Metarterioles are small blood vessels that connect arterioles to capillaries. They are important in regulating blood flow and pressure in various tissues of the body. There are various synonyms for the word "metarterioles," including precapillary arterioles, terminal arterioles, preterminal arterioles, and pericytic arterioles. These terms refer to the same type of blood vessel that plays a crucial role in maintaining the health and function of organs and tissues. Understanding the synonyms of metarterioles is essential for healthcare professionals and researchers who study blood circulation and its relationship with various diseases.