Carbon Dioxide and wastes are transferred for oxygen. The  blood then travels to the left atrium by the pulmonary artery and  then to the left ventricle. The blood leaves the heart by the aorta  to the other parts of the body.. The circulatory system is the organ system that carries substances around our body. There is no such thing as a circulary system.
Overview [edit]. The purpose of the ribosome is to translate messenger RNA (mRNA) to proteins with the aid of tRNA. In eukaryotes, ribosomes can commonly be found in the cytosol of a cell, the endoplasmic reticulum or mRNA, as well as the matrix of the mitochondria.
Ribosome. The Virtual Cell. Ribosomes are the protein assemblers of a eukaryotic cell. They are typically composed of two subunits: a large subunit and a small subunit. These two units join together to produce proteins in a process called translation.Ribosomes may be suspended in the cytosol (fluid component of the cytoplasm) of the cell or bound to the endoplasmic reticulum.Free ribosomes usually make proteins that will function in the cytosol, while bound ribosomes usually make proteins that are exported outside of the cell or included in the cell's membranes.ibosomes may be suspended in the cytosol (fluid component of the cytoplasm) of the cell or bound to the endoplasmic reticulum. Free ribosomes usually make proteins that will function in the cytosol, while bound ribosomes usually make proteins that are exported outside of the cell or included in the cell's membranes.