The dentist is clever

After the dentist took out my wisdom tooth she told me to sit still for a while.As I was doing that the nurse dangled something in front of me.I was wondering is if she wanted to give it to me. so put out my hand.
She said,It’s your tooth.Well it was covered in blood and had roots like  mature carrot.They were over the moon because they knew [ I did not]’ that it was going to be difficult.
My roots are twice as long as the average so some folk must have short roots.The roots contain a nerve  so my nerves are huge.Does that make me more sensitive than average?I’ve never heard it mentioned.But it may explain why  human beings vary so much.I can’t watch violent films or films about hospitals especially late at night.My friend can watch anything.Well, maybe  not ANYTHING
I am intrigued by these physical aspects.Some folk have very narrow arteries.I never thought much about this