The Digestive System Flashcards
What is in the digestive tract?
In the digestive tract there is the mouth, oesophagus, stomach, small and large intestines, rectum and anus.
What is the digestive system made of?
It is made up of digestive tract, liver, gall bladder and the pancreas.
What are the three main types of teeth? What do they do?
There are three main types of teeth. Molars, canines and incisors. The molars are flat, wide and are at the back of the mouth. Canines are the pointy teeth which grabs onto foods. The incisors are the front teeth. The purpose of teeth is to break food down.
Where does chemical digestion start?
The start of chemical digestion is in the mouth. When the food hits the saliva it starts the chemical digestion. The saliva is created by the salivary glands. When saliva is mixed with the food it is called bolus. Saliva helps the food travel down the oesophagus.
What is the oesophagus?
The oesophagus is a long muscular tube that connects the mouth to the stomach. When chyme travels down by the oesophagus, it is called peristalsis.
What is the stomach?
The stomach is an organ that helps break down chyme (broken down food). It breaks down the food chemically by using the enzymes the stomach creates. Stomach juices also mixes with the chyme.
What is the small intestine?
The small intestine is where the absorption of nutrients takes place. Chyme can take up to 5 - 6 hours to travel through the small intestine.
What is the large intestine?
The large intestine is where the absorption of water takes place. Food can take up to 14 hours in the large intestine.
What are the three organ that helps digest chyme but chyme does not travel in them?
The three organs are the liver, gall bladder and the pancreas. The pancreas makes pancreatic juices which neutralises stomach acid and make enzymes. The liver make bile which helps digest fats. The bile also neutralises stomach acid. Bile is stored in the gall bladder until it is reaches the small intestine. It goes to the small intestine by the bile duct.
What is mechanical digestion?
The process of mechanical digestion is when food is broken down physically by your teeth.
What is chemical digestion?
The process of chemical digestion is when food is broken down chemically by enzymes.
