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# External Body Landmarks ## Cervical area * C1 * C2/ C3 * C3/ C4 * C5 * C7/ T1 * Mastoid tip * Gonion (angle of mandible) * Hyoid bone * Thyroid cartilage * Vertebra prominens ## Thoracic area * T1 * T2/ T3 * T4/ T5 * T7 * T9/T10 * 2 in (...

# External Body Landmarks ## Cervical area * C1 * C2/ C3 * C3/ C4 * C5 * C7/ T1 * Mastoid tip * Gonion (angle of mandible) * Hyoid bone * Thyroid cartilage * Vertebra prominens ## Thoracic area * T1 * T2/ T3 * T4/ T5 * T7 * T9/T10 * 2 in (5 cm) above level of jugular notch * The jugular notch * The sternal angle * The inferior angles of scapulae * The xiphoid process ## Lumbar area * L1/ L2/ L3 * Navel * L4/ L5 * The Inferior Costal margin * Approximately L3 (not accurate because of body habitus) * Superior aspect of crests ## Sacrum and pelvic area * L5/ S1 * S1/ S2 * Coccyx * At the Posterior Superior Iliac Spine (PSIS) - dimples in the back * At the Anterior Superior Iliac Spines (ASIS) * At the upper border of the pubic symphysis & most prominent portion of the greater trochanter