| Endangerment Site (location) | Structure Involved |
| Abdomen (upper area under ribs) | right side: liver and gall bladder
left side: spleen
deep center: aorta |
| Anterior Triangle of neck (bordered by: mandible, SCM, and Trachea) | Carotid Artery; Int. Jugular Vein; Vagus Nerve and Lymph Nodes |
| Axilla (armpit) | Axillary, Median, Ulnar & Musculocutaneous Nerves; Axillary Artery & Lymph Nodes |
| Cubital area of Elbow (anterior bend of elbow) | Median Nerve; Radial & Ulnar arteries; Median Cubital Vein |
| Femoral Triangle (bordered by: Sartorius, Adductor Longus & Inguinal Ligament) | Femoral Nerve,Artery, and Vein;
Great Saphenous Vein;
Lymph Nodes |
| Inferior to Ear (notch posterior to ramus of mandible) | External carotid artery;
styloid process;
facial nerve |
| Medial Brachium (Upper, inner arm. between biceps and triceps) | Ulnar, Median, & Musculocutaneous Nerves; Brachial Artery; Basilic Vein & Lymph Nodes |
| Popliteal Fossa (Posterior knee Bordered by Gastoc/Hamstrings) | Tibial Nerve; Popliteal Artery & Vein |
| Posterior Triangle of Neck (bordered by SCM, Trapezius, Clavicle) | Brachial Plexus; Subclavian Artery; Brachiocephelic & External Jugular Veins; Lymph Nodes |
| Ulnar Notch of Elbow (Funny Bone) | Ulnar Nerve |
| Upper Lumbar Area (inferior to ribs/lateral to spine) | Kidneys (avoid percussion) |
