Simplify the following text for a Grade 8 native English-speaking person.
Original: In anatomy , the scapula , omo ( Medical Latin ) , or shoulder blade , is the bone that connects the humerus ( upper arm bone ) with the clavicle ( collar bone ) .
Simplified: The scapula is the shoulder blade or pectoral girdle bone in tetrapods . It connects to the humerus and the clavicle .