Words containing omphal/o refer to the _____________, which is also called the ____________. ad- is used as a suffix meaning toward. Build words meaning toward the head ____________ /_____________...

Words containing omphal/o refer to the _____________, which is also called the ____________.

ad- is used as a suffix meaning toward. Build words meaning toward the head ____________ /_____________ and toward the tail (lower spine) ____________ / ______________.

Human development is usually in a head-to-body (tail) direction. (The structures of the head develop first.) This is called ____________ / __________ / __________ /___________ development.