A Medical Journal Published the Results of an Experiment on Insomnia

question 81

Multiple Choice

A medical journal published the results of an experiment on insomnia. The experiment investigated the effectsof a controversial new therapy for insomnia. Researchers measured the insomnia levels of 90 adult women whosuffer moderate conditions of the disorder. After the therapy, the researchers again measured the womenʹsinsomnia levels. The differences between the the pre- and post-therapy insomnia levels were reported.Identify the experimental units.

• A) the 90 adult women who suffer from insomnia
• B) the differences between the pre- and post-therapy insomnia levels
• C) the disorder (insomnia or no insomnia)
• D) the therapy time period (pre or post)

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Definitions:

RANKL

A signaling molecule that plays an essential role in bone remodeling by promoting the formation, function, and survival of osteoclasts, which are cells responsible for bone resorption.

Osteoblasts

Cells responsible for bone formation, involved in the synthesis and mineralization of bone during both initial bone formation and later bone remodeling.

Osteoclasts

Bone-resorbing cells that play a crucial role in bone remodeling and calcium homeostasis within the body.

Langerhans Cells

Specialized dendritic cells located in the epidermis that play a key role in the skin's immune response.