Bone is a connective tissue which produces RCB's in the bone marrow.How do these RCB's are given out in the blood stream??

Red blood cells, white blood cells and platelets are the cellular components of the blood formed in the red bone marrow. RBCs are transported to the bloodstream as soon as they are made. Body needs a continuous supply of RBCs. They travel down the circulatory system and are suspended in plasma. Blood is a mixture of the plasma and RBCs.