Final answer:
The statement is True—there are three principal ways toxins can enter the body: through inhalation, absorption, and ingestion, affecting different parts of the body and leading to various health concerns. The correct option is True.
Step-by-step explanation:
The statement that there are three principal ways a toxin can enter the body—by inhalation, absorption, and ingestion—is True. Inhalation refers to breathing in toxic substances through the nose or mouth, allowing them to enter the lungs and move through the bloodstream. Absorption involves chemicals penetrating the skin or mucous membranes, while ingestion occurs when toxins are consumed and enter the digestive tract. These routes of exposure highlight the need for barriers to prevent chemicals from entering sensitive areas of the body and causing health issues.
- Inhalation can lead to respiratory issues or systemic effects once the toxin moves through the bloodstream.
- Absorption through the skin or mucous membranes could potentially cause localized or systemic effects.
- Ingestion predominantly affects the digestive system but can also have a systemic impact after the toxin is absorbed into the bloodstream.