Chapter 4

Created by

MICHELLE DO

Cards (23)

Connective tissue is a filler between other tissues: a loose collection of cells separated by a significant area of noncellular matter
Embryonic CT 
derived from mesoderm
Mesenchyme 
disorganized with gel ground substance: embryonic tissue
Mucous tissue 
found in umbilical cord
known as Wharton's jelly
type I and III collagen
Reticulin  
Type III collagen
Ground substance  
liquid that cells/matrix are put in
Types of connective tissues 
CT proper (loose and dense)
specialized CT (i.e. adipose)
cartilage
bone
blood
Adult ground substance
water, glycosaminoglycans (GAGs), proteoglycans
Adult extracellular matrix (ECM)  
type I and III collagen, elastic fibers (elastin + fibrillin)
Fibroblasts 
derived from mesenchymal cells
build fibers and secrete matrix proteins
Macrophages 
resident (fixed) versus elicited (wandering)
eats things that aren't supposed to be there
Mast cells
have secretory granules/vesicles
cell used for degranulation: secretion
Adipocytes  
fat cells
empty: flat and malnourished
full: inflated and nucleus pushed to surface
Adipose tissue 
loose connective tissue: areolar tissue
White adipose tissue 
large hollow droplet of fat
used for extra energy
found in kidney, butt, arm, belly
Brown adipose tissue 
broken into subsections
brown because of blood supply
stores energy to warm body
found in heart and baby fat
Reticular tissue 
thin branched fibers
found in lymphatic tissues + bone marrow
Elastic tissue 
allows tissues to stretch and snap back
3 types of cartilages
hyaline
elastic
fibrocartilage
Hyaline cartilage 
used to form embryonic skeleton
has perichondrium
found in nose, ribs, end of long bones, sternum
Articular cartilage 
no perichondrium
doesn't have fibers because wants to be smooth
nourished by synovial fluids
Elastic cartilage 
type II collagen + elastin
Fibrocartilage 
type I and II collagen
resembles dense regular CT with chondrocytes
will not see distinct perichondrium