B3- Tissues and Organs

Question 1

Examples of tissues, organs and organ systems:

Answer 1

Tissues are a group of cells working together- muscular tissues to carry out certain functions: contract and relax

Organ: group of tissues working together to carry out a certain function.
E.G stomach: muscular tissue to churn the food, glandular tissue to produce digestive enzymes, epithelial tissue which covers outside of the stomach

Organ system: circulatory system, digestive system

Question 2

What is the point of having a digestive system?

Answer 2

molecules in food are insoluble and they need to be broken down to form smaller insoluble molecules which the cells can digest

Question 3

What is the role of the pancreas in the digestive system?

Answer 3

-makes and releases digestive juices containing enzymes to break down food

Question 4

What are the adaptions of the small intestine?

Answer 4

• large SA and villi
• good blood supply
• short diffusion pathway
• muscular walls squeeze undigested food from the large intestine.

Question 5

What are adaptions of the large intestine?

Answer 5

-water absorbed from undigested food forms faeces

Question 6

What is the role of the liver?

Answer 6

-produces bile