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Cat Nerves Brachial Plexus (in axilla) Brachial Plexus (in axilla) Phrenic Nerves (to diaphragm) Phrenic Nerves (to diaphragm) Vagus Nerves (CN X) Vegas Nerve (attached to carotid arteries and travels next to heart, down to abdomen) Sympathetic trunk (runs next to vertebral column) Sciatic Nerve Cat Sciatic Nerve Sciatic nerve (deep to biceps femoris) Sciatic nerve (deep to biceps femoris) Human Nerves Brachial plexus Radial (posterior) Musculocutaneous (anterior) Ulnar Median Radial Femoral (anterior) Sciatic (posterior) Fibular (lateral) Tibial (posterior leg and bottom of foot) Sciatic nerve (in gluteal region) Phrenic nerve (to the diaphragm) Phrenic nerve (to the diaphragm) Brachial plexus (in axilla) Femoral vein, artery, nerve (in groin) Femoral vein, artery, nerve (in groin) Lateral femoral cutaneous nerve Celiac ganglia • • The celiac ganglia are two large irregularly shaped masses of nerve tissue in the upper abdomen. Part of the sympathetic subdivision of the autonomic nervous system (ANS), the two celiac ganglia are the largest ganglia in the ANS, and they innervate most of the digestive tract. They have the appearance of lymph glands and are on either side of the midline in front of the diaphragm, close to the adrenal glands. The ganglion on the right side is behind the inferior vena cava. Celiac artery Celiac ganglion Stomach Superior mesenteric artery