6 Questions
Inhalation/Inspiration – the drawing of air into the lungs
Occurs when there is a negative (low) pressure within the thorax, Decreases pressure (low) within the thorax
Exhalation/Expiration – the expulsion of air from the lungs
Occurs when there is a positive (high) pressure within the thorax
Resting respiratory rate is controlled by the respiratory centre in the brainstem
True
Match the following
Passive diffusion: = Movement of molecules down a concentration gradient pulmonary artery = Blood in the capillaries surrounding the alveoli is from { } contains deoxygenated blood pulmonary vein = returns blood to the heart with oxygenated blood and then it goes to body. concentration gradient = moving from an area of higher levels of CO2 to levels of lower CO2
What is alveoli walls made of ?
membrane cells
What enables efficient gas exchange in the lunges
large surface area and small distance for O2 and CO2 to diffuse across
Test your knowledge on the process of drawing air into the lungs, including inhalation and inspiration. Understand the mechanisms and functions of the respiratory system.
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