Matching Match Each Pseudo-Class with the Appropriate Description

question 23

Multiple Choice

Matching
Match each pseudo-class with the appropriate description.
-the element has the focus

• A):active
• B):checked
• C):focus
• D):required
• E):valid

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Definitions:

Hemoglobin

A red protein responsible for transporting oxygen in the blood of vertebrates, giving red blood cells their color.

Pontine Respiratory Neurons

Neurons located in the pons of the brainstem that play a critical role in regulating the rhythm of breathing.

Medulla Oblongata

The lowest part of the brainstem, connecting the brain to the spinal cord and controlling vital functions such as breathing and heart rate.

Blood Oxygen Levels

A measure of how much oxygen is being carried in the blood, critical for the metabolic processes in the cells.