TYPES OF AT
WHITE AT
BROWN AT
TYPES OF CARTILAGE
HYALIN CARTILAGE
CHARACTERISTICS OF ADISPOSE TISSUE
DISTRIBUTION
DISTINGUISHING FEATURES
FUNTIONAL CHARACTERISTICS
Subcutaneous fat
 Cytoplasm near the
 store fatty acids in
Thins: appearance of
triglycerides
nucleus contains a
areolar tissue
golgi complex,
 undergo continuous
Males: fat layer thickens
mitochondria, a small
turnover regulated by
Females: additional fat
amount of RER, and
several
deposited in the breasts
free ribosomes
histophysiological
Intra-abdominal fat
 termed as Yellow AT or
factors
Fat deposits of variable
yellow fat
 Released fatty acids
size surround blood and
Reason: dietary
lymphatic vessels in the
carotenoids accumulate in
omentum and mesenteries
the lipid droplet, making
suspended in the
the tissue yellow
abdominal cavity
 Less abundant than
 Multilocular adipose
 Many functional
white at all ages
tissue
capabilities same as
multiple small lipid
to white AT
droplets in its
 Metabolic activity is
adipocytes
more intense
 have a spheric,
 Numerous vessels
centrally located
supplying this tissue
nucleus
carry the heat to the
 Contain many
body
mitochondria – tan to
reddish-brown tissue
color is due to
chiefly mitochondrial
cytochromes
 Loose CT septa give
brown adipose tissue a
lobular appearance
like that of a gland
in histo sections
CELL TYPE
Chondrocytes
CHARACTERISTICS OF CARTILAGE TYPES
FIBER TYPE
GROUND SUBSTANCE
ORGANIZATION
 Matrix
 GAG’s – mostly
 Consistency of
contains
chondroitin
hyaline
thin fibril
sulfates and
cartilage
of type II
hyaluronic acid
results from
collagen
extensive
 Proteoglycan
cross-linking
 Their small
 Proteoglycan
size and
aggregates –
HISTOGENESIS
 Unilocular adipocytes
derive from mesenchymal
precursor cells that
resemble fibroblasts
 Numerous small lipid
droplets in the
cytoplasm signals the
transformation of these
cells into lipoblasts
 Accumulation of lipid –
small fuses until
single droplet
 Multilocular adipocytes
of brown fat derive
form mesenchymal
precursors that assume
an epithelial shape and
arrangement
 Multiple small fat
droplets that appear
during development do
not coalesce during
maturation
FUNCTIONS
Ability to
grow rapidly
while
maintaining
its rigidity
makes hyaline
cartilage an
LOCATION
The coastal
(rib)
cartilages,
most of the
laryngeal
cartilages,
the
their
refractive
index make
them
difficult to
distinguish
with the LM
covalently
linked to long
chains of
hyaluronic acid
by link
proteins
 Glycoprotein
 Tissue fluid
among its
components
 Matrix
immediately
surrounding the
chondrocytes
ideal fetal
tissue
ELASTIC CARTILAGE
chondroblasts and
chondrocytes
wavy bundles
of fibrils
that differ in
protein
composition
from both
elastin and
collagen
chondroitin
sulfate, and the
fibrous sheath is
called
perichondrium.
Perichondrium
surrounds the
elastic mass
provides
flexible
support
FIBROCARTILAGE
Fibrochondrocytes
Matrix
immediately
surrounding the
chondrocytes
resembles that of
HC and contains
some type II
collagen
collagen
fibres (Type I
collagen)
contains equal
amounts of
dermatan sulfate
and chondroitin
sulfate
No distinguishable
perichondrium
important in
attaching bone
to bone and
providing
restricted
mobility
cartilaginous
rings
supporting the
trachea, and
irregular
cartilage
plates in the
walls of the
bronchi are HC
found in the
auricle of the
external ear,
walls of the
external
auditory
canals and
auditory
tubes,
epiglottis,
and the
corniculate
and cuneiform
cartilages of
the larynx
Sites in
humans include
the annulus
fibrosus of
the
intervertebral
disks, the
symphisis
pubis, and
certain boneligament
junctions
CHARACTERISTICS OF
CONNECTIVE TISSUE
TISSUE TYPE
CELLS
FIBERS
GROUND SUBSTANCE
ORGANIZATION
FUNCTIONS
LOCATIONS