The Global Population of ____ Is Projected to Triple Between

question 3

Multiple Choice

The global population of ____ is projected to triple between 2016 and 2050.

• A) people who are 65 and older
• B) women
• C) men
• D) men who are 15 to 45
• E) people who are 10 and younger

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Definitions:

Pulmonic Valve

A heart valve located between the right ventricle and the pulmonary artery, regulating blood flow to the lungs.

Aortic Valve

A valve in the human heart between the left ventricle and the aorta that prevents blood from flowing back into the heart chamber after it has been ejected.

Cardiac Cycle

The sequence of events in the heart from the beginning of one heartbeat to the beginning of the next, encompassing systole and diastole phases.

Pericardium

The fibrous sac that encloses the heart, providing it with protection and a fixed position within the thorax.