Respiration

Ventilation

________ is the process of bringing oxygenated water or air into contact with a gas exchange surface.

Energy

________ is required to wave gills back and forth.

Aquatic animals

________ move through water or move water over their gills for ventilation.

circulatory system

The ________ transports gases between the lungs and the rest of the body.

Countercurrent exchange of water

________ and blood flow maximizes diffusion into blood.Lungs.

Lamellae

________: branch off of filaments.

volume

In a given ________, theres less oxygen available in water than air.

Gills

________: outfoldings of the body that create a large surface area for gas exchange.

Animals

________ can use air or water as a source of oxygen.

osmotic movement

Water also removes heat from the gill surface and can create ________.

Filaments

________: branch off of gill arches.

Lungs

________ may be filled via positive or negative pressure.

Respiratory medium

________: source of oxygen.

lowerRespiratory Media

In the lungs and tissues, oxygen and carbon dioxide diffuse from where their partial pressures are greater to where their partial pressures are ________.

Internal gills

________ are covered by operculum.

Aquatic animals

________ have less available oxygen, and the oxygen availability fluctuates when there are temperature changes in the water.

Ventilation

________ moves the respiratory medium over the respiratory surface.

Lungs

________: an infolding of the body surface.

Aquatic Animals

Obtaining oxygen from water requires greater efficiency than obtaining it from air.Gills in ________.