Final answer:
The organs connected to the ST (systemic circulation) are the heart, lungs, liver, and kidneys.
Step-by-step explanation:
The subject of this question is Biology.
The ST in the question refers to the systemic circulation, which is the flow of blood away from the heart to various organs in the body and then back to the heart. The organs that are connected to the systemic circulation include the heart, lungs, liver, and kidneys.
For example, when blood is pumped out of the heart, it travels to the lungs to be oxygenated. From there, it is delivered to other organs such as the liver and kidneys, which play important roles in filtering toxins from the blood and maintaining the body's chemical balance.