Endo- means which?

Endo- means which?

• A. Around
• B. Through
• C. Inside
• D. Between

Answer: (C)

Endo- is a Greek-origin prefix that signals location inside or within. It attaches to terms to show something is internal. For example, endoscopy means examining inside the body, endocardium is the inner lining of the heart, and endocrine refers to internal secretion by glands. So endo- means Inside. The other directions—around, through, or between—are expressed with different prefixes (peri- or circum- for around, trans- or per- for through, inter- for between), which is why the inside meaning fits best here.

Endo- is a Greek-origin prefix that signals location inside or within. It attaches to terms to show something is internal. For example, endoscopy means examining inside the body, endocardium is the inner lining of the heart, and endocrine refers to internal secretion by glands. So endo- means Inside. The other directions—around, through, or between—are expressed with different prefixes (peri- or circum- for around, trans- or per- for through, inter- for between), which is why the inside meaning fits best here.