6.1 Digestion Flashcards
Define aliementary canal
Organs food actually passes through
Define accessory organs
Organs which aid in the digestion of food
Name the alimentary canal
Stomach
Small intestine
Large intestine
(rectum/anus)
Name the accessory organs
Salivary gland
Liver
Gall bladder
Pancreas
Where does mechanical digestion occur?
Mouth (chewing)
Stomach (churning)
Via which processes can food move through the body?
Peristalsis
Segmentation
Describe peristalsis
Longitudinal contractions to push food through the digestive system
Describe segmentation
Muscles contract and relax in segments creating bi directional motion in a circular motion
Which food moving process is faster?
Peristalsis
What is the function of bile?
Bile salts interact with fat globules to emulsify them
Where does salivary amylase work?
Mouth and oesophagus
What does salivary amylase break down?
Starch -> Maltose
Where does protease work?
Stomach
Where does stomach acid work???????!!!
STOMACH (shocking)
What does stomach acid do?
Chemical digestion
Where are bile salts produced?
Liver and stored in gall bladder
What is the function of bile salts?
Emulsification of lipids
Where is amylase produced (digests maltase)?
Pancreas
(works in the small intestine)
Where is lipase produced?
Pancreas
(works in the small intestine)
Where is endopeptidase produced?
Pancreas
(works in the small intestine)
Where is nuclease produced?
Pancreas
(works in the small intestine)
Where are bicarbonate ions produced?
Pancreas
(works in the small intestine)
What digestive enzymes are present in the small intestines?
A plethora of membrane bound enzymes
What is absorbed by the large intestine?
Water and mineral
