Answer :
Final answer:
Digestion is the process of breaking down food into smaller molecules for absorption and use by the body. Saliva helps with the initial breakdown of carbohydrates, bile juice aids in the digestion and absorption of fats, and pancreatic juice contains enzymes for further digestion of proteins, carbohydrates, and fats.
Explanation:
Digestion is the process by which food is broken down into smaller molecules that can be absorbed and used by the body. It involves several organs and substances that play specific roles.
Saliva: Saliva, produced by the salivary glands, helps in the initial breakdown of food. It contains enzymes, such as amylase, which begins the digestion of carbohydrates.
Bile Juice: Bile juice, produced by the liver and stored in the gallbladder, aids in the digestion and absorption of fats. It emulsifies fats, breaking them down into smaller droplets, which increases the surface area for enzymes to act upon.
Pancreatic Juice: Pancreatic juice, secreted by the pancreas, contains enzymes that further break down proteins, carbohydrates, and fats. For example, trypsin breaks down proteins, amylase continues the digestion of carbohydrates, and lipase digests fats.
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