Nervous System of an Obese Male, Gross Anatomy

Description

Shown on an obese adult male standing in anatomical position, the brain and spinal cord form the central axis, with segmental spinal nerves exiting the vertebral column and distributing as peripheral nerves into the trunk and limbs. Cervical nerves spread into the scalp and face and descend into the neck, while the brachial plexus forms in the lower cervical region and continues into the arm as the musculocutaneous, median, ulnar, and radial nerves along the anterior and posterior compartments. Inferiorly, lumbosacral roots converge into the lumbar and sacral plexuses, giving rise to the femoral nerve on the anterior thigh and the sciatic nerve tracking posteriorly before dividing into tibial and common fibular components in the leg. Yellow neural tracings fill the torso, upper limbs, and lower limbs. Obesity changes the clinical story of peripheral nerves because increased soft tissue can shift palpation landmarks and contribute to entrapment syndromes and metabolic neuropathy patterns. Distal symmetric polyneuropathy associated with type 2 diabetes often presents with stocking distribution sensory loss in the feet before the hands, so a full-body mapping view helps teach length-dependent vulnerability. For procedural planning, this figure also supports discussions of where to expect nerve course relative to surface anatomy during regional anesthesia, such as femoral or sciatic blocks, when ultrasound windows and needle depth change with adiposity. Use this artwork in gross anatomy and neuroanatomy teaching to connect spinal cord segments to peripheral nerve territories, or in endocrinology and pain medicine materials addressing diabetic neuropathy and compression neuropathies (carpal tunnel, meralgia paresthetica, tarsal tunnel) in obese patients. It also fits patient-education handouts and textbook plates that need a whole-body peripheral nervous system overview rather than a single-limb dissection. Anatomical accuracy verified by SciePro's Medical Advisory Board.