One in ten Americans are now taking antidepressant drugs like Lexapro. Antidepressants are an $11 billion annual business, and Lexaproâs sales alone have been over $2.5 billion a year. Lexapro is the fifth most popular Selective Serotonin Reuptake Inhibitor (SSRIs), a family of drugs that alters brain chemicals and includes Prozac, Zoloft, Celexa and Paxil. Certain demographic groups are more likely to be taking antidepressants, particularly non-Hispanic whites.
auricle - the externally visible cartilaginous structure of the external ear. pinna, ear. ear lobe, earlobe - the fleshy pendulous part of the external human ear. external ear, outer ear - the part of the ear visible externally. tragus - a small cartilaginous flap in front of the external opening of the ear. cauliflower ear - an auricle deformed by injury; common among boxers.
physiology of hearing. The outer ear directs sound waves from the external environment to the tympanic membrane. The auricle, the visible portion of the outer ear, collects sound waves and, with the concha, the cavity at the entrance to the external auditory canal, helps to funnel sound into the canal. Because of its small size and virtual immobility, the auricle in humans is less useful in sound gathering and... Read More.