Max Maxwell was seen in the office today for left cochlear otosclerosis and recurrent cholesteatoma of a postmastoidectomy cavity of the right ear. What are the correct codes?

Which of the following substances is NOT a neurotransmitter commonly implicated in mental disorders?

a. GABA b. Serotonin c. Dopamine d. Progesterone

What factors affect the combustion-supporting properties of O2? 1. Concentration 2. Partial pressure 3. Humidity

a. 1 only b. 2 only c. 1 and 2 only d. 1, 2, and 3