Digestive System Functions and Processes

This video tutorial explains the concepts of tissues, organs, and organ systems, focusing on the digestive system. It covers cell specialization, the role of nutrients, and the digestion process, detailing how large food molecules are broken down and absorbed into the bloodstream. The video also highlights the functions of various digestive organs, including the mouth, stomach, small intestine, and large intestine, and concludes with a recap of the learning objectives.

What is a key characteristic of muscle cells that allows them to perform their function?

• They can divide rapidly.

• They can contract and shorten.

• They can store fat.

• They can produce hormones.

How is a tissue defined in biological terms?

• A system of organs working together.

• A collection of different organs.

• A group of cells with similar structure and function.

• A single cell with multiple functions.

Which of the following is an example of an organ?

• Muscle cell

• Stomach

• Digestive system

• Protein

What are the three main nutrients found in food?

• Enzymes, acids, and bases

• Sugars, fibers, and starches

• Carbohydrates, proteins, and lipids

• Vitamins, minerals, and water

What is the role of enzymes in the mouth during digestion?

• To break down proteins into amino acids

• To digest starch into smaller sugar molecules

• To neutralize stomach acid

• To absorb nutrients into the bloodstream

What is the function of hydrochloric acid in the stomach?

• To produce bile

• To help enzymes digest proteins

• To digest carbohydrates

• To absorb water

Which organ releases bile to aid in digestion?

• Pancreas

• Liver

• Esophagus

• Stomach

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

• To produce digestive enzymes

• To absorb nutrients into the bloodstream

• To store food

• To neutralize stomach acid

How are nutrients absorbed in the small intestine?

• By passive transport only

• By filtration

• By diffusion or active transport

• By osmosis only

What happens to water in the large intestine?

• It is digested into smaller molecules.

• It is converted into bile.

• It is absorbed into the bloodstream.

• It is used to neutralize acids.