digestive system anatomy

the continuous tube that runs from the mouth to the anus. Together with associated organs such as the pancreas and the gall bladder, the alimentary canal makes up the digestive system. The lining of the alimentary canal is the surface through which nutrients are absorbed.

mechanical digestion by teeth; chemical digestion of starch by saliva

three pairs to produce saliva which dissolves food so it can be tasted saliva contains mucus that lubricates the mouth and food and holds food in a lump for swallowing also contains enzyme salivary amylase, which begins starch digestion

<p>back of mouth cavity- by moving upwards and backwards, the tongue pushes food into the pharynx for swallowing</p> Signup and view all the answers

<p>carries food from the mouth to stomach. it passes through diaphragm into abdominal cavity</p> Signup and view all the answers

<p>mechanical digestion by churning action, chemical digestion by pepsin, which begins protein digestion. In infants, rennin coagulates milk protein</p> Signup and view all the answers

<p>produces bile, which is stored and concentrated in gall bladder. bile emulsifies lipids in the small intestine (fruit ninja!)</p> Signup and view all the answers

<p>stores bile and releases it into the small intestine, where the bile emulsifies lipids</p> Signup and view all the answers

<p>first part of small intestine</p> Signup and view all the answers

<p>produces pancreatic juice containing enzymes for digesting proteins, lipids and nucleic acids</p> Signup and view all the answers

<p>about 6m long, its lining secrets intestinal juice, which contains many enzymes. The internal surface is lined with villi for absorption of digested food</p> Signup and view all the answers

<p>plays a role in immunity and stores useful bacteria</p> Signup and view all the answers

<p>first part of large intestine</p> Signup and view all the answers

<p>longest part of large intestine, absorbs water, minerals and vitamins.</p> Signup and view all the answers

<p>a band of circular muscle that regulates flow of material from stomach to duodenum</p> Signup and view all the answers

<p>final part of large intestine in which faeces are formed</p> Signup and view all the answers

<p>opening surrounded by the anal sphincter, a muscle that can be voluntarily controlled</p> Signup and view all the answers