Pattern of Sensory Innervation

Description

Color-segmented cutaneous fields map the sensory innervation of the female head, neck, shoulder, anterior chest, and upper limb on a torso-up 3D model, with the right half of the body colored and the contralateral side left unmarked for comparison. Over the face and scalp, regions correspond to trigeminal nerve distributions, with ophthalmic (V1) placed superiorly toward the forehead, maxillary (V2) across the midface, and mandibular (V3) along the lower face and jaw. Inferior to the mandible, the cervical plexus territories occupy the anterolateral neck and supraclavicular area, then transitions on the thorax and arm reflect the intercostobrachial nerve (T2) near the axilla and the patchwork of brachial plexus terminal cutaneous branches along the shoulder, arm, and forearm. Boundaries. Matter. Sensory maps like this earn their keep when symptoms do not follow a single peripheral nerve. A burning band over the anterolateral chest and into the axilla, for example, points you toward T2 involvement (including the intercostobrachial nerve) and can distinguish shingles or thoracic radiculopathy from ulnar or medial antebrachial cutaneous neuropathy. The facial segmentation also supports clinical localization, since loss of corneal sensation tracks with V1, while numbness over the cheek and upper lip tracks with V2, patterns that guide workup after facial trauma or dental procedures. Use this asset in dermatology and neuroanatomy teaching to contrast peripheral cutaneous nerve fields with dermatomes, and in exam-prep materials covering sensory testing, trigeminal neuralgia distributions, and cervical plexus blocks. It also fits patient-facing education in neurology or pain clinics when explaining why paresthesia crosses joints and does not respect a glove-and-stocking pattern. Anatomical accuracy verified by SciePro's Medical Advisory Board.