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What are the two main reasons why we eat food?
To get energy for survival and raw materials for building tissues and structures.
What are some examples of biological matter found in nachos?
Carbohydrates, fat, and protein.
How does your body acquire "stuff" from your food?
By consuming food that contains biological matter and calories.
What is the role of the digestive system in the body?
It breaks down food into its basic components and absorbs nutrients to provide energy and raw materials.
What are the four main types of macromolecules found in food?
Lipids, carbohydrates, proteins, and nucleic acids.
What is the first main step in the process of digestion? Ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and elimination.
Ingestion
How does the digestive system break down food both mechanically and chemically?
Mechanically through processes like chewing and peristalsis, and chemically through the secretion of enzymes.
What is the role of enzymes in the process of digestion?
Enzymes break down large molecules in food into smaller, absorbable components.
What is peristalsis in the digestive system?
Peristalsis is the involuntary contraction and relaxation of the smooth muscles in the digestive organs, which helps propel food through the digestive tract.
What is the ultimate goal of the digestive process?
To break down food into its basic chemical building blocks and to absorb these nutrients for use by the body.
How does the digestive system absorb nutrients from the food we eat?
Through the walls of the small intestine and transported to the body's cells via the bloodstream.
Why is elimination an important step in the digestive process?
Elimination is important to remove indigestible substances from the body and complete the digestive process.
Name some of the organs that are INDIRECTLY involved in digestion.
gall bladder, liver, and pancreas.
Name some of the organs involved in absorption in the digestive system..
small and large intestines.
Name some organs and tissues involved in the first steps of digestion.
Mouth, pharynx, esophagus
What kind of muscle is in the digestive system?
Smooth muscle
