A wound in which the epidermis is scraped away with minimal bleeding, such as commonly occurs when a child falls on his knees on a sidewalk, is called a(n):
A) abrasion. B) avulsion. C) evisceration. D) contusion.
Question 2
Which one of the following is the primary stimulus to breathe in normal human beings?
A) Level of CO2 in the body
B) Amount of oxygen required by the body
C) Level of oxygen in the body
D) Amount of nitrogen in air