Which of the Following Respiratory Structures Will Have the Least

question 29

Multiple Choice

Which of the following respiratory structures will have the least amount of cartilage and the thinnest walls?

• A) larynx
• B) trachea
• C) bronchi
• D) bronchioles
• E) pharynx

---

Definitions:

Intercalated Discs

Specialized structures in cardiac muscle cells that facilitate cell-to-cell communication and contraction through gap junctions and desmosomes.

Terminal Cisternae

Enlarged areas of the sarcoplasmic reticulum around the muscle's transverse tubules involved in calcium storage and release.

T-tubules

Tubular extensions of the cell membrane into muscle cells, facilitating rapid transmission of action potentials to ensure efficient contraction.

Desmosomes

Specialized cell structures that function as anchors, attaching cells together within tissues like the skin and heart muscle.