Each middle ear consist of three tiny bones ____,___ and ____ collectively called____

Each middle ear consist of three tiny bones ____,___ and ____ collectively called____
Each middle ear consist of three tiny bones ____,___ and ____ collectively called____
Each middle ear consist of three tiny bones ____,___ and ____ collectively called____
Each middle ear consist of three tiny bones ____,___ and ____ collectively called____

called____