Down Syndrome Is a Trisomy That Involves Chromosome Number

question 90

Multiple Choice

Down syndrome is a trisomy that involves chromosome number

• A) 3.
• B) 5.
• C) 15.
• D) 19.
• E) 21.

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Definitions:

Nervous System

A complex network of nerves and cells that transmit signals between different parts of the body.

Carcinoma

Carcinoma is a type of cancer that begins in the skin or in tissues that line or cover internal organs.

Myelin Sheath

A fatty layer that surrounds the axon of some neurons, increasing the speed at which electrical impulses propagate along the nerve cell.

Acetylcholine

A neurotransmitter in both the central and peripheral nervous systems that plays an important role in muscle contraction and sensory perception.