The Golgi apparatus secretes proteins around the cell.
The Golgi apparatus is part of endomembrane system of the cell with the role in packaging proteins into vesicles and send it to their destination. The Golgi apparatus receives proteins from the rough endoplasmic reticulum, then modifies some of them, sorts, and packs them. There are three possible pathways for the proteins from Golgi apparatus:
Lysosomal pathway: Destination of the protein is within the cell, to organelles called lysosomes.
Exocytotic: Destination of the vesicles is the plasma membrane where they fuse and release their contents into the extracellular space (constitutive secretion).
Secretory: Destination for the vesicles with proteins is outside of the cell (extracellular) and they release their contents as a response to a signal (regulated secretion).