45 Questions
What is the primary function of absorption in the digestive system?
To provide energy
Where does most absorption of nutrients occur in the digestive system?
Small intestine
What is the function of villi in the small intestine?
To increase surface area for absorption
How does the epithelium in the villi contribute to the absorption process?
By allowing nutrients to pass through quickly
Which structure in the small intestine absorbs and transports lipids?
Lacteal
What is the role of goblet cells in the small intestine?
To secrete mucus
Why are there transverse folds in the walls of the small intestine?
To increase the surface area available for absorption
What is the role of blood capillaries in the villi?
Transport absorbed nutrients like glucose and amino acids
What is essential for the transportation of nutrients like glucose and amino acids into the bloodstream?
Active absorption processes
What role does the liver play in the assimilation process?
Metabolizing glucose and deaminating amino acids
Where does egestion primarily occur?
Large intestine
What happens to feces after being stored in the rectum?
Expelled through the anus
Which organ is responsible for processing substances like alcohol and hormones during assimilation?
Liver
What is involved in moving nutrients like glucose and amino acids against concentration gradients?
Energy
Where do glucose and amino acids eventually reach after traveling through the blood circulatory system?
Various body cells
What is the function of villi in the small intestine?
To provide a large surface area for absorption
How do transverse folds in the walls of the small intestine contribute to absorption?
By increasing the surface area for absorption
What is the role of mitochondria in the epithelial cells of the small intestine?
To provide energy for active absorption processes
Why is the epithelium lining the villi only one-cell layer thick?
To speed up the absorption of nutrients
What do goblet cells in the small intestine secrete to facilitate absorption?
Mucus to keep the absorptive surface moist
Which structure in the villi of the small intestine is responsible for absorbing and transporting lipids?
Lacteal
What is the primary function of the small intestine in the digestive system?
Absorbing nutrients from food
What is the primary role of blood capillaries in the villi?
To transport absorbed nutrients like glucose and amino acids into the bloodstream
Which organelle plays a crucial role in metabolizing glucose and deaminating amino acids during assimilation?
Mitochondria
What is the main process involved in the transportation of glucose and amino acids from the small intestine into the bloodstream through blood capillaries?
Active absorption
Where do essential nutrients like glucose and amino acids travel to after being transported through the blood circulatory system?
Body cells
Which arteriole plays a significant role in supplying blood to the villi for nutrient absorption?
Mesenteric artery
Which part of the digestive system is primarily responsible for the removal of undigested material?
Large intestine
What role does the rectum play in the process of egestion?
Expelling feces through the anus
What is the term used for the process by which absorbed nutrients are incorporated into the cells of the body?
Assimilation
What process requires energy to move nutrients against concentration gradients?
Active absorption
Where is most water and mineral salts absorbed from undigested material in the digestive system?
Colon
What is the role of the liver in the assimilation process?
Metabolizing glucose and deaminating amino acids
What is the main function of villi in the small intestine?
Absorbing lipids
Which process in the body involves incorporating absorbed nutrients into various cells for different purposes?
Assimilation
What happens to feces after being temporarily stored in the rectum?
Expelled through the anus
Which nutrient is utilized for protein synthesis within various cells of the body?
Amino acids
What is the primary purpose of transporting essential nutrients like glucose and amino acids into the bloodstream?
Growth and maintenance
What is the main function of villi in the small intestine?
Increase the surface area for nutrient absorption
How do goblet cells contribute to the absorption process in the small intestine?
Secrete mucus to keep the absorptive surface moist
Why is the epithelium lining the villi of the small intestine only one-cell layer thick?
To allow nutrients to pass through quickly
What is the role of lacteals in the villi of the small intestine?
Absorb and transport lipids
How do the transverse folds in the walls of the small intestine contribute to absorption?
Further increase the surface area for absorption
Which structure helps provide energy for the active absorption processes in the small intestine?
Mitochondria
What is the primary function of the mucus secreted by goblet cells in the small intestine?
Protect and lubricate the absorptive surface
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