Question 73

Hemolysis is caused by excessive shaking of a tube.

Excessive shaking of a tube can lead to hemolysis, which is the breakdown of red blood cells. This process can occur when the cells are subjected to mechanical stress, resulting in the release of hemoglobin into the plasma.

A) Hemophilia

Hemophilia is a genetic disorder that affects the blood's ability to clot, leading to excessive bleeding. It is not caused by the shaking of a tube but rather by deficiencies in specific clotting factors, making this option incorrect.

B) Hemoconcentration

Hemoconcentration refers to an increase in the concentration of cells and solids in the blood due to a decrease in plasma volume. This condition is typically caused by dehydration or fluid loss, rather than the mechanical action of shaking a tube, thus making it an incorrect choice.

C) Hemolysis

Hemolysis is directly related to excessive shaking of a tube, as the mechanical agitation can damage red blood cells, leading to their rupture. This option accurately describes the effect of excessive shaking, confirming it as the correct answer.

D) Hemostasis

Hemostasis is the process that prevents and stops bleeding, involving the clotting of blood. It is not related to the shaking of a tube and is a physiological response to injury, making this option incorrect.

Conclusion

Hemolysis is the only option that directly correlates with the excessive shaking of a tube, as it involves the mechanical disruption of red blood cells. In contrast, hemophilia, hemoconcentration, and hemostasis are unrelated to this type of physical manipulation, thus reinforcing the correctness of option C.