Joshua Was Born with an Inherited Disease That Blocked the Development

question 136

Multiple Choice

Joshua was born with an inherited disease that blocked the development of an enzyme critical for development. Over time, Joshua has developed profound intellectual challenges. What disorder does Joshua have?

• A) Tay-Sachs disease
• B) sickle-cell anemia
• C) phenylketonuria
• D) Down syndrome

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Definitions:

Gastrin

A hormone that stimulates secretion of gastric acid by the stomach's parietal cells, aiding in digestion.

Insulin

A hormone produced by the pancreas that regulates blood sugar levels by facilitating the uptake of glucose into tissues.

Androgens

A group of hormones that play a role in male traits and reproductive activity; present in both males and females.

Refractory Period

The period immediately following an action potential during which a neuron or muscle is not responsive to further stimulation or is only responsive to stronger-than-normal stimulation.