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Flashcards in Connective And Adipose Tissues Deck (32)
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1

What are the functions of connective tissue?

Connects cells to form tissues
Transports
Protection
Storage
Defence
Wound healing

2

What are the general connective tissues?

Cells, fibres and ground substance

3

What fibres are present in connective tissue?

Collagen, Reticular and Elastin

4

What is ground substance?

Viscous, clear substance with a slippery feel
Made of proteoglycans

5

What are Glycosaminoglycans? (GAGs)

Long chained polysaccharides that attracts water to from hydrated gel that permits rapid diffusion- in ground substance

6

What is a proteoglycan?

Core protein molecule and many GAGs attached

7

What is the extracellular matrix?

Complex extracellular structural network that consists of ground substance and fibres

8

What is loose connective tissue?

Many cells, sparse collagen fibres, abundant ground substance, viscous and gel like consistent, used for transport

9

What is dense connective tissue?

Few cells, many collagen fibres, little ground substance

10

Where is loose connective tissue?

located beneath epithelia, epithelium of glands, small blood vessels
- where pathogens can be challenged - swells

11

What is regular dense connective tissue?

Collagen fibres are arranged in parallel bundles and are densely packed between bundles and fibroblasts, withstand stress in a single direction

12

Where is dense regular connective tissue found?

Tendons, ligamens and aponeuroses

13

What is irregular dense connective tissue?

Collagen fibres are arranged in bundles orientated in various directions between bindles and fibroblasts, withstand stress in multiple directions

14

Where is irregular dense connective

Submucosa of intestine and deep layers of dermis

15

What do ligaments do?

Connect bone to bone

16

How are ligaments arranged?

collagen bundles are densely packed in parallel arrangement in fascicles, separated by loose connective tissue

17

What is the dermis?

Dense irregular connective tissue

18

What cells are present in connective tissue? (fixed)

Fibroblasts, Melanocytes, mast cells, macrophages, adipocytes, Mesenchymal stem cells

19

What cells are wandering immune cells?

Leucocytes, plasma cells, monocytes, eosinophils and basophils

20

What do Fibroblasts do?

Synthesise and secrete ground substance and fibres that lie in the ground substance

21

Why are fibroblasts important?

wound healing and scar tissue

22

What are macrophages?

Phagocytes which degrade foreign organisms and cell debris

23

What are Mast cells?

Contain histamine to increase blood vessel wall permeability, Heparin which is an anticoagulant and substances that attract eosinophils and neutrophils

24

What fibres are present in connective tissue?

Collagen, Reticular and Elastin

25

What is Reticulin?

Type III collagen, fibrils form fibres around muscle and nerve cells and within lymphatic tissues and organs

26

What is Collagen?

The most common protein in the body

27

What produces collagen?

Fibroblasts

28

Where are elastin fibres needed?

Dermis, artery wall, lungs and elastic cartilage sites

29

What is more common, white or brown adipose tissues?

White

30

Why are brown adipose tissue brown?

rich vascular supply and abundant mitochondria