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HADUnitIIIReview
HADUnitIIIReview

... scrotum/labium majora, which are supplied by the ilioinguinal nerve • Path: exits greater sciatic foramen and wraps around the ischial spine to enter the lesser sciatic foramen, extending anteriorly to the perineum ...
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... subsegmental resection of the liver, the surgeon must know exactly which parts of the liver are diseased so that vascular supply and venous and biliary drainage can be preserved& also Because of this division into self-contained units, each segment can be resected without damaging those ...
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Embryology of the Female Reproductive Tract

... cloacal folds which fuse anteriorly to give rise to an anlage referred to as the genital tubercle which is formed earlier in the fourth week (see Sect. 2.5.1). The cloacal membrane remains imperforate at this time. 2.4.2 The Urogenital Sinus During the seventh week the urorectal septum fuses to the ...
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Human digestive system



In the human digestive system, the process of digestion has many stages, the first of which starts in the mouth (oral cavity). Digestion involves the breakdown of food into smaller and smaller components which can be absorbed and assimilated into the body. The secretion of saliva helps to produce a bolus which can be swallowed to pass down the oesophagus and into the stomach.Saliva also contains a catalytic enzyme called amylase which starts to act on food in the mouth. Another digestive enzyme called lingual lipase is secreted by some of the lingual papillae to enter the saliva. Digestion is helped by the mastication of food by the teeth and also by the muscular contractions of peristalsis. Gastric juice in the stomach is essential for the continuation of digestion as is the production of mucus in the stomach.Peristalsis is the rhythmic contraction of muscles that begins in the oesophagus and continues along the wall of the stomach and the rest of the gastrointestinal tract. This initially results in the production of chyme which when fully broken down in the small intestine is absorbed as chyle into the lymphatic system. Most of the digestion of food takes place in the small intestine. Water and some minerals are reabsorbed back into the blood, in the colon of the large intestine. The waste products of digestion are defecated from the anus via the rectum.
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