Trunk 3: Retroperitoneal & pelvic viscera

Torso, including the neck and proximal parts of the upper and lower limbs.
Most veins removed (except the inferior vena cava and iliac veins) to provide clear views of underlying structures.

• Transverse section through the superior neck (immediately inferior to the skull) revealing the spinal cord with meningeal coverings in the vertebral canal and the vertebral arteries in the foramen transversarium.
• Viscera and vasculature (most) of the neck removed.
• Deep muscles of the anterior and lateral neck, including longus colli, longus capitis and scalenus muscles.
• Subclavian artery and its branches.
• Structure and alignment of the superior thoracic aperture.
• Regional nerves of the neck, including the cervical plexus (part), brachial plexus, spinal accessory nerve (CN XI) and phrenic nerve.

• Anterolateral thoracoabdominal wall opened via a median sagittal cut and opened (reflected) on both sides.
• Various muscles of the thorax and hypaxial muscles of the back.
• Structure of the anterolateral thoracic and abdominal walls, including the intercostal spaces, rectus sheath and inguinal canal.
• Arrangement and tissue layer location of epigastric vessels and intercostal neurovascular bundles.
• Various posterior and lateral cutaneous nerves of the trunk.
• Position, contents (male or female) and structure of the inguinal canal.
• Most viscera of the thorax and abdomen, major systemic vasculature, and parts of the diaphragm removed to reveal the posterior wall of the thorax and various views of the retroperitoneal space and its contents.
• Viscera and vasculature of the retroperitoneal space, including the duodenum, pancreas, kidneys, abdominal aorta and its branches, and inferior vena cava and its tributaries.
• Posterior part of costodiaphragmatic recess, with costal and vertebral attachment of the diaphragm.
• Sympathetic trunk, sympathetic ganglia, and various thoracic splanchnic nerves.
• Position, content, and structure of the inguinal canal.
• Branches (some) of the coeliac trunk, superior mesenteric artery, and inferior mesenteric artery.
• Structure of the posterior wall (boundary) of the abdomen.
• Lumbar plexus, its relationship with psoas major, and the course of its branches.
• Peritoneum removed (expect the broad ligament of uterus in the female) to reveal an antero-superior view of the viscera and arteries of the pelvis.
• Structures forming the umbilical ligaments (folds).
• Internal and external genital system anatomy (male or female). Male also includes the spermatic fasciae and course of the ductus deferens. Female also includes the round ligament and the broad ligament (part) of the uterus.
• Structure and neurovascular supply of the pelvic floor and external anal sphincter (inferior/perineal view).
• Ischioanal fossae, perineal pouches, and perineal region muscles including the transverse perineal, ischiocavernosus and bulbospongiosus muscles.

• Layered arrangement of hypaxial of the back muscles shown across the left and right sides.
• Position and attachments of the thoracolumbar fascia.
• Epaxial muscles of the back including erector spinae and spinotransversales muscles.
• Key muscular triangles of the back, including the auscultation triangle, superior lumbar triangle, and inferior lumbar triangle.

• Muscles of the shoulder and arm (to its midpoint), shown mainly in the anatomical position.
• Veins removed to provide clear views of underlying structures.
• Various muscles are lifted or reflected to reveal underlying structures and regions.
• Right and left upper limbs shown in different positions to aid visualisation of their movement and the associated muscles.
• Scapula with related muscles shown in layers, including the rotator cuff muscles, deltoid, and various hypaxial muscles of the back.
• Boundaries (some) and neurovascular contents of the axilla, with different views shown across the left and right sides.
• Course and relations of key neurovascular structures, including the musculocutaneous, ulnar, median, and radial nerves, and the brachial artery and its branches.
• Boundaries and contents of key regions, including the triangular space and triangular interval.

• Muscles of the gluteal region and thigh (to its midpoint), shown mainly in the anatomical position.
• Veins removed to provide clear views of underlying structures.
• Various muscles are lifted or reflected to reveal underlying structures and regions.
• Gluteus maximus in the anatomical position (one side) and reflected (opposite side) to reveal underlying neurovasculature, muscles and the sacrotuberous ligament.
• Boundaries and content of the femoral triangle and subsartorial canal.
• Subsartorial canal opened (sartorius removed) to reveal its contents and the position and contents of the adductor hiatus.
• Course and relations of the key neurovascular structures, including the femoral, obturator and sciatic nerves, and the femoral artery and vein (one side) and their branches/tributaries.