Examlex
Which one of the following policies was included in Lyndon Johnson's Great Society?
AV Valves
Atrioventricular valves, which are heart valves located between the atria and ventricles that prevent blood from flowing backward.
Ventricular Systole
The phase of the cardiac cycle during which the ventricles contract, pumping blood out of the heart.
Phagocytosis
The process by which cells, such as immune cells, engulf and digest large particles or microorganisms.
White Blood Cells
are cells of the immune system that are involved in protecting the body against both infectious disease and foreign invaders.
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