What Is the Purpose of the Sphincters Where the Arterioles

question 42

Multiple Choice

What is the purpose of the sphincters where the arterioles branch into the capillary beds?

• A) To slow down blood flow so the capillaries don't burst under pressure
• B) To control blood flow to different areas of the body depending on activities
• C) To speed up blood flow into the capillary bed for faster oxygen exchange
• D) To block blood from coming back out of the capillary bed too quickly to allow for more complete diffusion of oxygen
• E) They remove carbon dioxide from blood passing through.

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Definitions:

Colonized

The process by which one organism inhabits, takes over, or establishes control over a new area, often referring to organisms spreading into new habitats.

Neurotransmitters

Chemicals that transmit signals across a synapse from one neuron to another neuron, muscle, or gland cell.

Dopamine

A neurotransmitter in the brain that plays key roles in reward, motivation, memory, attention, and even regulating body movements.

Motivation

The reasons or drives behind an individual's actions or behaviors, often influencing how and why actions are taken.