The Molecules That Are "Switched On" After Fertilization and Begin

question 44

Multiple Choice

The molecules that are "switched on" after fertilization and begin sculpting arms,fingers,vertabrae,ribs,a brain,and other body parts are called

• A)teratogens.
• B)hydrogens.
• C)cephalocods.
• D)morphogens.

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Definitions:

Transcranial Magnetic Stimulation

is a noninvasive procedure that uses magnetic fields to stimulate nerve cells in the brain to improve symptoms of depression and other conditions.

Magnetic Resonance Imaging

A diagnostic imaging technique that uses a powerful magnetic field and radio waves to generate detailed images of the organs and tissues within the body.

Computerized Tomography

A diagnostic imaging technique that uses computer-processed combinations of many X-ray measurements taken from different angles to produce tomographic images.

FMRI

Functional Magnetic Resonance Imaging, a technique for measuring and mapping brain activity through changes in blood flow.