Exam 3

alkathryn's version from 2016-10-31 22:21


Question Answer
The pharynx connects the nasal and oral cavities to the ___. It serves both the respiratory and digestive systems as a channel for air and foodlarynx and esophagus
_________ begins in the mouth with chewing or mastication and continues with churning and mixing actions in the stomachmechanical digestion
Lingual lipase is present inSaliva
Which of the following statements about the mesentery is incorrect?It is composed of a layer of serous membrane fused with a layer of mucus membrane
The submucosal plexus controls the motility of the digestive tractFalse
The order of the large intestines is cecum, ascending colon, hepatic flexure, transverse colontrue
The hepatopancreatic ampulla is composed of the pancreatic duct nd the common bile ductTrue
The pyloric sphincter regulates passage of chyme from the stomach into the duodenumTrue
Portal triads contain a branch of the hectic artery, hepatic vein, and bile ductTrue
Bile gisests fats and related lipidsFalse
Protein digestion begins in the oral cavity as salivary peptides is presentFalse
In order to prevent self-digestion of the pancreas activation of pancreatic proteases occurs in the Duodenum
Blood flows into the liver via the _________ and _________, while blood exits the liverhepatic portal vein, hepatic artery, hepatic vein
The function of a lacteal is toabdorb lipids
The propulsive function that occurs in the esophagus is calledperistalsis
Starch is chemically digested by enzymes produced in the salivary glands and pancreas
SThe major outcome that occurs through mechanical digestive actives isan increase in the surface area of food by breaking it into smaller fragments
What is the main organic molecule digested in the stomach?Proteins
Which activity below is a mixing action that exposes materials to secretions and absorptive surfaces?Segmentation
Which sequence below represents the correct layering of the wall of the GI tract beginning with the layer next to the lumen?Mucosa-submucosa-muscularis externa-serosa
Each of the following products of digestion is taken up by the capillaries in the small intestine except one. Identity the exceptionChylomicrons
Which salivary glands produce a thick serous secretion containing large amounts of salivary amylase?Parotid glands
When you walk into a Mexican restaurant and smell the savory aroma of fajitas, which phase of gastric activity is triggered?Cephalic phase
Sympathetic stimulationinhibits submucosal glands
Bile acts as anemulsifier
The movements of the musclaris external are coordinated by themyenteric plexus
The synthesis of glucose from nonflucose precursors is known as glucogenesis
Which vitamin is necessary for blood clotting?vitamin K
All of these foods contain cholesterol exceptcoconut oil
The brain relies almost entirely on _ for energy productionglucose
Which of these carbohydrates is a disaccharide composed of two glucose molecules?Maltose
All of these carbohydrates come from plants exceptlactose
Which major mineral makes a major contribution to the solute concentration of extracellular fluids?Sodium
The element _ is an essential part of proteinsSulfur
An essential compound not readily synthesized in the liver is ___linoleic acid
Tanisha has abdominal pins. Medical tests reveealmalabsorption
David has sustained severe damage to his liver in a car accident. Digestion of which nutrient will be most affected?Lipids
Elliot thought that his peptic ulcers were caused by his nahhingA bacterial infection
At the junction between the esophagus and the stomach, the epithelial lining changes abruptly from _ to _stratified squamous, simple columnar
Which of the following vitamins is necessary for producing collagen?Vitamin C
A deficiency of vitamin _ causes osteomalaciaD
After eating, _ signals the hypothalamus to suppress appetiteLeptin
Ribose and deoxyribose are carbohydratesTrue
Which one of the following is absurd in the GI tract without being digested?Vitamins
Vitamins function as _ to release energy from the energy nutrients such as carbs, fats, and proteinsCoenzymes
BMI measuresweight in proportion to heigh
A negative nitrogen balance results from a net loss ofamino acids
Eessential nutrients must be ingested
Strict vegetarians who eat _ would obtain all the essential amino acids in their dietsa combination of cereals and legumes
The role of _ is the transport excessive cholesterol from peripheral tissue to the liver where it si broken down and becomes part of the bileHigh-density lipoproteins