Describe the distribution of total blood volume in the body. (Module 19.4C) Describe the distribution of total blood volume in the body. (Module 19.4C) The volume is divided into the systemic venous system (13%), systemic arterial system (64%), in the heart (7%), pulmonary circulation (9%), and systemic capillaries (7%). The volume is divided into the systemic venous system (50%), systemic arterial system (37%), in the heart (7%), pulmonary circulation (3%), and systemic capillaries (3%). The volume is divided into the systemic venous system (75%), systemic arterial system (5%), in the heart (5%), pulmonary circulation (5%), and systemic capillaries (10%). The volume is divided into the systemic venous system (20%), systemic arterial system (20%), in the heart (20%), pulmonary circulation (20%), and systemic capillaries (20%). The volume is divided into the systemic venous system (64%), systemic arterial system (13%), in the heart (7%), pulmonary circulation (9%), and systemic capillaries (7%).