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The alveoli in the lungs are basically like "air sacs" and look like bunches of grapes in diagrams. They basically are VERY tiny and create a large surface area for the lungs where gas exchange can occur (oxygen enters the blood, CO2 enters the alveoli).
They are very efficient because
- they are only one cell thick (so they the gases can cross, or DIFFUSE, easily)
- they are moist (to stop friction and let diffusion occur quickly)
They are covered in tiny blood vessels called capillaries (so more blood gets oxygen faster)
- they are nearly if not totally microscopic (so there are MILLIONS of them)
I hope this helps!!
What else can I help you with?
What is the primary gas exchange site in the respiratory system?
alveoli
What are the 7 respiratory system?
diaphragm the nostrils bronchi lungs trachea alveolus
What is the part of the respiratory system and their function?
the nostrail trachea bronchi lungs alveolus diaphrarm
What is the parts of the respiratory system and their functions?
the nostrail trachea bronchi lungs alveolus diaphrarm
What is the basic structural functional unit of respiratory system?
AIR SACS are the FUNTIONAL UNIT of human respiratory. while we regard ALVEOLI as STRUCTURAL UNIT of human respiratory system.
Where in your respiratory system does the exchange of O2 happen?
Gaseous exchange occurs in the alveoli (singular = alveolus) of the lungs.
What part of the respiratory system is responsible for filtering the air as you breathe?
The respiratory system does not contain any structure that filters air. The trachea and bronchus are lined with a mucous membrane that helps trap debris and carry it out of the body, but this is not a filtration system.
Which is not part of the upper respiratory tract?
Well, the respiratory system includes the lungs, nose, mouth, and your throat.So basically your heart ,brain ,spine ,and many others are not a part of the respiratory system.
In the respiratory system oxygen enters the blood and carbon dioxide leaves the blood in clusters called?
Alveoli (plural) and alveolus (singular)
What are the key vocabulary words of the respiratory system?
Key vocabulary, The Respiratory System: * oxygen * carbon dioxide * lungs * rib cage * alveolus (air sacs in the lungs, check spelling) * inhale * exhale * diaphragm * nasal cavity * oral cavity * breathe * suffocation / suffocate * respiration
What describes the role of surfactant in the respiratory system?
Surfactant helps reduce surface tension within the alveoli, thus preventing each alveolus from callapsing as air moves in and out during respiration.
Does the gas exchange function of the respiratory system occur in the alveoli?
Yes gas is transferred through the alveolar/capillary membrane in the alveolus. Gas moves from the alveolar air sacs to the pulmonary capillaries.
