The prefix ECTO- means which of the following?

Study for the AMCI Introduction to Medical Terminology Test. Prepare with multiple choice questions, flashcards, hints, and explanations. Enhance your knowledge and get ready for your exam!

Multiple Choice

The prefix ECTO- means which of the following?

Explanation:
Ecto- denotes outside or external. It’s used for structures or locations on the outer side, such as the ectoderm, the outermost layer of an embryo, or an ectoparasite, which lives on the outside of its host. The other options describe inside (endo- or intra-) or don’t apply to this prefix, so the meaning that best fits ecto- is outside.

Ecto- denotes outside or external. It’s used for structures or locations on the outer side, such as the ectoderm, the outermost layer of an embryo, or an ectoparasite, which lives on the outside of its host. The other options describe inside (endo- or intra-) or don’t apply to this prefix, so the meaning that best fits ecto- is outside.

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