Bontrager Ch.12 Exam Questions And Answers Verified 100% Correct

Bontrager Ch.12 Exam Questions And Answers Verified 100% Correct biologic catalysts that speed up the process of digestion are called - ANSWER- enzymes the end products of digestion or the following classes of food carbohydrates - ANSWER- simple sugars the end products of digestion or the following classes of food lipids - ANSWER- fatty acids and glycerol the end products of digestion or the following classes of food proteins - ANSWER- amino acids the name of the liquid substance that aids in digestion and is manufactured in the liver and stored in the gallbladder - ANSWER- bile how does the material from "bile" assist in emulsificaiton in fat - ANSWER- large fat droplets are broken down into small fat droplets, which have greater surface area and give enzymes greater access for the breakdown of lipids absorption of nutrients primarily takes place in the ___, although some substances are absorbed through the lining of the ____ - ANSWER- small intestine and stomach of the three primary food substances carbohydrates, lipids, proteins. which one begins digestion in the mouth - ANSWER- carbohydrates any residues of digestion or unabsorbed digestive products are eliminated from ___ as a component of feces - ANSWER- large intestine peristalsis is an example of which type of digestion - ANSWER- mechanical which term describes food once it is mixed with gastic secreations in the stomach - ANSWER- chyme a high and transverse stomach would be found in a ___ patient - ANSWER- hypersthenic a J-shaped stomach that is more vertical and lower in the abdomen with the duodenal bulb at the level of L3-L4 would be found in a ___ patient - ANSWER- hyposthenic and asthenic on average, how much will abdominal organs drop in the erect position - ANSWER- 1-2 inches (2.5-5 cm) name the two abdominal organs most dramatically affected, in relation to location, by body - ANSWER- stomach and gallbladder would the fundus of the stomach be more superior or more inferior when one takes in a deep breath, why - ANSWER- inferior, because of its proximity to the diagphragm mechanical digestion of: oral cavity - ANSWER- mastication and deglutition mechanical digestion of: pharynx - ANSWER- deglutition mechanical digestion of: esophagus - ANSWER- deglutition and peristalsis mechanical digestion of: stomach - ANSWER- peristalsis and mixing mechanical digestion of: small intestine - ANSWER- peristalsis and rhythmic segmentation true/false: with the use of digital fluoroscopy, the number of postfluoroscopy radiographs ordered has greatly diminished - ANSWER- true another term for a negative contrast medium is - ANSWER- radiolucent contrast medium what substance is most commonly ingested to produce carbon dioxide gas as a negative contrast medium for GI studies - ANSWER- calcium or magnesium citrate what is the most common form of positive contrast medium used for studies of the GI system - ANSWER- barium sulfate is a mixture of barium sulfate a suspension of a solution - ANSWER- suspension true/false: barium sulfate never dissolves in water - ANSWER- true true/false: certain salts of barium are poisonous to humans, so barium contrast studies require a pure sulfate salt of barium - ANSWER- true what is the ratio of water to barium for a thin mixture of barium sulfate - ANSWER- one part water to one part barium what is the chemical symbol for barium sulfate - ANSWER- BaSO4 when is the use of barium sulfate contraindicated - ANSWER- when the mixture may escape into peritoneal cavitiy what patient condition prevents the use of water-soluble medium for an upper GI - ANSWER- sensitivity to iodine what is the major advantage for using a double contrast medium technique for esophagrams and upper GI - ANSWER- better coating and visibility of the mucosa. polyps, diverticula, and ulcers are better demonstrated the speed with which barium sulfate passes through the GI tract is called gastric - ANSWER- motility what is the purpose of the gas with a double-contrast media technique - ANSWER- it forces the barium sulfate against the mucosa for better coating the following devices on a digital fluoroscopy system converts the analog into digital signal - ANSWER- charged coupled device what device greatly reduces exposure to the tech from the fluoroscopic xray tube - ANSWER- bucky slot shield the minimum level of protective apron worn during fluoroscopy - ANSWER- 0.5 mm Pb/eq apron the major benefit of using a compression paddle during an upper GI study - ANSWER- reduces exposure to arms and hand of radiologist three cardinal principles of the radiation protection - ANSWER- time, distance, and shielding of the three cardinal principles is most effective in reducing exposure to the tech during a fluoro procedure - ANSWER- distance four advantages or unique features and capabilities of digital fluoro over conventional fluoro - ANSWER- optional post-fluoroscopy overhead image, multiple frames