&
PHYSIOLOGY
Histology
, ¢00 # ☒ ELECTIVE TTIISSSSUUEESS
4 General Characteristics Of Connective Tissue
-
Has varying degrees of vascularity ,
but more than epethelium
-
Connects body parts and tissues
'
Lots of extracellular matrix
'
common org in : mesenchyme embryonic cells .
Loose Areolar Connective Tissue
Chondro blasts collagen fiber Elastic fiber
support, protection lubrication .
Holds organs together
Immune defense
Found :
Skin -
Subcutaneous layer
'
Under the epithelia
surrounding organs
Base of mucous membranes
surrounding capillaries
Look for
colagen fibers -
inflexible ,
strong
Chondro blasts -
immature cells
Elastic fibers -
stretchy ,
add
cushioning
Fibers in all directions
Of Fibers Found
3
Types in Matricies
'
Cola yen : made of ropes of colagen proteins .
Found in tendons , cartilage ,
bones , & ligaments
. Reticular : collagen & glycoproteins formed in webs of reticular
fibers capillaries
supporting organs and
-
Elastic : stretchy . Found in the skin ,
heart , and vascular walls .
, Loose Adipose Connective Tissue
Protection / cushioning
stores
Energy
Found
subcutaneous layer of the skin
hypodermis
nuclei Adipocytes surrounding Mammary glands , breasts
surrounding / protecting organs
Loose Reticular Connective Tissue
Soft and springy
supports other cells Reticular fibers
Full of reticular fibers
moderately flexible strong
,
Found
Lymph nodes
Red bone marrow
Splean
Liver
Chondroblast
Fibroblast
Reticular fiber
cells in gaps between
Dense Regular Connective Tissue
the fibers
strong ! Lots Of Fibroblasts
Parallel collagen fibers
Resistant 2 directions
to
pulling in
Found
Tendons
Ate
Ligaments
}
Aponeuroses ( like tendons but ,
sheets , not ro
fibers In the sclera and retina of the
colagen eyes
regular
notice the squished nuclei are in rows -
- -
} not regular
Not skeletal (no striations)
are
'
outside
'
), not cardiac
,
not smooth
(no intercalated
( nuclei
disks or branching ) .