Is there a difference in the amount of blood present between the arterial and venus "side" of the systemic circulation?
The basics of insulin and glucagon in regulating plasma glucose.
Our blood is made up of plasma (water, nutrients, gases, wastes, hormones and proteins), white blood cells (leukocytes) for immunity, platlets (cell fragments to form blood clots when we are cut) and red blood cells (erythrocytes). Red blood cells make our blood red because they contain hemoglobin which exchange gases like oxyg
How do substances (ions, proteins, ligands etc. etc.) cross from one side of the membrane to another?