B3 Organisation And Digestion Flashcards
Organelles
Smaller parts of cells
Tissue
A group of cells the same type
Organ
Group of cells working together
Organ system
Group of organs that work together to perform one or more functions
Examples of cells
Blood cells
Stem cells
Sperm cells
Examples of tissues
Epithelial tissue
Muscle tissue
Nervous tissue
Examples of organs
Brain
Lungs
Heart
Name all the organs in the digestive system
Mouth, esophagus, stomach, small intestine, large intestine, rectum and anus
Function of mouth
The teeth rip, chew and grind the food into smaller pieces
Function of large intestine
Excess water is absorbed from the food
Function of small intestine
Breaks down nutrients
Absorbs nutrients
Gets rid of unnecessary components
Function of liver
Bile in the liver neutralises stomach acid and emulsify fats
Function of pancreas
Protease, lipase and amylase are released into the small intestine to help digest the food
Function of rectum
Where the faeces are stored before passed out of the anus
Which food molecules are polymers
Proteins polymers of amino acids and nucleic acid
Tissues that make up organs
Epithelial tissue
Connective tissue
Muscle tissue
Nervous tissue
How the small intestine is adapted to its function
Villi and microvilli that increase surface area
Why the cells of multicellular organisms are organised into tissues, organs and organ systems
To support the life processes of cells to keep the organism alive