Here's why:
* Packaging and Processing: The Golgi apparatus acts like a cellular post office. It receives proteins and lipids (fats) synthesized in the endoplasmic reticulum (ER). These substances are then modified, sorted, and packaged into vesicles (tiny sacs) for transport.
* Secretion: These vesicles containing the packaged secretions are then transported to the cell membrane. The vesicles fuse with the membrane, releasing their contents outside the cell.
Think of it like this: The Golgi apparatus is the packaging and shipping department of the cell, sending out its "products" for the rest of the body to use.
