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14. Adrenocorticotropic hormone is released from anterior pituitary gland; it will improve synthesis of cortisol in the adrenal gland. Both cortisol and ACTH can inhibit pituitary gland to release ACTH through negative feedback. However, if the negative feedback mechanism lost, which signs/symptoms you will observe in the patient? A) Round face, hump around shoulder and upper body obesity B) Thin, energetic and active C) Bulging eyes and goiters around the neck D) Swan neck fingers, swelling joints 15. Which of the following digestive tract component has the most circular folds and why? A) Duodenum, emulsify partially digested food from stomach B) Jejunum, absorb the nutrients C) lleum, synthesize vitamins D) Colon, absorb the water and desiccate the waste 16. Portal hypertension can result to hemorrhoids through which of the following veins? A) Paraumbilical veins and inferior epigastric veins B) C) Left colic vein and inferior rectal vein D) Sigmoid veins with rectal veins Superior rectal vein and middle rectal vein 17. Rectus sheath at the anterior abdominal wall above umbilicus contains which of the following aponeurosis? A) Full thickness of external oblique, internal oblique and transversus abdominis aponeurosis B) Full thickness of external oblique, internal oblique and half thickness of transversus abdominis aponeurosis. C) Full thickness of external oblique/half thickness of internal oblique and transversus abdominis aponeurosis D) Half thickness of external oblique, internal oblique and transversus abdominis aponeurosis. 18. Even with anastomosis, some region still has limited blood supply and will suffer necrosis easily when blood supply insufficiency. They are called "watershed zones". Which of the following region belongs to "watershed area"? A) Pancreas B) Duodenojejunal junction C) Hepatic flexure of colon D) Splenic flexure of colon