Refer to the Figure Shown

question 69

Multiple Choice

Refer to the figure shown.
What is the structure labeled by arrow I in the diagram?

• A) Na⁺ channel
• B) Aquaporin
• C) K⁺ channel
• D) Ca²⁺ channel

---

Definitions:

Mental Disorder

A health condition characterized by alterations in thinking, mood, or behavior associated with distress and impaired functioning.

Health-Care Costs

The expense associated with medical services and treatments, including hospital stays, doctor visits, and medications.

Canada

A country in North America, known for its vast landscapes, multicultural cities, and a political system of parliamentary democracy and a constitutional monarchy.

United States

A federal republic in North America consisting of 50 states and a federal district, known for its significant cultural and economic influence globally.