Match the descriptions to the blood vessel in the key. Answers may be used more than once. Key: a. venules b. veins c. capillaries d. arteries e. arterioles Drain blood from capillaries

Before matching the given description to the correct blood vessel, let's understand the function of each blood vessel type mentioned in the key: a. Venules: these are small blood vessels that receive blood from capillaries and transport it to the veins. b. Veins: they carry blood from different parts of the body back to the heart, typically deoxygenated blood. c. Capillaries: tiny blood vessels that form networks between arteries and veins, allowing the exchange of nutrients, oxygen, and waste products between blood and tissues. d. Arteries: these blood vessels carry blood away from the heart to different parts of the body. The blood carried by arteries is typically rich in oxygen. e. Arterioles: small arteries that branch off into the capillaries. Arterioles help regulate blood flow and blood pressure.

The given description says: "Drain blood from capillaries." In the context of the blood circulation system, this statement denotes a type of blood vessel that collects blood from capillary networks and moves it along the circulation pathway.

Now that we understand the functions of each blood vessel type, it's clear that the description "Drain blood from capillaries" correctly matches the function of: a. Venules Venules are the blood vessels responsible for receiving blood from capillaries and then transporting it to larger veins, which ultimately take that blood back to the heart.