Question

1. electrocardiogram (hint: electro/cardio/gram): r r s meaning: ______

Explanation:

To determine the meaning of "electrocardiogram", we analyze its word parts. "Electro-" relates to electricity, "cardio-" pertains to the heart, and "-gram" refers to a record or graph. Combining these, an electrocardiogram is a record of the electrical activity of the heart, typically used to diagnose heart conditions.

Answer:

A record of the electrical activity of the heart, used to diagnose heart - related conditions.