Last updated on August 30th, 2023 at 10:29 pm
Q: What is the role of the villi in the large intestine?
The inner lining of the intestinal wall in the large intestine has numerous finger-like projections called villi, which help to increase the surface area for the absorption of food. However, the large intestine primarily absorbs water and electrolytes and forms solid waste products.
Q: What is bloating and what causes it?
Bloating is a swollen state caused by retention of fluid or gas.
Q: What is defecation?
Defecation is the act or process of discharging undigested or waste material from a cell or organism, specifically referring to the elimination of feces from the body.
Q: What is assimilation in the context of digestion?
Assimilation is the process of absorption of vitamins, minerals and other chemicals from food within the gastrointestinal tract.
Q: Which enzymes act upon food in the ileum of the small intestine?
Enzymes such as erepsin, maltose, sucrose, and lactase act upon food in the ileum of the small intestine.
Q: What is the function of the caecum in the digestive system?
The caecum receives the contents of the ileum and continues the absorption of water and salt.
Q: What are villi and what is their function in the small intestine?
Villi are tiny finger-like structures that line the inner surface of the small intestine, and their function is to aid in the rapid absorption of food.
Q: What is the function of bile and where is it secreted and stored in the body?
Bile is a green-yellow colored fluid that aids in the digestion of fat by converting it into tiny droplets for easier breakdown. It is secreted by the liver and stored in the gallbladder.
Q: What is peristalsis and where does it occur in the digestive system?
Peristalsis is the process by which food is moved forward in the food pipe as well as in the entire alimentary canal.
Q: Name the parts of the human digestive system.
The parts of the human digestive system include the mouth, esophagus, stomach, small intestine, and large intestine.
Q: What is the function of the tongue in the mouth?
The tongue helps in mixing saliva with food and softening it.
Q: What are the substances present in gastric juice?
Gastric juice contains three substances: hydrochloric acid, the enzyme pepsin, and mucus.
Q: What is the function of villi in the small intestine and what effect do they have on the surface area of the inner walls?
Villi aid in the rapid absorption of food and increase the surface area of the inner walls of the small intestine.
Q: What is the act of expelling feces from the body called?
The act of expelling feces from the body is called egestion or defecation.
