Which of the following processes is directly affected by the cardiovascular system?
hair growth
muscle strength
healing of cuts
hormone release

Healing of cuts is the process that is directly affected by the cardiovascular system. This is because when you cut yourself, your heart directs a portion of your blood to your wound, and at one point, there's going to be a scab over your wound while it heals itself. Although the cardiovascular system indirectly affects all of these processes, only the healing of cuts is directly impacted by it.