Gavin Has Recently Sustained a Traumatic Brain Injury

question 99

Multiple Choice

Gavin has recently sustained a traumatic brain injury.This kind of injury occurs when an impact to the head causes the brain to ____.

• A) lose cerebrospinal fluid
• B) stretch and tear because of violent movement
• C) deteriorate due to a loss of oxygen and blood
• D) shut down certain cortices as an internal failsafe

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Definitions:

Sodium-Potassium Pump

A vital cell membrane protein that pumps sodium ions out of and potassium ions into cells, essential for maintaining cellular electrochemical gradients.

ATP

Adenosine triphosphate, a molecule that carries energy within cells, serving as a primary energy currency for cellular processes.

Exocytosis

A process by which a cell transports secretory products through the cytoplasm to the plasma membrane and then into the extracellular space.

Endocytosis

The active transport of substances into the cell by the formation of invaginated regions of the plasma membrane that pinch off and become cytoplasmic vesicles.