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Questions and Answers
What is the primary function of the digestive system?
What is the primary function of the digestive system?
- To maintain bone density
- To regulate body temperature
- To obtain the necessary molecules from ingested food (correct)
- To eliminate waste from the body
Which of the following is NOT a part of the digestive tract?
Which of the following is NOT a part of the digestive tract?
- Brain (correct)
- Pancreas
- Stomach
- Liver
What is the main site of water and electrolyte absorption in the digestive system?
What is the main site of water and electrolyte absorption in the digestive system?
- Large intestine (correct)
- Stomach
- Small intestine
- Esophagus
What are the molecules broken down into during digestion?
What are the molecules broken down into during digestion?
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What is another name for the digestive system?
What is another name for the digestive system?
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Study Notes
The Digestive System
- The digestive system consists of the digestive tract (oral cavity, esophagus, stomach, small and large intestines, and anus) and associated glands (salivary glands, liver, and pancreas).
- Also referred to as the gastrointestinal tract (GIT) or alimentary canal.
Function of the Digestive System
- The primary function is to obtain necessary molecules from ingested food for the body's maintenance, growth, and energy needs.
Digestion Process
- Proteins, complex carbohydrates, nucleic acids, and fats are broken down into small molecule subunits during digestion.
- These subunits are easily absorbed through the small intestine lining.
Absorption of Water and Electrolytes
- Most water and electrolytes are absorbed in the large intestine.
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Description
The human digestive system, also called the gastrointestinal tract, breaks down food into smaller molecules for energy, growth, and maintenance. It consists of the digestive tract and associated glands.
