Refer to the Figure Shown

question 27

Multiple Choice

Refer to the figure shown.
What the mechanism is occurring at IV in the figure?

• A) Second messengers have led to the opening of a K⁺ channel.
• B) Second messengers have led to the opening of a Ca²⁺ channel.
• C) Second messengers have led to the opening of a cation channel, causing depolarization.
• D) G proteins open a sodium channel.

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Definitions:

Flat Cells

A type of cell with a thin, flat shape, often found in layers lining surfaces such as the skin or blood vessels; also known as squamous cells.

Organ System

Group of related organs working together; examples are the digestive and endocrine systems.

Muscular

Relating to or constituting muscle or muscles, particularly regarding strength, appearance, or the ability to perform physical tasks.

Nervous

relating to the nerves or nervous system, or described as easily agitated or anxious.