Connective Tissue

Question 1

Connective tissue

Answer 1

• forms a framework upon which epithelial tissue rests within which nerve tissue and muscle tissue are embedded
  -blood vessels and nerve tissue travel through it
• it functions not only as a mechanical support for other tissues but also as an avenue for communication and transport among other tissue
• two groups: connective tissue proper & specialized CT

Question 2

Cells

Answer 2

• unspecialized connective tissue
• the main cells is the fibroblast

Question 3

Fibroblast

Answer 3

• synthesizes the extracellular matrix and collagen
• responsible for the secretion of the intercellular elements
• smaller and darker than the nuclei of smooth muscle cells
• little cytoplasm, structural framework (stoma) for animal tissues
  (Trachea)

Question 4

Macrophage

Answer 4

• found in unspecialized connective tissue (loose)
• smaller, rounder nucleus and denser than the fibroblast
• visible cytoplasm, found in skin

Question 5

Eosinophils

Answer 5

• have bright red grandiose in their cytoplasm
• a large blood cell with a bilobed nucleus
• one of several white blood cells that support the immune system

Question 6

Mast cells

Answer 6

• small, centrally placed nucleus
• cytoplasm filled with find, closely packed, and dense-staining granules
• closely packed with eosinophils
• histamine granules around small circles that surround the mast cell

Question 7

Fibers

Answer 7

• collagen (acidophillic= pink with H&E stain) is the glue
• elastic fibers (also stained pink) are very elastic
• reticular fibers (thinnest and like a soccer net which means things can get though it sometimes)

Question 8

Collagen

Answer 8

• acidophilic (stains pink with H&E)
• has wispy or rope-like appearance
• fibroblasts are responsible for its secretion

Question 9

Elastic fibers

Answer 9

• found in urinary bladder
• underneath the transitional epithelium
• form brightly stained pink, very refractive and contrasting strongly with the dull pink collage nous fibers

Question 10

Ground substance

Answer 10

• composed mostly of mucopolysaccharide (glycoaminoglycan aka GAG) which is hyaluronic acid
• washes out in most histological functions
• supports the CT and is the gelatinous material that holds cells and structures in place
• found in areolar spread

Question 11

Loose (areolar) collangenous CT

Answer 11

• areolar refers to the small spaces filled with ground substances
• unspecialized CT; found in the cervix or vagina
• light-staining CT

Question 12

Dense collagenous CT

Answer 12

• found in skin, sole of foot
• capsules of organs
• forms a tough capsule around the spleen

Question 13

Reticular tissue

Answer 13

• found in areas through which liquid must percolate
• can be seen in lymph nodes, spleen and in the laminate proprietor of the digestive tract
• held in place by reticular fibers

Question 14

White fat

Answer 14

• cellular connective tissue (specialized)
• looks like soap bubbles or singlet rings
• becomes modified storage cells
• cytoplasm is reduced to a thin rim around this mass

Question 15

Brown fat

Answer 15

• each containing numerous small lipid droplets, occupy the central region of the image
• the brown fat is surrounded by ordinary white fat with each advocate containing a single (unilocular large lipid droplet)
• rare in humans but plentiful in rodents