Final answer:
The antecubital fossa contains three main vessels: the cephalic vein, basilic vein, and the median cubital vein, which is commonly used for drawing blood.
Step-by-step explanation:
The three vessels of the antecubital fossa are the cephalic vein, the basilic vein, and the median cubital vein. The median cubital vein is a superficial vessel located in the antecubital region that connects the cephalic vein to the basilic vein, forming a "V" shape and serving as a common site for venous blood draws. The cepahlic vein is a superficial vein of the arm that arises from the median antebrachial vein, intersects with the median cubital vein, parallels the ulnar vein, and continues into the upper arm. Lastly, the basilic vein travels medially and superficially through the arm, eventually connecting to the axillary vein.
The cephalic vein is a superficial vein located in the upper arm that eventually leads to the axillary vein. The basilic vein continues through the arm medially and superficially to the axillary vein.