Flashcards
Lung Structure
Cards in this deck (13)
- 1The Mammalian gas exchange organs are:The Lungs
- 2Name 3 structures of air passes through in order to reach the lungs:Trachea
Bronchi
Bronchioles - 3What feature of the gas exchange surface results in an increased rate of gas exchange?Large Surface area
- 4Why are the gas exchange surfaces very thin?To create a short diffusion pathway
- 5Movement of the environmental medium i.e. air and movement of the internal medium i.e. blood maintain a…Diffusion Gradient
- 6When you breathe in and out, the alveoli stretch and recoil, what sort of tissue enables this to happen?Elastic Tissue
- 7Name another type of fibre that alveoli are lined withCollagen
- 8During inspiration and expiration, describe what the intercostal muscles do:Inspiration: Contract
Expiration: Relax - 9During inspiration and expiration what does the Diaphragm do?Inspiration: Contract and flatten
Expiration: Relax and dome up - 10During inspiration and expiration the volume of the lungs...Inspiration: Increases
Expiration: Decreases - 11During inspiration and expiration, the pressure of the lungs:Inspiration: Decreases
Expiration: Increases - 12During inspiration and expiration, the air moves...Inspiration: Air moves in
Expiration: Air moves out - 13What is the equation of pulmonary ventilation:Tidal volume x expiration rate
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- A-Level Biology (1.4 Lung and Lung Disease) Flashcards on Lung Structure, created by Elena Cade on 28/04/2015.
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- Elena Cade
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