Final answer:
Angiotensin Converting Enzyme 2 (ACE2) is an enzyme involved in the conversion of angiotensin I into angiotensin II, which is crucial for blood pressure regulation and fluid balance maintenance.
Step-by-step explanation:
The Angiotensin Converting Enzyme 2 (ACE2) is primarily involved in the renin-angiotensin-aldosterone system (RAAS), which plays a crucial role in regulating blood pressure and fluid balance. ACE2 is responsible for the catalysis of angiotensin I into the active form, angiotensin II, a potent vasoconstrictor. This enzyme, produced by the lungs among other tissues, facilitates the conversion critical for maintaining blood pressure and blood volume.
Angiotensin II not only increases blood pressure by constricting blood vessels but also stimulates the release of aldosterone from the adrenal cortex, which promotes the reabsorption of sodium in the kidneys, and triggers the release of anti-diuretic hormone (ADH), leading to water retention