A 4-Year-Old Boy Complains at Preschool That He Cannot Tell

question 60

Multiple Choice

A 4-year-old boy complains at preschool that he cannot tell the difference between colors. A profound inability to see color is called:

• A) achromatopsia.
• B) amblyopia.
• C) myringitis.
• D) presbyopia.

---

Definitions:

Myelin Sheath

A fatty layer that surrounds the axons of some nerve cells, serving to speed up electrical impulses transmitted along the nerve cells.

Adjacent Cells

Cells that are next to each other, sharing a common boundary or close proximity.

Central Nervous System

The part of the nervous system consisting of the brain and spinal cord, responsible for processing and sending out information.

Infancy

The period in human development from birth to the age of two years, characterized by rapid physical growth and cognitive development.