Connective Tissue Flashcards
What are the two types of cells found among fibrous CT? Which produces the ECM?
Fibroblasts (ECM)
Immune cells
What produces collagen?
Fibroblast cells (fusiform)
Immune cells found in connective tissues:
Mast cells
Macrophages
Lymphocytes
What are macrophages in CT called and what are their roles?
Histiocytes
Eat foreign particles
Antigen presenting cell
Induce collagen production (healing) from fibroblast
How do you visually identify histiocytes/macrophages in connective tissue?
Large cell
Elliptical nuclei
“Frothy” (granulated) cytoplasm
Lymphocytes found in connective tissue (most commonly observed?):
T lymphocytes
B lymphocytes (plasma cells)
NK cells
How do lymphocytes look under slides?
nucleus»cytoplasm (nucleus takes up most of the space); small in size
During second invation, plasma cells release __ which bind to mast cells
IgE
ECM consists of (2):
collagen + ground substance
The most common type of collagen is type __.
Collagen that forms BM is type __.
Collagen that forms the reticular fibers is type __.
Collagen that forms cartilage is type __.
I
IV
III
II
Type __ collagen is found in the reticular fibers of open-type circulation organ.
III
Elastic fibers are composed of __
elastin
BM is made of type __ collagen
IV
Adipose tissue is part of the ___ layer.
hypodermis
Connective tissue classification:
how tightly packed
how well arranged in single direction
density
regularity
