What Are the Most Numerous Cells in the Lungs

question 4

Multiple Choice

What are the most numerous cells in the lungs?

• A) Mucosal cells
• B) Type I alveolar cells
• C) Type II alveolar cells
• D) Dust cells
• E) Vibrissal cells

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Definitions:

Homeotic Genes

Genes that control the development of anatomical structures in organisms, ensuring parts develop in the correct locations.

Transcription Factors

Proteins that regulate gene expression by binding to DNA sequences, thereby controlling the transfer of genetic information from DNA to mRNA.

Adult Stem Cells

Cells derived from body tissues that can differentiate into some specific cell types (e.g., blood cells, neuronal cells, or muscle cells), but not all types of cells found in an organism. See pluripotent stem cells and totipotent stem cells.

Homeobox

A short (180-nucleotide) DNA sequence that characterizes many homeotic genes as well as some other genes that play a role in development.