Which of the Following Events Does Not Occur During the First

question 69

Multiple Choice

Which of the following events does not occur during the first 8 weeks of development?

• A) presence of all body systems
• B) myelination of the spinal cord
• C) formation of a functional cardiovascular system
• D) beginning of ossification

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Definitions:

Demand Characteristic

Cues in an experimental environment that communicate to participants how they are expected to behave.

Control Group

A control group in scientific experiments is the group of subjects that does not receive the treatment or experimental condition and is used as a benchmark to measure the effects of the treatment.

Control Group

In experimental research, a group of subjects that does not receive the experimental treatment and is used as a benchmark to measure how the other tested subjects do.

Placebo

An inert or innocuous substance given to a patient instead of genuine medication, used in studies to evaluate the efficacy of treatments.