A function of the tongue is A. the mechanical processing of food B. the sensory

Question

A function of the tongue is A. the mechanical processing of food B. the sensory analysis of food C. manipulating food in the mouth to assist in chewing D. All of the above. 13) There are three pairs of salivary glands that secrete fuid into the oral cavity. Which of the following is not an example of a salivary gland? A. parotid B. sublingual C. submandibular D. subpalatine Salivary amylase released by the salivary glands helps to digest A. carbohydrates B. fats C. lipids D. proteins Salivary secretions are normally controlled by the A. hypothalamus B. autonomic nervous system . ? C. midbrain D. reticular activating system 16. The bulk of each tooth consists of A. a pulp cavity B. a root canal C. dentirn 17. During the process of swallowing, all f the following actions occur except the A. epiglottis folds B. larynx moves upward C. soft palate moves upward D. glottis opens up 18. The smallest part of the stomach is called the A. fundus B. cardia C. pylorus D. bod Theregulates the flow of chyme between the stomach and the small intestine. A. fundus B. cardia C. pyloric sphincter D. rugae 20.) The ridges and folds found within the stomach provide a greater surface area for the breakdown of food. This area is called the A. pylorus B. rugae C. greater omentum D. gastric pits 21) Hydrochlorie acid lowers the pH of the stomach contents. Which of the following cells is responsible for secreting the hydrochloric acid? A. gastric pits B. parietal cells C. chief cells D. gastric glands secrete(s) pepsinogen into the stomach lumen to help break down proteins. A. Chief cells B. Gastric pits C. Parietal cells D. Rennin The bacteriawas found in approximately 80 percent of all cases of gastric and duodenal ulcers. Aggressive treatment has helped to eradicate the bacteria and decrease the incidence of peptic disease. 23./ A. Staphylococcus aureus B. Streptococcus pyogens C. Helicobacter pylori D. Streptococcus epidermidis 24 The phase that is initiated by the sight, smell, or taste of food is called the A. gastric phase B. intestinal phase C. cephalic phase D. bowel phase

Explanation / Answer

12 ) ANS = D

Explanation : tongue not only helps in masticating and chewing the food but we also taste with our tongue as there are taste buds on tongue

13 ) ANS = D

Explanation : we have only 3 pairs of salivary glands sublingual , parotid and submandibular there is NO subpalatine

14 ) ANS = A

Explanation : its a carbohydrate digesting ezyme it acts on alpha 1 - 4 glycosidic bonds of carbs and breaks it into simple sugars

15 ) ANS = B

Explanation : parasympathetic causes salivation and sympathetic stops it so only when we see food we salivate and we do not salivate when we fear

19) ANS = C

Explanation : its the pyloric sphicter loacted at the juction between stomach and small intestine ( duodenum) it made up of smooth muscle it can control and relax and regulate flow

20) ANS = B

Explanation : the mucosa of the stomach is not tightly adherent to the muscle below it so when there is is no food in stomach it forms foldings called rugae this are temporarythey disappear in full stomach

21) ANS = B

Explanation : Parietal cells have special mechanism by which they produce HCL

22) ANS = A

Explanation : Chief cells secrete pepsinogen which is further activated by HCL to pepsin

23) ANS = C

Explanation : H.Pylori breaksdown mucosal bicarbonate barrier which is responsible for protecting mucosa of stomach from gastic acid (hcl)

24) ANS = C

Explanation : Cephalic phase of gastric juice secrition begins even before food reaches the GIT

Constitutes 30-50% gastric juice secreted

Pathway : impulses from sense organs of taste smell or sight travel to appetite center

  hypothamus which further sends signals to release gastric acid for the stomach

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