Which of the Following Examples Illustrates the Process of Countercurrent

question 19

Multiple Choice

Which of the following examples illustrates the process of countercurrent exchange?

• A) flow of water across the gills of a fish and the blood within those gills
• B) flow of blood in the dorsal vessel of an insect and that of air within its tracheae
• C) flow of air within the primary bronchi of a human and the blood within the pulmonary veins
• D) flow of water across the skin of a frog and the blood flow within the ventricle of its heart

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Definitions:

Functional Fixedness

The tendency to view an object in terms of its name or familiar usage.

Divergent Thinking

A mental approach or technique for producing inventive ideas through the examination of numerous potential answers.

Convergent Thinking

A cognitive process where an individual focuses on finding a single, correct solution to a problem, as opposed to generating multiple solutions.

Centration

A cognitive limitation in early childhood development, where the focus is on one salient aspect of a situation, neglecting other relevant features.