18 Questions
Where does internal respiration occur?
Tissue at the cellular level
Which part of the body is responsible for the physiological exchange of gases within the cell?
Cellular physiological process
Where does the apex of the lung rest in the chest area?
3-4 cm above the clavicles
Which part of the brain is responsible for being the inspiratory center?
Medulla Oblongata
Which nerve innervates the diaphragm, a muscle essential for breathing?
Phrenic nerve
Which muscle is NOT considered an accessory muscle for breathing?
Biceps brachii
What is the primary function of the respiratory system?
Exchanging oxygen and carbon dioxide through respiration
Which muscle is primarily responsible for respiration?
Diaphragm
On which level does the physiological process of respiration occur?
External, internal, and cellular
Which structures are contained in the mediastinum?
Heart and esophagus
What is the function of the phrenic nerve in respiration?
Innervates the diaphragm for breathing
Where does external respiration occur in the respiratory system?
Between alveoli and blood through alveolar-capillary membrane
Which primary muscle is responsible for inspiration during normal breathing?
Diaphragm
What is the main stimulus for breathing under normal circumstances?
Rise in carbon dioxide levels
Which part of the respiratory system usually experiences fibrosis with age?
Alveoli
During pregnancy, what respiratory change occurs as the diaphragm rises?
Increased inspiratory volume
Which condition results in a less effective increase in respiration compared to hypercapnia?
Hypoxemia
What happens to the chest cavity during expiration?
Decreases in size
Test your knowledge on internal respiration and the anatomical structures of the lungs. This quiz covers the cellular physiological process of gas exchange, as well as details about the borders and apex/base of the lungs.
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