Action of Renin in Blood Pressure Regulation

In human physiology, the regulation of blood pressure is crucial for maintaining homeostasis and ensuring adequate perfusion of tissues and organs. Blood pressure is affected by various factors, including cardiac output and vascular resistance. One key mechanism that influences blood pressure is the renin-angiotensin-aldosterone system (RAAS). In this system, renal juxtaglomerular cells play a pivotal role in responding to low blood pressure. Which of the following statements correctly describes the immediate action of renin released from the kidneys?