CH.5 CONNECTIVE TISSUE ORGANIZATION Flashcards
What is the Function of Connective Tissue?
-Physical Protection, Support & Structural Framework, binding of structures, storage, transport, & Immune Protection.
Where does all the Connective Tissue derive from?
Embryonic Connective Tissue: Mesenchyme
What are the types of Connective Tissue?
-Adipose
-Blood
-Bones
-Cartilage
-Dense Connective
Loose Connective
What do all Connective Tissue have?
Protein Fibers & Ground Substance, cells
What is Extracellular Matrix?
Ground substances & protein fiber forms these together.
How are E.T Cells & C.T cells different?
C.T cells are not in direct contact with each other & usually are randomly scattered throughout the tissue.
What are the Two Classes of C.T. Cells
Resident Cells, & Wandering Cells.
What are Resident Cells & What is the Function?
-Stationary cells that permanently housed in C.T
-Help Support, maintain & repair the extracellular matrix.
What are the 3 types of Resident Cells & its Composition?
Fibroblasts: Flat Cells w/ Tapered ends, most abundant cells, produce fibers & ground substance.
Adipocytes: Fat cells, Appear in Small clusters
Mesenchymal Cells: Type of Embryonic stem cell in C.T
Fixed Macrophages: Large Irregular-shaped cells are derived from a type of WBC called Monocyte.
What are Wandering Cells, Function, & Types?
- Component of Immune System
- Repairs damaged extracellular matrix
-Type: Leukocyte: Protect body against harmful agents.
It continously wander throughout C.T
What are Protein Fibers?
-Strengthen & supports the C.T
What are Collagen Fibers, Function, what is their appearance & where are they seen?
- Unbranched, Cablelike, long Protein Fibers.
-Strong flexible & resistant to stretching.
-Appears white in flesh tissue/ smtimes pink.
-Seen in Tendons & Ligaments.
What are the three types of Protein Fibers?
- Collagen Fibers
-Reticular Fibers
-Elastic Fibers
What is the composition of Reticular Fibers, framework, & where are they seen?
Much thinner than Collagen fiber, however contains same protein as Collagen but are combined differently
-Form a branching, interwoven framework.
-Tough & flexible
-Seen abundantly in Stroma (Supportive framework) of organs (Lymph nodes, Spleen, & Liver.)
Composition of Elastic Fibers, Appearance, Function.
- Protein Elastin, Fibers branch rejoin & appear wavy.
-Yellow fibers in Fresh fibers. (Only visible in stained)
-Stretch & recoil back to shape.
-Abundant in skin, Arteries, & lungs,
How is Ground Substance produced and where is it mostly found?
-Molecular material produced by CT cells, & in a substance that CT cells & Protein fibers reside.
- May be viscous in blood, Semisolid(Cartilage), or Solid (Bone)
What is the Function of the Extracellular Matrix?
-Fluid, molecules & cells more through this as they move among cell, blood vessels, & Lymph vessels.
What are the 3 Large Molecules Ground Substance carries?
Glycoaminoglycans (GAGS), Glycoproteins,
& Proteoglycan
What are Glycoaminoglycans (GAGS)
-A large molecule found in Ground Substance.
-Polysaccharides that are attached to Amine Group.
-Affects Viscosity of Ground substance because of absorbing water &
- Negative charges attracting Cations, which results in water following Cation’s movement.
What are Proteoglycan?
-Larger substance, formed when GAGS is linked to a protein in the ground substance.
What are Glycoproteins rule in Ground Subtance?
- Acts as glue to bond C.T. cells & Fibers to ground substance.
What are the Two Types of Embryonic C.T?
-Mesenchyme & Mucous C.T.
- Both contain Stellate (Star shaped) or Spindle Shaped Mesenchymal Cells.
What is Mesenchyme CT?
- First type of CT do emerge in developing Embryo.
What is the Function of Mesenchyme C.T
Depends for where all other C.T types
