Which Statement Applies to the Effects of Exposure to Harmful

question 17

Multiple Choice

Which statement applies to the effects of exposure to harmful substances during embryonic life?
1) During the first two weeks, exposure will usually cause death of the embryo.
2) Organs or body structures may be altered by exposure during the first two months.
3) The effects of exposure depend on the stage of development at the time of exposure.
4) Metabolic abnormalities usually follow exposure to teratogens.

• A)1, 3
• B)2, 4
• C)1, 2, 3
• D)2, 3, 4

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Definitions:

Neurons

Nerve cells that transmit information through electrical and chemical signals, serving as the basic working unit of the brain and nervous system.

Neonate

A newborn baby, especially during the first few weeks of life.

Anaerobic Metabolism

The process of generating energy without the use of oxygen, typically producing lactic acid, used by muscles in short bursts of activity.

Peripheral Resistance

The resistance to blood flow in the peripheral circulatory system, primarily determined by the diameter and elasticity of blood vessels.