Health

the medulla

depression

Carl Jung categorized all people into two categories, extroverts and introverts. Extroverts are generally much more social and outgoing, where introverts generally keep much more to themselves and are calm and private.

true

Freud believed unconscious desires caused phobias.

hallucinogen

Steroids

Yoga

Rabies, chickenpox, and influenza are viral. Heart disease may or may not be caused by a virus.

Nicotine.

Cases of Gonorrhea decreased 50% from 1975 to 1997.

HPV is the most common sexually transmitted virus in the United States.

Alcohol is not a stimulant. It is a depressant.

Chlamydia is the most common bacterial sexually transmitted disease in the United States.

Not generally; you normally won't be able to tell visually that a person may have an STD.

In some cases, you might be able to recognize blisters similar to cold sores, which can be indicative of the Herpes virus, but not all herpes causes these blisters, and not all blisters are symptoms of herpes. Severe STDs may cause a visible rash or an odorous discharge, but again, these are not reliable indicators either way.

genital herpes