Unexpected means it was something you did not "expect" to happen such as a car crashing into you which means this is wrong.
Unfair is any injury.
Unnecessary means it was never needed and could have been prevented/not done therefore unnecessary is the best term.
True, It Helps Protect The Workers From Getting Germs Onto Them And Then Onto The Patient (Which Is Why Healthcare Workers Wear New Equipment, Scrubs Etc.)
Basically the main function of both of these has to do with blood. Arteries are important because they move blood away from the heart. Veins do the opposite of arteries and actually return blood back to the heart! They are both very important for the body.
It would be considered verbal abuse, as i have dealt with this for a significant portion of my life. Hope this helps! And as the comment below suggests, emotional abuse because the child would think they are worthless and would hate themselves and thus blame everything on them, leading to depression.
