Respiratory Gas Transport Mechanisms
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Questions and Answers

What are the two major mechanisms of respiratory gas transport?

Diffusion and convection

What is convective gas transport also known as?

Transport by bulk flow

What are the two principal processes by which animals set fluids in motion to transport gases?

Breathing and the pumping of blood

What type of flow occurs in the lungs of mammals?

<p>Tidal flow</p> Signup and view all the answers

What are the two types of fluid flow mentioned in the text that affect gas transport?

<p>Unidirectional flow through a tube and tidal flow</p> Signup and view all the answers

What is the mechanism called when a fish holds its mouth open and swims powerfully forward to ram water into its buccal cavity and across its gills?

<p>Ram ventilation</p> Signup and view all the answers

What is the process by which O2 is transported to the gas-exchange membrane from the environmental medium?

<p>External respiration</p> Signup and view all the answers

How does oxygen cross the gas-exchange membrane into an animal?

<p>Oxygen crosses by diffusion</p> Signup and view all the answers

What are the two types of ventilation mentioned in the text?

<p>Active and Passive ventilation</p> Signup and view all the answers

How is water flow across the gills of teleost (bony) fish maintained?

<p>Water flow is maintained by the synchronization of buccal pressure pump and opercular suction pump</p> Signup and view all the answers

What is the term for the process of gas molecules being carried from place to place by fluid flow?

<p>Convection</p> Signup and view all the answers

What are the two respiratory gases referred to in the text?

<p>O2 and CO2</p> Signup and view all the answers

What are the two principal processes by which animals set fluids in motion to transport gases, and what do they speed the transport of?

<p>Breathing and the pumping of blood; O2 and CO2</p> Signup and view all the answers

What is the term for the type of flow that occurs in the lungs of mammals?

<p>Tidal flow</p> Signup and view all the answers

What are the two major mechanisms of respiratory gas transport mentioned in the text?

<p>Diffusion and convection</p> Signup and view all the answers

What is the process by which oxygen crosses the gas-exchange membrane into an animal?

<p>Diffusion</p> Signup and view all the answers

What is the term for the mechanism in which a fish holds its mouth open and swims powerfully forward to ram water into its buccal cavity and across its gills?

<p>Ram ventilation</p> Signup and view all the answers

What is the specific classification for fishes that depend solely on ram ventilation to breathe?

<p>Obligate ram ventilators</p> Signup and view all the answers

What is the thin layer of tissue that separates the internal tissues of the animal from the environmental medium (air or water)?

<p>Gas-exchange membrane</p> Signup and view all the answers

How is water flow across the gills of teleost (bony) fish maintained?

<p>By the synchronization of two pumps: buccal pressure pump and opercular suction pump</p> Signup and view all the answers

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