Connective Tissue

Question 1

2 Types of Connective Tissue Proper

Answer 1

• Loose

- Dense

Question 2

4 Types of Connective Tissue

Answer 2

• Connective tissue proper
• Cartilage
• Bone
• Blood

Question 3

Loose Connective Tissue Prop.

Answer 3

large space between fibres filled with ECM

Question 4

Dense Connective Tissue Proper

Answer 4

thick fibre networks containing high number of collagen, small ECM

Question 5

2 Types of Dense Connective Tissue

Answer 5

• Regular

- Irregular

Question 6

Regular Dense

Answer 6

• fibres arranged in same plane

- typically found in tendons and ligaments to resist forces in opposite directions

Question 7

Irregular Dense

Answer 7

• arranged in random network

- typically found in joint capsules resist impact in many directions

Question 8

3 Components of ECM

Answer 8

• Amorphous Ground Substance
• Protein Fibers (Collagen, Elastic, Reticular)
• Tissue Fluid

Question 9

Amorphous Ground Substance

Answer 9

• contains glycoproteins, proteoglycans, glycosaminoglycans, water
• all substances entering/leaving cell must pass through

Question 10

Type I Collagen

Answer 10

most abundant, found in bones, tendons, connective tissue proper, ligaments, fibrocartilage

Question 11

Type II Collagen

Answer 11

hyaline and elastic cartilage, very thin fibrils

Question 12

Type III Collagen

Answer 12

reticular fibres, often associated with type I

Question 13

Elastic Fibers

Answer 13

can be stretched to 150% original length without damage

Question 14

Connective Tissue Cell Classification

Answer 14

• Fixed Cells

- Transient Cells

Question 15

Fixed Cells

Answer 15

• perform their function and remain in place within the connective tissue
• Fibroblasts, Adipose, Mast Cells

Question 16

Transient Cells

Answer 16

• originate in bone marrow and circulate bloodstream to perform functions
• Macrophage, Plasma Cells

Question 17

Fibroblasts

Answer 17

• most common cell in connective tissue
• synthesize collagen, reticular and elastic fibres and ground substances in ECM
• fibrocyte when mature

Question 18

Adipose Cells

Answer 18

squished nucleus and store fat

Question 19

2 Types of Adipose Cells

Answer 19

• White

- Brown

Question 20

White Adipose

Answer 20

formed by uniocular fat cells (single large droplet)

Question 21

Brown Adipose

Answer 21

formed by multiocular fat cells (small multiple droplets allowing storage of more fat)

Question 22

Mast Cells

Answer 22

• can also be transient

- largest fixed cells, contain granules of histamine and heparin important for allergic reactions

Question 23

Macrophages

Answer 23

originate from monocytes

Question 24

Plasma Cells

Answer 24

• scattered throughout connective tissue

- found in areas with inflammation where they act to secrete antibodies