Respiratory System Flashcards
What is the pressure in the lungs when inspiration is occurring?
A - lower than atmospheric air pressure
B - lower than intrapleural pressure
C - the same as atmospheric air pressure
D - higher than atmospheric air pressure
A - lower than atmospheric air pressure
Where are breathing control
Centres found?
A - cerebrum
B - pons and medulla
C - lungs
D - cerebellum
B - pons and medulla
What respiratory disorder is characterised by enlarges alveoli and pulmonary fibrosis?
A - emphysema
B - Dyspnea
C - lung cancer
D - chronic bronchitis
A - emphysema
Which of these removes tiny dust particles from alveolar surfaces?
A - cilia and mucus
B - cilia
C - macrophages
D - mucus
C - macrophages
How does air flow between neighbouring alveoli?
A - respiratory bronchioles
B - alveolar macrophages
C - alveolar pores
D - alveolar duct
C - alveolar pores
What part of the brain contains the control centres that directly connect to nerves stimulating the diaphragm and intercostal muscles?
A - cerebrum
B - pons
C - medulla oblongata
D - cerebellum
C - medulla oblongata
