Protein digestion and absorption

• proteins -are important nutrients that your body uses to build cellular structures that carry out vital functions.
• Amino acid - basic unit of protein.
• Protein - a large molecule composed of one or more chains of amino acids.
• Specialised proteins can be enzymes, antibodies, hormones, collagen, muscle.
• Protein digestion begins in the stomach with the action of an enzyme that we previously learned about called pepsin.
• The molecule bonds that hold protein molecules together are called peptine bonds.
• Pepsin breaks down peptide bonds when this is broken you get chains of amino acid linked together called polypeptides.
• The peptide bonds holding the polypeptides together continue to be hydrolized or broken down and resut in smaller units called peptides.
• peptides - two or more amino acids linked together.
• Hepatic Portal System -the system of veins that are responsible for directing blood from the digestive tract to the liver.
• hepatic portal vein - a vein that trasports blood from the digestive tract to the liver.
• Hepatic veins - Drain the liver.