More Than 50 Percent of U.S. Children

question 78

Multiple Choice

More than 50 percent of U.S. children

• A) have untreated tooth decay.
• B) suffer from malocclusion.
• C) have at least some tooth decay.
• D) need braces by age 10.

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Definitions:

Intercalated Disc

Specialized connections between cardiac muscle cells containing gap junctions and desmosomes, facilitating unified contractions of the cardiac tissue.

Cardiac Muscle Fiber

A type of involuntary striated muscle found in the walls of the heart, enabling it to contract and pump blood throughout the body.

Striation

A series of ridges, furrows or linear marks, often found in muscle tissues or rocks.

Ligamentum Arteriosum

A small ligament that is a remnant of the ductus arteriosus, connecting the pulmonary artery to the descending aorta in the fetal circulation system.