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Flashcards in 4.2 lab - connective tissue Deck (22)
1

will a correct exam answer choice ever be "fat" or "adipocyte" ?

no - must always specify unilocular vs multilocular

2

T/F all fibers stain eosinophilic

mostly true. must use special stains to bring out reticular (silver) and elastic fibers (vaerhoeff's)

3

loose vs dense irregular connective tissue, which will likely have deeper eosinophilic stain?

dense - more eosinophilic fibers

4

explain the occasional appearance of an island of loose connective tissue within the epithelial epidermal layer of the skin

plane of section

5

what is one place that loose and dense irregular connective tissue appear side-by-side?

skin

6

papillary dermis

layer of looser connective tissue in skin (immediately below epidermis, superficial to reticular dermis)

7

reticular dermis

layer of denser connective tissue in skin (below both epidermis and papillary dermis)

8

are melanocytes found in the papillary dermis?

no, melanocytes are found at the basal end of the epidermal epithelium

9

the fibrous component of most loose and dense connective tissue is...

type I collagen

10

the tunica intima (inner layer) of most arteries is a good place to find what kind of fibers?

elastic fibers
(composing the inner elastic lamina)

11

on H&E, how will elastic fibers stain, in comparison to collagen I fibers?

slightly lighter (less eosinophilic)
much thinner fibers
best visualized with special vaerhoeff's stain

12

how is a spread preparation different from the usual slide preparation?

multiple cell layers (not just one)

13

between elastic and reticular fibers, which is more spaghetti web-like and which is more root-like?

-elastic: spaghetti web - not anchoring cells just filling space for stretching between structures
-reticular: roots - like roots burrowing between and among cells, providing scaffolding and structure

14

what are 2 characteristics of organs in which you might expect to find reticular fibers?

-composed chiefly of migratory cells (e.g. lymph nodes or spleen)
-or-
-organization is such that connective tissue support should be minimized (e.g. lung, liver)

15

what is the main fiber type found in embryonic mesenchymal tissue?

type III collagen, reticular fibers

16

type IV collagen forms part of what layer of the basement membrane?

lamina densa

17

in what organ is the epithelial basement membrane thicker than usual?

trachea
to block travel of nasty air stuffs to deeper layers

18

what protein is a major component of the lamina lucida layer of basement membranes?

laminin

19

why do basement membranes stain deep pink with PAS?

laminin, a glycoprotein, is a major component of the lamina lucida

20

what is the name for the microvilli border of kidney tubules?

brush border

21

in the kidney, this collection of tissue is the first blood filter

the glomerulus

22

where can you always find loose connective tissue?

lamina propria