Final answer:
Hypovolemia refers to reduced volume in the cardiovascular system caused by various factors such as hemorrhage or excess fluid loss.
Step-by-step explanation:
A term that refers to a reduced volume in the cardiovascular system caused by hemorrhage or excess fluid loss against inadequate fluid intake is hypovolemia.
Under normal circumstances, blood volume varies little. Low blood volume, or hypovolemia, can occur due to bleeding, dehydration, vomiting, severe burns, or certain medications. It is important to note that the body has effective mechanisms to maintain blood pressure, so individuals may not show symptoms until a significant amount of blood volume is lost.
Treatment for hypovolemia typically involves intravenous fluid replacement.