Most diverse amp abundant tissue Main Role Strength against forces Protect organs Maintain organ shape Provide frame for muscle pull 2 Components Cells matrix Cells Matrix ground substance ID: 477846
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Slide1
Connective Tissues
Most diverse & abundant tissueSlide2
Main Role
Strength against forces
Protect organs
Maintain organ shape
Provide frame for muscle pullSlide3
2 Components
Cells + matrix
Cells
Matrix ~ ground substance
Fibers + “Protein Glue” + Water
Non-livingSlide4
Origin of ConnectiveTissue
Just notice that the cells, thus tissue, thus system originates from the mesoderm, as you learned previously Slide5
Connective Tissue Cells
Fibrocyte
Chondrocyte
Osteocyte
Hematopoietic stem cell (in bone marrow
) red blood cell makersSlide6
Types of Fibers
Reticular
keeps cells in place
Collagen
resists stretch
Elastic
allows stretchSlide7
Tissues Described By
:
Amount of fibers : # of cells
Arrangement of fibers in matrix
Type(s) of fiber in matrix
Ability, function or locationSlide8
Types
Connective proper
Cartilage
Blood
Bone Slide9
Connective Tissue Proper (1/4)
Loose
few fibers
: more
cells
Slide10
Loose & Adipose
Fiber type: almost none
Function: Energy storage, protection
Location
Under skin
Around organs
Behind eyeballs
Fastens kidneysSlide11
Loose & Reticular
Fibers: reticular
Function: scaffold for cell migration
Location:
lymph organs
Lymph nodes
bone marrow
spleenSlide12
Loose & Areolar
Fiber Type: collagen, reticular, elastic
Function: retains water; connects
epithelium to …?
Location
Under epithelia
Around organs
Surround capillariesSlide13
Dense
more fibers
:
few
cells
Connective Tissue Proper
(1/4)Slide14
Dense & Regular
Description
Parallel direction
collagen & some elastic fibers
High stretch strength
Poor vascular supply
Function
stress in one direction
Location
Tendons & ligaments
Bundle ends of musclesSlide15
Dense & Irregular
Description
Multi direction
collagen & elastic fibers
Resist stretch
Function
Withstand tension
structural strength
Location
Dermis of skin
digestive tract
joints and organsSlide16
Dense & Elastic
Description
Elastic fibers, very little collagen
High elasticity
Function
Allow stretch
Location
Alveoli of lungs
Arteries Slide17
*Cartilage (1/4)
3 types
Description
Avascular, no nerves
Matrix up to 80% waterSlide18
A. Hyaline (Glassy)
Description
a few
collagen fibers
Function
Resist repetitive stress
Support & reinforce
cushion
Location
End of long bones
Costal cartilage of ribs
nose, trachea, & larynx Slide19
B. Elastic
Description
More elastic fibers
A Few
collagen
Function
Maintain shape
Great flexibility
Location
external ear
EpiglottisSlide20
C. Fibrous
Description
Thick collagen fibers
Function
Tensile strength
Absorb compression
Location
Intervertebral discs
Pubis symphysis
Disc of knee jointSlide21
*Blood Tissue (1/1)
Description
Cells + fluid matrix + dissolved fibers
Function
transport gases,
nutrients,
&
waste
Location
blood vessels