A physician who diagnoses and treats diseases of the skin, hair, and nails is a(n) 

The reason that the knee is the most commonly injured joint in the body is because its articulating surfaces

a. lack congruency, making it a highly unstable joint that functions under extreme compression and torsion stresses. b. are highly congruent, making it a highly stable joint that functions under extreme compression and torsion stresses. c. lack congruency, making it a highly mobile joint that functions under extreme tensional and shearing stresses. d. have a lot of cartilage, making it a highly cushioned joint that functions under extreme compression and torsion stresses.

Which of the following factors was NOT considered by WHO when ranking and comparing nations' health care systems in 2000?

A. Health B. Responsiveness C. Health Care Expenditure per Capita D. Number of uninsured