12. is an extension of the peritoneal membrane that holds the small The intestin

Question

12. is an extension of the peritoneal membrane that holds the small The intestine in place. a. mesocolon b. mesentery c. serosa d. greater omentum e. adventitia 13. Which of the following is not true of saliva? a. protects teeth from bacterial decay b. contains enzymes that begin the breakdown of proteins c. moistens food and aids in compacting of the bolus d. dissolves food chemicals so they can be tasted e. all are correct 14. Th called e crown of each tooth is covered by a mineralized matrix similar to that of bone a. enamel b. cementum. c. dentin. d. pulp. e. periodontium. 15. Which of the following best describes the function of the esophagus? a. stores food until it can be digested b. begins protein digestion c. secretes amylase d. absorbs amino acids e. transports bolus 16. When the stomach empties, food passes through the into the small intestine. a. fundus b. cardia c. pyloric sphincter d. rugae e. lesser curvature 7. The hormone that controls most of the events during the absorptive state is: a. glucagon b. insulin c. cortisol d. CCK e secretin

Explanation / Answer

Question 12)

Answer : option- B mesentery

Reason : the peritoneum forms various folds at its insertion at the posterior abdominal wall. these folds in vest viscera as well as parts of the gastrointestinal tract. the small intesting is invested in a layer f peritoneum called the mesentery. the mesentery carries the blood vessels, arteries and veins to the small intestine.

Question 13)

Answer: option -E all are correct

Reason : saliva is a substance secreted by the salivary glands around the oral cavity. this performs various functions such as initial digestion, moistening of food particles and protection of teeth against decay.

Question 14)

Answer: option -A  enamel

Reason: the structure of the tooth can be described as being of various layers. from outside in the layers are the enamel, dentine and the pulp. the cementum and periodontal tissues allow the tooth to fix onto the tooth socket. the outermost layer is the enamel. this is one of the strongest tissues of the body as is similar to bone.

Question 15)

Answer: option -E transport bolus

Reason: the oesophagus is a muscular tube connecting the oropharynx to the stomach. the main function of the oesophagus is to transport a food bolus from the oropharynx to the stomach through peristaltic movements assisted by gravity.

Question 16)

Answer : option- C -pyloric sphincter

Reason : the stomach is a organ which temporarily stores food while the digestive process is initiated. it comprises of various parts which are namely the antrum, cardia, fundus and pylorus. the pyorus is the outlet of the stomach and connects it to the first part of the duodenum.

Question 17)

Answer : option- E -secretin

Reason: secretin is a hormone secreted by the gastric mucosa in response to food entering it. this leads to secretion of hydrochloric acid and in turn assists the digestive process.

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