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A:
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(i) Draw a well labeled diagram of human
(ii) Describe the role of following in digestion.
a) Bile
b) Salivary amylase
c) HCl
Step by step
Solved in 3 steps with 1 images
- Which of the following best describes the function of othe mesentery in the digestive system? a.) Suspending the digestive tract from the abdominal wall and housing blood vessels and nerves to support the digestive tract. b.) Absorbing nutrients from the intestines c.) Controlling whether the mouth is open to the esophagus or the trachea. d.) Conducting peristalsis and segmentation to ensure that food perticles are mixed.Which of the following best describes the purpose of the intestinal phase of digestion? a) To increase efficient digestion in the stomach O b) To decrease the metabolic cost of digestion c) To prevent gastric auto-digestion d) To allow long lasting digestion of food in order to produce stable blood sugar levelsWhich of the following would be increased during the cephalic phase of digestion? a) Cholecystokinin (CCK) b) Gastrin O) Secretin d) Gastric Inhibitory Peptide (GIP)
- The cephalic phase of digestion a) begins when someone thinks about, sees, smells, and initially tastes food b) is an immediate response to stomach distension. c) occurs quickly after ingested food raises gastric pH. d) is mediated by CCK and secretin O e) All of these are correctSelect the FALSE statement/s: O A) Fat digestion occurs in the gall bladder and the small intestine O B) Protein digestion occurs in the stomach and in the small intestine OC) Carbohydrate digestion occurs in the oral cavity, stomach and the small intestine OD) Both A and B OE) Both A and CHow does the digestion and absorption of fat differ from that of carbohydrates? (Pick all that apply) A)Absorbed fat first enters the lymphatic system, whereas carbohydrates directly enter the blood. B)Fat absorption occurs in the stomach, whereas carbohydrates are absorbed from the small intestine. C)Only fat must be worked on by bacteria in the large intestine before it can be absorbed. D)Carbohydrates need to be emulsified before they can be digested, whereas fats do not. E)Processing of fat does not require any digestive enzymes, whereas the processing of carbohydrates does.
- Why is the small intestine well adapted for nutrient absorption? a) Acid secretions from the stomach are neutralized in the duodenum b) CCK is released from the duodenum to promote liver and pancreatic secretion c) Large surface area due to the presence of the plicae circulars, villi, and microvilli d) The small intestine is very long and thinWhich of the following is NOT an enzyme secreted into the small intestine as an aid to chemical digestion: A) Bile B) Lipase D) Amylase“Digestion”, alone, refers to the (very specific answer) A) absorption of nutrients in the gut. B) progressive dehydration of indigestible residue. C) input of food into the digestive tract. D) chemicall/mechanical breakdown of food. E) mixing of nutrients with digestive enzymes.
- E) Vital Capacity (VC) The volume of air in the lungs after a forceful exhalation is the A) Total Lung Capacity (TLC) B) Vital Capacity (VC) C) Residual Volume (RV) E) Expiratory Reserve Volume (ERV)In which part of the digestive system the absorption of following substances takes place?(a) Certain drugs(b) Glucose, fructose and fatty acids(c) Water, some minerals and drugs(d) Simple sugar and alcohola) What is the general function of all enzymes that are involved in the digestive process.b) Use the Table below to summarise the function of 6 named digestive enzymes that are either secreted from specific regions of the gastrointestinal system, or part of the intestinal brush border. Enzyme Site of secretion / Action Function (to include substrate and product formed)