TEACHMEANATOMY PDF

Posted by corona weather at PM Development of the gut The gut develops from a primitive endodermal tube. Itis divided into three parts: foregut: extends to the entry of the bile duct into the duodenum supplied by the coeliac axis midgut: extends to distal transverse colon supplied by superior mesenteric artery hindgut: extends to ectodermal part of anal canal supplied by inferior mesenteric artery. Foregut Starts to divide into the oesophagus and the laryngotracheal tube during the 4th week. Rotates so that the right wall of the stomach now becomes its posterior surface, forming the lesser sac behind. Vagus nerves rotate with the stomach so that the right vagus nerve becomes posterior and the left anterior. As the stomach rotates to the left, so the duodenumswings to the right, its mesentery fusing with the peritoneum of the posterior abdominal wall, leaving all but the first inch retroperitoneal.

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Posted by corona weather at PM Development of the gut The gut develops from a primitive endodermal tube. Itis divided into three parts: foregut: extends to the entry of the bile duct into the duodenum supplied by the coeliac axis midgut: extends to distal transverse colon supplied by superior mesenteric artery hindgut: extends to ectodermal part of anal canal supplied by inferior mesenteric artery. Foregut Starts to divide into the oesophagus and the laryngotracheal tube during the 4th week.

Rotates so that the right wall of the stomach now becomes its posterior surface, forming the lesser sac behind. Vagus nerves rotate with the stomach so that the right vagus nerve becomes posterior and the left anterior. As the stomach rotates to the left, so the duodenumswings to the right, its mesentery fusing with the peritoneum of the posterior abdominal wall, leaving all but the first inch retroperitoneal. Midgut Enlarges rapidly in early fetal life, becoming too big for the developing abdominal cavity, and herniates into the umbilical cord.

The apex of the herniated bowel is continuous with the vitellointestinal duct into the yolk sac. While the midgut is within the cord it rotates 90 counterclockwise around the axis of the superior mesenteric artery, bringing the third and fourth parts of the duodenum across to the left of the midline behind the superior mesenteric artery; this part of the duodenum is now fixed retroperitoneally.

The midgut returns to the abdomen at the 10th week and during this time it continues to rotate counterclockwise through a further , bringing the ascending colon to the right side of the abdomen with the caecum lying immediately below the liver. The caecum descends into its definitive position in the right iliac fossa, pulling the colon with it. This is a Sticky post This will appear right below the first post. You can edit this right from the template and change it to your own post.

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INITIEREA DE ELISABETH HAICH PDF

The Upper Limb

There are a large number of muscles in the upper limb, these are involved in allowing us to move and perform important tasks such as gripping with our hands or raising our arms, they also provide extra stability around the shoulder joint. There are 4 main groups of bones in the upper limb, the bones of the shoulder girdle, upper arm, forearm, and the bones of the hand. These provide skeletal support as well as being the site of origin and attachment for the many muscles to act as leverage points. The joints of the upper limb are found between some of these bones and the muscles crossing them allow us to orient these joints. The nerves of the upper limb arise from a complex arrangement of nerve fibers known as the brachial plexus; These nerves give sensation to our upper limb, as well as innervating the muscles, allowing us to move them at will. The anatomical areas found on the upper limb can serve as key landmarks to help us find important anatomical structures such as finding one of the superficial veins: The median cubital vein a common site site for venepuncture in the antecubital fossa of the arm.

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