Connective tissue questions

Question 1

Vitally stained with trepan blue

Answer 1

Macrophages

Question 2

The most common CT cell

Answer 2

fibroblast

Question 3

Derived from B lymphocytes

Answer 3

Plasma cells

Question 4

Have heparin-containing granules

Answer 4

Mast cells

Question 5

Can serve as stem cells in adult tissue

Answer 5

Mesenchymal cells

Question 6

Often found around venules

Answer 6

Mast cells

Question 7

Secrete immunoglobulins

Answer 7

Plasma cells

Question 8

Selectively stained by silver

Answer 8

reticular fibers

Question 9

Allow stretch and recoil of blood vessels

Answer 9

Elastic fibers

Question 10

Composed of type III collagen

Answer 10

reticular fibers

Question 11

Composed of type I collagen

Answer 11

Collagen fibers

Question 12

The most abundant fiber type in lymphoid tissues

Answer 12

reticular fibers

Question 13

contain the amino acids desmosine and isodesmosine

Answer 13

Elastic fibers

Question 14

Form the largest diameter fibers in loose CT

Answer 14

collagen fibers

Question 15

What are the three basic components of all types of connective tissue?

Answer 15

Fibers( with exception of blood)
Ground substance
Cells

Question 16

Compare multilocular and unilocular fat with respect to occurrence, function, and structure

Answer 16

Unilocular- yellow/white adipose tissue
-cells with single large droplet of fat
more abundant than multi

Multilocular- brown adipose tissue

• cells with many lipid droplets
• abundant mito and capillary (brown)
• Primarily in fetus

Both- develop from undifferentiated mesenchymal cells via lipoblasts

Question 17

Connective tissues of the head, unlike most areas of the body, are derived from what embryonic cell type?

Answer 17

Cranial neural crest cells

Question 18

Compare dense regular and dense irregular connective tissue in terms of abundance, location, cellularity, vascularity, and regenerative abilities

Answer 18

Dense regular- rope like arrangement of fiber bundles
-found in tendons/ligaments/cornea

Dense irregular- fabric like arrangement
-form most organ capsules/periosteum/ dermis of the skin

Both
-mature fibroblast– fibrocytes predominant cell type

Question 19

List the 3 main fiber types found in connective tissue and compare them in respect to size, staining with H &E, staining with silver, locations and functions

Answer 19

Collagen fibers- Large

• Made of type I collagen
• 3 groups- fibril forming/linking-achoring/sheet forming

Elastic fibers- medium

• protein elastin
• picro-orcin and resorcin fuchsin stains
• arterial walls/lung tissue/vocal ligaments/spinal cord ligaments

Reticular fibers- small

• collagen type III
• stains black with silver salt
• Fibroblasts/reticular cells/schwann cells/smooth muscle cells