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Flashcards in Organisation in The Body Deck (16)
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1
Q

Define an organ?

A

A structural grouping of tissues that perform a specific function(s).

2
Q

Define a tissue?

A

A collection of similar cells that perform specialised functions.

3
Q

Define a cell?

A

The basic unit of living matter –> building block.

4
Q

Define an organ system?

A

A group of organs that work together to carry out particular tasks.

5
Q

What are the 4 major tissues in the body?

A

1) . Epithelial tissue.
2) . Connective tissue.
3) . Muscle tissue.
4) . Nervous tissue.

6
Q

Epithelial and connective tissue is classified according to their…

A

Structure.

7
Q

Muscular and nervous tissue is classified according to their…

A

Structure and function.

8
Q

What are the 2 different types of epithelial tissue?

A

1) . Simple.

2) . Stratified.

9
Q

What are the features of epithelial tissue?

A
  • Lining layer of organs.

- Grow and divide rapidly.

10
Q

What is the function of epithelial tissue?

A

Allows the movement of cells.

11
Q

What separates the epithelial layer and the underlying tissue?

A

Basement membrane.

12
Q

Does epithelial tissue lack blood supply?

A

Usually –> nutrients and oxygen diffuse from the underlying tissue.

13
Q

What does connective tissue consist of?

A

A matrix of a variety of cells and fibres.

14
Q

What are the 2 types of fibres within the matrix of connective tissue?

A

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.
15
Q

What is the main role of connective tissue?

A
  • Controlling the movement of substances as they pass from blood to cells.
  • The movement of cells during embryological development and wound healing.
16
Q

What are the major cell types found in connective tissue?

A

1). Fibroblasts =

made up of non-stretchy collagen and elastic elastin.

2). Mast cells =

prevents blood clotting.

3). Macrophages =

engulf phagocytose pathogens, ageing cells, damaged cells and cancer cells.