The Trachea Is

question 15

Multiple Choice

The trachea is

• A)"the problem" in asthma.
• B)the site of gas exchange.
• C)composed primarily of smooth muscle.
• D)a large airway that splits into two bronchi.

---

Definitions:

Leaf Color

The color of leaves, determined by pigments such as chlorophyll and anthocyanins, and indicative of health or seasonal changes.

Autumn

A season of the year following summer and preceding winter, characterized by the cooling of temperatures and the falling of leaves from deciduous trees.

Jan Baptista Van Helmont

A 17th-century Flemish scientist known for his work in chemistry, physiology, and medicine, and for pioneering work on gases.

Tree Growth

The process by which trees increase in size and mass over time, often as a result of cell division and expansion in their stems, branches, and roots.