Final answer:
When palpating the anterior surface of the lateral side of the distal forearm, you are checking the pulse of the radial artery. This location near the wrist is a standard site for manually assessing an individual's pulse.
Step-by-step explanation:
If you are palpating the anterior surface of the lateral side of the distal forearm, the pulse you are checking is most likely that of the radial artery. This artery is commonly used to assess a person’s pulse because it runs close to the body surface and is easily accessible. The radial artery's location, near the wrist, makes it the standard site for manual pulse checks. The process involves locating the artery alongside the radius bone and applying gentle pressure to feel the pulse.
Other common pulse sites include the common carotid artery in the neck, brachial arteries in the upper arm, femoral arteries in the thigh, popliteal arteries behind the knees, posterior tibial arteries near the medial tarsal regions, and dorsalis pedis arteries in the feet.