Air Flow Through Bird Lungs Is a Continuous Circuit; the Air

question 86

True/False

Air flow through bird lungs is a continuous circuit; the air flows in one direction only.

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Definitions:

Fibroblast Cells

A type of cell found in connective tissue that produces collagen and other fibers, playing a crucial role in wound healing and tissue repair.

Growth Factors

A group of more than 50 extracellular peptides that signal certain cells to grow and divide.

Choanoflagellates

Collared flagellate protists; opisthokonts closely related to animals.

Signal Transduction Pathways

Systems of molecules in a cell that work together to transmit signals from the cell's surface to its interior, triggering a response.