Connective And Adipose Tissue

Question 1

What does general Ct contain?

Answer 1

cells, fibres and ground substance

Question 2

Name some fibres in CT

Answer 2

Collagen, reticular, elastin

Question 3

What are the properties of collagen?

Answer 3

Flexible with high tensile strength

Question 4

What is ground substance made of?

Answer 4

Proteoglycans (protein +GAG)

Question 5

What is the role of GAGs?

Answer 5

Attract water to make a hydrated gel

Rapid diffusion and resists compression

Question 6

What is ECM made of?

Answer 6

ground substance and fibres

Question 7

Name the types of CT

Answer 7

Dense (regular, irregular), Loose

Question 8

What type of CT has lots of collagen?

Answer 8

Dense

Question 9

Where would you find loose CT?

Answer 9

Beneath epithelia to facilitate diffusion

Question 10

What do tendons attach?

Answer 10

Muscle to bone

Question 11

What to ligaments attach?

Answer 11

Bone to bone

Question 12

What is an aponeurosis?

Answer 12

Flat sheet of regular CT

Adjacent layers arranges at 90 degrees to one another

Question 13

Advantage of irregular dense CT

Answer 13

Can resist forces in multiple directions

Question 14

Name some fixed cells in CT

Answer 14

Fibroblasts, melanocytes, mast cells, macrophage, adipose

Question 15

Name some wandering cells

Answer 15

Monocyte, basophil, leukocyte, plasma cell, eosinophil

Question 16

What do fibroblasts do?

Answer 16

Make ground substance

Question 17

What do myofibroblasts do?

Answer 17

Stimulate wound contraction

Question 18

What to mars cell granules contain?

Answer 18

Histamine to increase vascular permeability
Heparin
Substances to attract eosinophils and neutrophils

Question 19

Where are mast cells absent?

Answer 19

CNS

Question 20

What disease is cause by abnormal collagen 1?

Answer 20

Osteogenesis imperfecta

Question 21

What is another name for type 3 collagen?

Answer 21

Reticulin

Question 22

Where is type 4 collagen

Answer 22

Basement membrane

Question 23

What cell secretes pro collagen?

Answer 23

Fibroblast

Question 24

What is vitamin C required for?

Answer 24

Intracellular production of pro collagen

Question 25

Where can reticular fibres be found?

Answer 25

Lymph nodes

Question 26

What causes Marfans syndrome

Answer 26

Abnormal expression of fibrin gene causes abnormal elastic tissue

Question 27

What are the roles of white adipose cells?

Answer 27

Fuel reserve Thermal insulation Shock absorber

Question 28

Describe the structure of a white fat cell

Answer 28

Single fat droplet with nucleus at periphery

Question 29

Describe the structure of a brown fat cell?

Answer 29

Many lipid droplets with a central nucleus

Question 30

Why are brown fat cells brown?

Answer 30

Rich vascular supply and lots of mitochondria

Question 31

What process can brown fat cells perform?

Answer 31

Non shivering thermogenesis

Question 32

What is ghrelin?

Answer 32

Appetite stimulator from stomach

Question 33

What is leptin?

Answer 33

Appetite suppressor released from fat cells