The left atrium and ventricle of the heart are the primary parts of the systemic circuit.
The left ventricle pumps oxygenated blood from the arteries to the capillaries in the body's tissues, which is known as systemic circulation.
It transports oxygen and nutrients to the cells while also collecting carbon dioxide and trash.
The circuit of vessels that supply oxygenated blood to the tissues and deoxygenated blood to the heart.
Thus, the correct option is c. the left atrium and ventricle of the heart.
Learn more about systemic circuit
https://brainly.com/question/10729774
