Tissues And Organs Flashcards
What is a stomach cell
A specialised cell
What is a tissue
A group of specialised cells, of the same type, working together to form a common organ
What is an organ made of
Tissues
What is the organ system
Difficult organs combined
What do tissues do ?
Tissues work together to digest food in the stomach
Which are the three types of tissue in the stomach ?
Epithelial
Muscular
Glandular
What is the role of epithelial tissue
Covers the outside of the stomach and acts as stomach lining
What is the role of muscular tissue
The tissue contracts and causes the wall of the stomach of move which then churns up food
What is the role of the glandular tissue
It produces acid and enzymes which sterilise the food and kill bacteria. It’s then poured into the stomach cavity to help digest food
What is digestion ?
Large food molecules being physically and chemically broken down into smaller, more useable and absorbable food, which can then be used for growth repair and energy.
What order does food get digested in ?
Mouth Oesophagus Stomach (Liver) (Pancreas) Small intestine Large intestine Colon Rectum
What is the role of the mouth in digestion
Physically breaks down food with teeth
What is the role of the oesophagus in digestion
Connects the mouth to the stomach
What is the role of the liver in digestion
Stores sugar and produces bile
What is the role of the pancreas in digestion
Produces digestive enzymes and insulin
What is the role of the small intestine in digestion
Absorbs food into the blood stream
What is the role of the large intestine in digestion
Absorbs water into the blood stream
What is the role of the rectum in digestion
Stores feaces
How is the small intestine adapted to its function
Because it is where all the enzymes are present. It is adapted as it is covered in Villi to give it a large surface area, it has a thin layer of cells and a good blood supply
What’s the role of xylem (plants)
Transports water and nutrients (known as transpiration)
What is the role of phloem
Transports sugars ( knows as translocation)
Is xylem dead and hollow or a living cell contains sieve plates
Dead and hollow
Is phloem dead and hollow or a living cell contains sieve plates
It’s a living cell contains sieve plates
Name the four features of xylem
Dead and hollow cells
One-directional transport
Transports minerals
Transports water
