A Mole Becomes Suspicious When It Is Greater Than 6

question 2

Multiple Choice

A mole becomes suspicious when it is greater than 6 mm in diameter.How big is 6 mm approximately?

• A) just barely visible, about the size of a pin prick
• B) about the same as one of the letters in this question
• C) about the size of a pencil eraser
• D) about the size of a nickel
• E) about the size of a quarter

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Definitions:

Choroid Plexus

Specialized tissue in the ventricles of the brain that produces cerebrospinal fluid, playing a key role in protecting and nourishing the brain and spinal cord.

Cerebrospinal Fluid

A clear, colorless body fluid found in the brain and spinal cord, acting as a cushion and delivering nutrients to the central nervous system while removing waste.

Cerebral Aqueduct

A narrow channel in the brain that connects the third and fourth ventricles, allowing cerebrospinal fluid to flow between them.

Thalamus

A structure in the brain that relays sensory information to the cerebral cortex and regulates consciousness, sleep, and alertness.