Head model MP1250

thoraxneckfor teaching

The calotte has been removed ~2?cm above the orbits to expose the brain and endocranial cavity. A transverse cerebral section shows grey and white matter, lateral ventricles, and choroid plexus. The right side retains skin and fascia, false-coloured to highlight facial and neck angiosomes. The left side reveals facial expression and mastication muscles, and infratemporal structures including the lingual nerve and terminal branches of the external carotid artery. The carotid sheaths are opened bilaterally, exposing the common, internal, and external carotid arteries, and vagus nerves. The sternocleidomastoid and internal jugular veins are mostly removed. On the right, the great auricular and hypoglossal nerves are visible, along with the stylohyoid ligament and supra-/infrahyoid muscles. The thyroid gland is prominent, with preserved superior and inferior thyroid vessels. Root of the Neck and Axilla: On the left, partial clavicle removal reveals the first rib, anterior scalene, and brachial plexus roots (C5–T1) forming trunks between scalene muscles. The subclavian artery passes posterior to scalenus anterior, transitioning to the axillary artery, closely related to the brachial plexus cords. The left axilla displays brachial plexus divisions and cords. The formation of the median nerve around the axillary artery is distinct. The ulnar, musculocutaneous, axillary, thoracodorsal, and long thoracic nerves are clearly identified with their courses and muscular targets. On the right, the clavicle and subclavius muscle are intact, showing the cervico-axillary canal. Pectoralis major and minor have been reflected, exposing deeper structures.