Final answer:
The bevel is the name of the slant at the open end of a needle used for venipuncture, typically targeting the median cubital vein for blood draws.
Step-by-step explanation:
The name of the slant at the open end of a needle used for venipuncture is called the bevel.
The bevel of the needle is designed to create a small, clean incision in the vein wall for a smoother entry during a venipuncture procedure. When performing venipuncture, healthcare professionals often target the median cubital vein, a superficial vessel located in the antecubital region that connects the cephalic vein to the basilic vein in a 'V' shape.
This vein is a popular site for blood draws because it is usually well anchored and can provide a good blood flow, which makes the procedure easier and more comfortable for the patient. During the procedure, the bevel should be facing upward when the needle is inserted to minimize discomfort and the risk of damaging the vessel.