Figure 46-1
Use the Figure to Answer the Corresponding Question(s) $\rightarrow$

question 41

Multiple Choice

Figure 46-1
Use the figure to answer the corresponding question(s) .
-Refer to Figure 46-1.Put figures 1-4 in the correct order to represent the two-cycle breathing process of birds.

• A) 1\(\rightarrow\) 2\(\rightarrow\) 3 \(\rightarrow\)4
• B) 2\(\rightarrow\) 3 \(\rightarrow\) 4 \(\rightarrow\) 1
• C) 2 \(\rightarrow\)3 \(\rightarrow\)1 \(\rightarrow\)4
• D) 3 \(\rightarrow\)2 \(\rightarrow\) 1\(\rightarrow\) 4
• E) 4 \(\rightarrow\) 3\(\rightarrow\) 2 \(\rightarrow\) 1

---

Definitions:

Chloride Channels

Chloride channels are membrane proteins that allow the passive movement of chloride ions across cell membranes, influencing various physiological processes.

Sodium Channels

Integral membrane proteins that allow sodium ions to pass through the cell membrane, essential for the generation and transmission of electrical signals in neurons and muscle cells.

Hyperpolarization

An increase in a cell's membrane potential, making it more negative and reducing the likelihood of generating an action potential.