4.3 Connective Tissue

Question 1

Mesenchyme

Answer 1

Embryonic tissue of all connective tissue

Question 2

Main connective tissue categories

Answer 2

Bone, blood, cartilage, connective tissue proper

Question 3

All Connective tissues made up of

Answer 3

Cells & ECF (ground substance, proteins/fibers)

Question 4

Interstitial fluid

Answer 4

• Liquid occupying space between cells
• derived from blood
• dissolved sugars and proteins

Question 5

Collagen fiber is

Answer 5

Flexible and strong but no recoil

Question 6

Elastic fibers are

Answer 6

Flexible and stretchy (recoil)

Question 7

Reticular fibers

Answer 7

Web-like, like a more stiff collagen

Question 8

Connective tissue proper can be either

Answer 8

Dense or Loose

Question 9

Areolar tissue is

Answer 9

• loose arrangement of collagen and elastic fibers
• mostly matrix
• Has capillary beds
• macrophages (immune)
• mast cells - release histamine, inflammation

Question 10

Mast cells release

Answer 10

Histamine (thereby increasing capillary permeability)

Question 11

Adipose tissue

Answer 11

• areolar with adipocytes (cells containing lipids/triglycerides)
• insulation
• energy storage
• cushioning/protection

Question 12

Reticular Tissue

Answer 12

• web like collagen
• scaffolding for other cells to sit

Question 13

Dense regular connective

Answer 13

• long lines of collagen (regular arrange)
• ligaments and tendons
• very little matrix and blood supply
• sprains

Question 14

Dense irregular tissue

Answer 14

• tough fibrous slack (plastic bag)
• irregular arrangement of collagen
• outer covering of joints and organs

Question 15

Dense elastic tissue

Answer 15

• strong
• May stretch
• example: Aorta