Bird Lungs Are Efficient Because of

question 56

Multiple Choice

Bird lungs are efficient because of

• A)their large size.
• B)unidirectional and continuous air flow.
• C)countercurrent blood flow.
• D)capacity for discontinuous ventilation.

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Definitions:

Adipose Capsule

A layer of fat that surrounds organs, providing them with cushioning and insulation.

Renal Columns

Inward extensions of the cortical tissue of the kidney, separating the renal pyramids and helping support the structure of the kidney.

Minor Calyces

Small cup-shaped structures in the kidney that funnel urine into the major calyces.