible for what function?
What percentage of the ventilatory response to increased CO₂ is provided by central chemoreceptors?
80%
Which receptor type is activated when the respiratory system cannot meet oxygen demand, leading to the sensation of breathlessness?
A) Baroreceptors
B) Mechanoreceptors
C) Chemoreceptors
D) Thermoreceptors