MATLAB: Divide the matrix to blocks

digital image processingimageimage processingmatrices

I need to divide matrix to blocks have size (1*3) how can write (for loop) to get blocks as the following example
matrix = [1 4 3 5 7 1;4 2 1 5 4 7;8 0 1 4 5 6] I need first block = [1 4 3] second block = [5 7 1] third block = [4 2 1]
and so on