Podcast
Questions and Answers
What is the primary function of the digestive system?
What is the primary function of the digestive system?
- Transfer nutrients, H2O, and electrolytes from food into the body's internal environment (correct)
- Motility to mix food with digestive juices and to move food forward
- Elimination of un-digested and un-reabsorbed food
- Secretion of water, electrolytes, mucous, and enzymes
What occurs in the small intestine?
What occurs in the small intestine?
- Motility to mix food with digestive juices and to move food forward
- Digestion of large food molecules into small simple units
- Absorption of digested food from GIT lumen into blood or lymph (correct)
- Elimination of un-digested and un-reabsorbed food
What is the function of digestive enzymes?
What is the function of digestive enzymes?
- To absorb digested food from the GIT lumen into blood or lymph
- To break down complex molecules into simple absorbable units (correct)
- To eliminate un-digested and un-reabsorbed food
- To secrete water, electrolytes, mucous, and enzymes
What is the role of gut motility?
What is the role of gut motility?
What is the structure that includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus?
What is the structure that includes the mouth, pharynx, esophagus, stomach, small intestine, large intestine, and anus?
What is the role of salivary glands?
What is the role of salivary glands?
Which type of muscle contraction is involved in the movement of food in the digestive tract, except at the oral and anal ends?
Which type of muscle contraction is involved in the movement of food in the digestive tract, except at the oral and anal ends?
What is the primary function of amylase in saliva?
What is the primary function of amylase in saliva?
What is the main purpose of propulsive (peristaltic) movement in the gut?
What is the main purpose of propulsive (peristaltic) movement in the gut?
What is the percentage of water in saliva?
What is the percentage of water in saliva?
Which of the following is a function of saliva in oral hygiene?
Which of the following is a function of saliva in oral hygiene?
What is the role of lysozymes in saliva?
What is the role of lysozymes in saliva?
What is the primary function of lysozyme in saliva?
What is the primary function of lysozyme in saliva?
What type of receptors are found in the pharynx and stimulate the swallowing reflex?
What type of receptors are found in the pharynx and stimulate the swallowing reflex?
What is the role of thiocyanate ions in saliva?
What is the role of thiocyanate ions in saliva?
What is the consequence of a lack of salivation?
What is the consequence of a lack of salivation?
What is the correct sequence of events in the mechanism of swallowing?
What is the correct sequence of events in the mechanism of swallowing?
What type of nerves are involved in the efferent pathway of the swallowing reflex?
What type of nerves are involved in the efferent pathway of the swallowing reflex?
