Of What Is the Normal Umbilical Cord Comprised

question 2

Multiple Choice

Of what is the normal umbilical cord comprised?

• A) 1 artery carrying blood to the fetus and 1 vein carrying blood away from the fetus
• B) 1 artery carrying blood to the fetus and 2 veins carrying blood away from the fetus
• C) 2 arteries carrying blood away from the fetus and 1 vein carrying blood to the fetus
• D) 2 arteries carrying blood to the fetus and 2 veins carrying blood away from the fetus

---

Definitions:

Placebo Study

Research that investigates the effect of a treatment by comparing the response of subjects receiving an inactive substance or sham treatment to those receiving the actual treatment.

Sugar Pill

A placebo used in clinical trials to test the efficacy of medications, which has no therapeutic effect but can influence participants' perceptions of their symptoms.

Antidepressant Medication

A class of drugs designed to improve symptoms of depression by altering chemical imbalances of neurotransmitters in the brain.

Correlational Method

A research strategy that examines whether and how variables are related, without implying a cause-and-effect relationship.