Which of the following is not directly related to impulse extinction caused by local anesthetics drugs?

What influences the ease in which a skin incision is made?

a. Type of knife handle b. The type of surgery c. Toughness of skin or scar tissue d. Excess tension on the skin or wound

Physical conditions that cause hypertension include:?

A) ?thyroid dysfunction B) atherosclerosis C) arteriosclerosis D) all of the above