Final answer:
The hub is the part of the venipuncture needle that attaches to the syringe or Vacutainer adapter, ensuring a secure connection for blood collection or injections.
Step-by-step explanation:
The hub is the part of the venipuncture needle that fits into the syringe or Vacutainer adapter. The hub is usually made of plastic or metal and has a specific design that allows it to securely attach to the syringe or adapter. It acts as a connection point between the needle and the collection device.
The part of the venipuncture needle that fits into the syringe or Vacutainer adapter is known as the hub. This component is crucial for ensuring a secure connection between the needle and the collection device, allowing for safe and effective drawing of blood or injection of substances.