A Journey of a Sausage Roll Essay

1764 WordsMay 21, 20158 Pages
A journey of a sausage roll through the digestive system A sausage roll is made up of puff pastry and sausage meat. The pastry is made up of carbohydrates, fat and a very small amount of protein, the sausage meat is made up of fat, and a small amount of carbohydrates and protein. Caloriecount (2015) Donaldrussell (2015) Mouth/Teeth Anatomyeshs (2015) I am a sausage roll even before you eat me, when you smell me, see me, or think about me, digestion begins. Saliva begins to form in your mouth. The first step in the digestion of me takes place in the mouth; you put me in your mouth and your centre teeth/incisors, cut me into bit-sized pieces. On both side of the incisors are sharp and pointy teeth called canines. These teeth tear and slash me in your mouth into smaller pieces. Behind the canines are the premolars and molars, which crush and grind me into small enough pieces so that i can fit down the throat. As the teeth do their work, saliva mixes with the pieces of me, making me soft and moist. The saliva contains a chemical called salivary amylase, which starts breaking down complex carbohydrates, and another called mucin, which helps to soften the food. The amylase enzymes turn the starch molecules found in me into glucose. The glucose is used by cells to give people energy. oklahoma4h (2015) ptonthenet (2015) bbc.co.uk (2015) The tongue which is a muscle, works with me and saliva by pushing me around the mouth while you chew with your teeth. I am now a tiny bit of mushed-up food called a bolus when you’re ready to swallow I am pushed toward the back of your throat. Mandyparker (2015). Pharynx and oesophagus Copddysphagia (2015) Swallowing forces me through a tubular entrance which is called the pharynx this is responsible for passing me from the mouth to the oesophagus. The pharynx contains a flap-like valve called the epiglottis, this closes

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