Which of the following has highest pH ?

The correct answer is Pancreatic juice

Explanation:

• In the human digestive system, different secretions have varying pH levels depending on their roles in digestion. These secretions include salivary secretion, gastric juice, pancreatic juice, and intestinal secretion.
• The pH of pancreatic juice is the highest.
  • The pH of pancreatic juice is around 8.0 to 8.3, making it strongly alkaline.
  • This alkalinity is crucial for neutralizing the acidic chyme from the stomach as it enters the small intestine, creating an optimal environment for the action of digestive enzymes.
  • Pancreatic juice contains enzymes like trypsin, lipase, and amylase that aid in digesting proteins, fats, and carbohydrates, respectively.
• Salivary secretion: The pH of saliva is typically around 6.2 to 7.6, making it slightly acidic to neutral.
• Gastric juice: The pH of gastric juice is very low, typically around 1.5 to 3.5, making it highly acidic.
• Intestinal secretion: The pH of intestinal juice (also known as succus entericus) ranges from about 7.5 to 8.0, which is slightly alkaline.