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MBCDigestion
Digestion system
Question | Answer |
---|---|
The alimentary canal includes (not counting any accessory organs) | mouth, pharynx, esophagus, stomach, small and large intestines |
Transfer of nutrients from the intestines to the blood or lymph is called | absorption |
Metabolism is a series of chemical reactions that take place in the tissue cells. These reactions are necessary for | building and repairing tissue and releasing heat and energy |
The small intestine consists of three parts that, beginning at the stomach, appear in the following order: | duodenum, jejunum, ileum |
The total length of the adult alimentary canal is about | 25 to 30 feet |
The wavelike muscular movement that propels material through the alimentary canal is | called peristalsis |
The complete process of digestion changes sugars and starches to | glucose |
Bile is important in digestion because it | breaks down fat globules so that they can be more easily digested by enzymes |
The functions of the gallbladder include | contracting and ejecting bile into the duodenum while digestion is going on in the stomach and intestines |
The sphincter between the esophagus and the stomach is called the | cardiac sphincter |
The structure at the junction of the large and small intestines that controls the passage of feces is the | ileocecal valve |
From which part of the intestines does the appendix arise? | the cecum |
The structures in the small intestine that are chiefl y responsible for the absorption of digested food are called | villi |
The walls of the digestive system are composed of | smooth muscle |
Food is broken down into its chemical components by the action of | enzymes |
The organ in which protein digestion begins is the | stomach |
At each end of the stomach are muscles that relax to form an opening and contract to close the opening. These muscles are known as | sphincter muscles |
Enzymes are secreted by the | linings of the stomach and intestines |
The epiglottis serves to prevent food from | being aspirated into the trache |
The colon functions mainly to | absorb water from the waste materials of digestion |
Simple sugar is normally stored in the liver in the form o | glycogen |
Salivary glands are found in all the following locations except | in the nasopharynx |
The sigmoid colon empties into the | rectum |
The parts of the colon in order, from proximal to distal, are | ascending, transverse, descending, sigmoid c) ascending, descending, transverse, sigmoid d) transverse, ascending, descending, sigmoi |