Which of the Following Is Most Abundant in the Trachea

question 20

Multiple Choice

Which of the following is most abundant in the trachea and bronchi, becoming much less dense (and eventually absent) in the bronchioles?

• A) cartilage
• B) goblet cells
• C) macrophages
• D) smooth muscle cells
• E) type II alveolar cells

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Definitions:

Spermatogenesis

The process by which a sperm develops from a spermatid.

Seminiferous Tubules

Narrow, coiled tubules within the testes where sperm are produced.

Cremaster

A muscle that raises and lowers the testes in response to temperature changes and sexual arousal, helping regulate testicular temperature.

Dartos

is a layer of smooth muscle in the scrotum that contracts in response to cold, wrinkling the scrotal skin and helping to regulate the temperature of the testes.