Organization of life order
-:- Atoms, molecules, cell, tissue, organ, organ system, organism
Digestive system
-:- Ingestion and digestion of food
Facilitates the movement of nutrients into the body
Responsible for eliminating unabsorbed waste
Nervous system
-:- Sends nerve signals to help...
✓ -:- The amount of time it takes for food to pass through the length of the digestive
tract
Healthy adults 24-72 hours
Muscus
✓ -:- Viscous fluid secreted by the glands of the GI tract
Responsible for lubricating and protecting the digestive tract from harsh environments
Enzymes
✓ -:- Protein molecules that speed up the rate of chemical reactions without
undergoing any change
Assist with breaking down carbohydrate, protein, and fats into smaller components
Nerve signals
✓ -:- Stimulated by the thought, sight, smell, and presence of food
Causes muscle contractions that churn, mix, and propel food through the gut
Stimulate or inhibit gastric secretions
Coordinate digestive activity with other functions
4|Page | Grade A+| 2024/2025
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