Organisation in The Body Flashcards
Define an organ?
A structural grouping of tissues that perform a specific function(s).
Define a tissue?
A collection of similar cells that perform specialised functions.
Define a cell?
The basic unit of living matter –> building block.
Define an organ system?
A group of organs that work together to carry out particular tasks.
What are the 4 major tissues in the body?
1) . Epithelial tissue.
2) . Connective tissue.
3) . Muscle tissue.
4) . Nervous tissue.
Epithelial and connective tissue is classified according to their…
Structure.
Muscular and nervous tissue is classified according to their…
Structure and function.
What are the 2 different types of epithelial tissue?
1) . Simple.
2) . Stratified.
What are the features of epithelial tissue?
- Lining layer of organs.
- Grow and divide rapidly.
What is the function of epithelial tissue?
Allows the movement of cells.
What separates the epithelial layer and the underlying tissue?
Basement membrane.
Does epithelial tissue lack blood supply?
Usually –> nutrients and oxygen diffuse from the underlying tissue.
What does connective tissue consist of?
A matrix of a variety of cells and fibres.
What are the 2 types of fibres within the matrix of connective tissue?
1). Collagen =
- protein that provides strength and flexibility.
- e.g. a tendon.
2). Elastin =
- protein that provides distortion and restoration to its original shape.
- e.g. blood vessel walls.
What is the main role of connective tissue?
- Controlling the movement of substances as they pass from blood to cells.
- The movement of cells during embryological development and wound healing.
