The video explores the physiology of the small intestine, focusing on its role in digestion and absorption. It discusses the breakdown of nutrients entering from the stomach and the enzymes involved, including brush border and pancreatic enzymes. The video explains the function of microvilli in increasing surface area for absorption and details the specific enzymes that degrade carbohydrates and proteins. It also covers the secretion of pancreatic enzymes in response to hormones and their activation in the duodenum. The video concludes with a preview of the next topic, which will cover the liver and lipid absorption.

What is the primary function of the small intestine in digestion?

• Mechanical digestion

• Chemical digestion and absorption

• Hormone production

• Water absorption

Which enzyme is responsible for breaking down maltose in the small intestine?

• Amylase

• Maltase

• Lactase

• Sucrase

What is the role of microvilli in the small intestine?

• Increase surface area for absorption

• Produce hormones

• Secrete digestive enzymes

• Transport nutrients to the liver

Which of the following is NOT a brush border enzyme?

• Sucrase

• Aminopeptidase

• Pancreatic lipase

• Lactase

What triggers the secretion of pancreatic enzymes into the small intestine?

• Presence of chyme in the stomach

• Hormones like secretin and cholecystokinin

• High blood sugar levels

• Absence of food in the stomach

Which enzyme is responsible for breaking down triglycerides?

• Pancreatic amylase

• Pancreatic lipase

• Trypsin

• Sucrase

Why are some pancreatic enzymes secreted in an inactive form?

• To reduce energy consumption

• To prevent digestion of the pancreas itself

• To enhance their effectiveness

• To increase their lifespan

What does the suffix 'ogen' indicate about an enzyme?

• It is active

• It is a lipid enzyme

• It is inactive

• It is a carbohydrate enzyme

Besides enzymes, what else does the pancreas secrete into the small intestine?

• Bicarbonate

• Hormones

• Bile

• Glucose

Which organ works with the pancreas to secrete bile into the small intestine?

• Spleen

• Kidneys

• Liver

• Stomach