Squamous Cell Carcinoma of the Mouth

question 1

Multiple Choice

Squamous cell carcinoma of the mouth:

• A) Is seen more commonly in men than in women
• B) Is responsible for approximately 100,000 deaths per year in the United States
• C) Occurs with nearly equal frequency in other countries
• D) Has a yearly incidence in the United States of about 1000 new cases per year
• E) All the above

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Definitions:

Germinal Stage

The earliest phase of prenatal development, consisting of the first two weeks after conception, during which the zygote begins to divide and implant in the uterine wall.

Embryonic Stage

The period in prenatal development from fertilization until around the end of the eighth week, where significant growth and differentiation of the embryo occurs.

Teratogen

Any agent that can cause developmental malformations (birth defects) in a fetus when exposure occurs during pregnancy.

Environmental Toxins

Harmful pollutants or chemicals present in the environment that can cause adverse health effects on humans and wildlife.