Podcast
Questions and Answers
What is the main purpose of the alimentary tract?
What is the main purpose of the alimentary tract?
- Production of red blood cells
- Absorption of oxygen and carbon dioxide
- Absorption of water, electrolytes, vitamins, and digestive products (correct)
- Movement of blood through the alimentary tract
What are the characteristics of gastrointestinal smooth muscle fibers?
What are the characteristics of gastrointestinal smooth muscle fibers?
- 250 to 500 micrometers in diameter
- Arranged in bundles of 1000 parallel fibers (correct)
- 500 to 1000 micrometers in diameter
- 2 to 10 micrometers in length
What is one of the objectives regarding the GI tract organization and functioning?
What is one of the objectives regarding the GI tract organization and functioning?
- Comprehending the role of the Endocrine system
- Understanding the general arrangement of the nervous system
- Recognizing the characteristics associated with skeletal muscle
- Knowing the basic physiology behind the GI tract (correct)
How does the alimentary tract provide the body with a continual supply of nutrients?
How does the alimentary tract provide the body with a continual supply of nutrients?
What is the role of the Nervous system in the organization and functioning of the GI tract?
What is the role of the Nervous system in the organization and functioning of the GI tract?
What is required for the purpose of secretion of digestive juices and digestion of the food?
What is required for the purpose of secretion of digestive juices and digestion of the food?
Which of the following is NOT a stimulus for the secretion of cholecystokinin?
Which of the following is NOT a stimulus for the secretion of cholecystokinin?
In the GI tract, which hormone stimulates gastric emptying?
In the GI tract, which hormone stimulates gastric emptying?
Which site secretes gastric inhibitory peptide?
Which site secretes gastric inhibitory peptide?
What is the role of secretin in the GI tract?
What is the role of secretin in the GI tract?
Which statement about smooth muscle contraction in the GI tract is false?
Which statement about smooth muscle contraction in the GI tract is false?
What type of stimuli are needed for the secretion of motilin?
What type of stimuli are needed for the secretion of motilin?
Which hormone inhibits gastric acid secretion?
Which hormone inhibits gastric acid secretion?
Where are the S cells located that secrete cholecystokinin?
Where are the S cells located that secrete cholecystokinin?
What is inhibited by secretin?
What is inhibited by secretin?
What are the stimuli for the secretion of gastric inhibitory peptide?
What are the stimuli for the secretion of gastric inhibitory peptide?
What is the main reason for the low resistance movement of ions from one muscle cell to the next?
What is the main reason for the low resistance movement of ions from one muscle cell to the next?
Which type of electrical waves are slow, undulating changes in the resting membrane potential?
Which type of electrical waves are slow, undulating changes in the resting membrane potential?
What causes smooth muscle contraction in response to entry of calcium ions into the muscle fiber?
What causes smooth muscle contraction in response to entry of calcium ions into the muscle fiber?
How many plexus are present in the enteric nervous system, and what are their respective functions?
How many plexus are present in the enteric nervous system, and what are their respective functions?
Which stimuli can activate afferent sensory nerve fibers?
Which stimuli can activate afferent sensory nerve fibers?
What is the main effect of parasympathetic stimulation on the enteric nervous system?
What is the main effect of parasympathetic stimulation on the enteric nervous system?
What is the function of slow waves in intestinal smooth muscle?
What is the function of slow waves in intestinal smooth muscle?
Which factor causes hyperpolarization of the membrane, making it more difficult to depolarize?
Which factor causes hyperpolarization of the membrane, making it more difficult to depolarize?
What is a characteristic feature of tonic contraction in intestinal smooth muscle?
What is a characteristic feature of tonic contraction in intestinal smooth muscle?
Which type of reflexes are controlled entirely within the gut wall, integrating gastrointestinal secretion, peristalsis, mixing, contractions, and local inhibitory effects?
Which type of reflexes are controlled entirely within the gut wall, integrating gastrointestinal secretion, peristalsis, mixing, contractions, and local inhibitory effects?
Which stimuli can cause increased secretion of gastrin?..
Which stimuli can cause increased secretion of gastrin?..
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