Which term describes a shortage of red blood cells or hemoglobin in the blood, resulting in paleness and weakness?

• A. Anemia
• B. Atrophy
• C. Bacteremia
• D. Bronchitis

Answer: (A)

Anemia describes a condition where the blood has too few red blood cells or not enough hemoglobin, which lowers the blood’s ability to carry oxygen to the body's tissues. When oxygen delivery drops, you often look pale and feel weak or tired because your muscles and organs don’t get the oxygen they need to function well. Red blood cells rely on hemoglobin to bind and release oxygen, so reductions in either cell count or hemoglobin lead to less oxygen reaching tissues, producing those symptoms. Other terms refer to different issues: atrophy is tissue wasting away, bacteremia is the presence of bacteria in the bloodstream, and bronchitis is inflammation of the airways in the lungs.