Norby,an 18-Year-Old First-Year University Student,has Missed Almost All His Classes

question 150

Multiple Choice

Norby,an 18-year-old first-year university student,has missed almost all his classes during the past month.He spends most of his time in his bedroom,frequently not even bothering to get dressed or eat meals.He thinks his whole life has been a failure and blames himself for being a social misfit.Norby is most likely suffering from

• A) major depressive disorder.
• B) mania.
• C) disruptive mood dysregulation disorder.
• D) bipolar disorder

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Definitions:

Morula

A zygote that has undergone cleavage and results in a ball of cells.

Blastocyst

A morula that travels down the uterine tube to the uterus and is invaded with fluid. It then implants into the wall of the uterus.

Cleavage

The process by which a single cell divides into two or more daughter cells, often referred to in cellular biology and embryology.

Yolk Sac

The sac that holds the materials for the nutrition of the embryo.