Most of the Body Structures and Internal Organs Develop During

question 61

Multiple Choice

Most of the body structures and internal organs develop during the period of the

• A) embryo.
• B) fetus.
• C) zygote.
• D) ectoderm.

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Definitions:

ECG

A test that records the electrical activity of the heart to detect heart conditions.

ECGs

Electrocardiograms, a medical test that measures the electrical activity of the heart to identify abnormalities.

Atrioventricular Valves

Heart valves located between the atria and ventricles, enabling blood flow from the atria to the ventricles while preventing backflow.

Semilunar Valves

Valves located at the exit of both the left and right ventricles of the heart, which prevent backflow of blood into the ventricles.