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Respiratory System
Respiratory System
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11th
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20 Terms
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1
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Goblet cells
________ and cilia are found in trachea and bronchi.
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microbes
Goblet cells and cilia protect alveoli in the lungs from inhaled dust and ________.
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bronchioles
The walls of the trachea, bronchi and ________ are lined with smooth muscle which can contract and relax.
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Trachea
________ is a tube lined with C- shaped supporting rings.
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waste
The respiratory system also removes ________ such as carbon dioxide.
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smooth muscle
During exercise, ________ will relax which causes airway to expand and allows more air to flow through them.
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smooth muscle
Contracting ________ is a cause of asthma.
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Goblet cells
________ produce sticky mucus which traps them.
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Smooth muscle
________ will contract if toxic gas is present to restrict airflow by narrowing the airways.
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Inspiration
Breathing in is known as _________
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Expiration
Breathing out is known as __________
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nasal cavity
As the air passes through the _______ it is warmed slightly.
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trachea
Air must pass through the ________
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cartiliage
The C shaped supporting rings are made out of _______
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expand
The trachea will ______ to let more air in
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diffusion
Gas exchange happens in the alveoli by _______
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moist lining
Oxygen dissolves in the __________ so it can diffuse into the blood
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concentration gradient
Large capillary network maintains diffusion and _____________
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diffusion
Large surface area increases
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Thin
______ walls means there is a short diffusion distance