What does the root word "hema" or "hemo" signify?

The root word "hema" or "hemo" is derived from the Greek word "haima," which means blood. This root is commonly used in medical terminology to refer specifically to components, conditions, and functions related to blood, such as in the terms "hemoglobin" (the protein in red blood cells that carries oxygen), "hemorrhage" (loss of blood), or "hematology" (the study of blood). Understanding this root is essential for deciphering medical language and conditions that pertain to the circulatory system, highlighting its significance in both health and disease. The other options relate to different body systems or components, emphasizing that "hema" or "hemo" is specifically associated with blood.