The Iris Is a Doughnut-Shaped Ring of Muscle That Adjusts

question 226

Multiple Choice

The iris is a doughnut-shaped ring of muscle that adjusts the size of the

• A) cochlea.
• B) cornea.
• C) pupil.
• D) lens.

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Definitions:

Television Ad Campaigns

Advertising initiatives executed through TV channels meant to promote products, services, or ideas to a broad audience.

Electroconvulsive Therapy

A psychiatric treatment in which electric currents are passed through the brain, intentionally triggering a brief seizure to treat certain mental disorders.

Psychosurgery

A medical procedure that involves operating on the brain to treat mental illness or abnormal behavior, now rare due to advancements in psychiatric medication and therapies.

Trephining

Trephining, or trepanation, is an ancient surgical intervention that involves drilling or scraping a hole into the human skull, historically performed for medical and ritualistic purposes.