Give 2 functions of the mucus along the alimentary canal
1. Protection: One of the main functions of mucus along the alimentary canal is to protect the inner lining of the digestive system. Mucus coats the walls of the digestive tract, forming a protective layer that helps prevent damage from stomach acid, digestive enzymes, and abrasive food particles. It acts as a barrier, preventing direct contact between the lining of the digestive organs and the substances being processed.
2. Lubrication: Mucus also serves as a lubricant, facilitating the movement of food along the digestive tract. It helps to moisten and soften the food, making it easier to swallow and allowing for smooth passage through the esophagus, stomach, and intestines. By reducing friction, mucus ensures that food can be more efficiently digested and absorbed.
1. Lubrication: Mucus is produced and secreted by the lining of the alimentary canal to provide a layer of lubrication. This helps in the smooth movement of food through the digestive tract, preventing any friction or damage to the delicate tissues.
2. Protection: Mucus acts as a protective barrier against harmful substances and pathogens that may be present in the food or drink we consume. It traps and immobilizes bacteria, viruses, and other microorganisms, preventing them from entering the body and causing infections. Mucus also protects the inner lining of the gastrointestinal tract from damage caused by stomach acid, digestive enzymes, and other irritants.