Abdomen

Minor Calyx of Kidney

Minor Calyx of Kidney The structure indicated is the minor calyx of the kidney. The kidney consists of an outer cortex and an inner medulla. The cortex projects into the kidney dividing the medulla into triangular shaped renal pyramids, whose apices are surrounded by a minor calyx (calices = plural). The minor calices join to form a major calyx, which in turn unite to form the renal pelvis which exit the kidney to form the ureters. The calyx system of the kidney serves to drain urine. The smooth muscle walls of the calices are capable of peristalsis, which helps to …

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Minor Calyx

Pancreatic Duct

Pancreatic Duct The structure indicated is the pancreatic duct (duct of Wirsung) of the pancreas. The pancreas is an organ which lies posteriorly to the stomach and extends from the duodenum to the spleen. The pancreatic duct extends from the tail of the pancreas through the body of the pancreas into the head of the pancreas where it joins the common bile duct to form the hepatopancreatic ampulla, also known as the ampulla of Vater, which empties into the descending duodenum at the major duodenal papilla. In addition to the main pancreatic duct, there is also an accessory pancreatic duct …

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Pancreatic Duct

External Abdominal Oblique Muscle

External Abdominal Oblique Muscle The muscle indicated is the external oblique muscle of the abdomen. The external oblique muscle is the most superficial lateral muscle of the anterior abdominal wall. The three muscles which make up the lateral part of the anterior wall of the abdomen from superficial to deep are the: External oblique Internal oblique Transversus abdominis Origin: ribs 5-12 Insertion: Iliac crest, pubic tubercle, linea alba Innervation: thoracoabdominal nerve and subcostal nerve Action: Flexion and rotation of the vertebral column – brings about contralateral rotation of the torso. Unilateral contraction causes lateral flexion of the vertebral column. Important …

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External Abdominal Oblique