Connective Tissue (Lecture 1) Flashcards
Connective tissue primary classes
connective tissue proper,
cartilage,
bone tissue,
blood
Connective tissue primary functions
Binding and support (bone and cartilage)
protection (bone and cartilage)
Insulation (adipose - connective tissue proper)
Transportation (blood)
Connective tissue characteristics
Common origin (developed from Mesenchyme) various Degrees of vascularity Extracellular Matrix
Extracellular matrix is largely _______ and separates ______ _____
and can ________ tension and weight
nonliving
living cells
withstands
Connective tissue: Structural elements
Ground substance
Fibers
cells
The extracellular matrix is made from
Fibers and ground Substance
What is Ground Substance? Is it structured or unstructured? is it fluid, semi-fluid, gelatinous, or calcified? what kind of molecules does it contain
and it acts as a _______ ______
An unstructured substance that fills space between cells.
It can be is it fluid, semi-fluid, gelatinous, or calcified.
it contains water and organic molecules.
Molecular sieve
Fibers: Collagen - whats its strength? Describe its protien.
strongest
Fibrous
Fibers: Collagen - why is it strong?
it has cross-linking fibrils and has high tensile strength
Fibers: Elastic- Describe its protein and its ability
Rubber-Like protein (elastin)
Stretch and recoil
Fibers: Reticular - Describe its protein and other features (forms what around what)
Collagenous fibre,
Forms networks witch surround small blood vessels and soft tissue organs.
Connective Tissue Structural Elements - Cells Immature and Mature forms name?
What connective tissue has a different name? what is it?
blast = immature Cyte = mature ex.
Blood; Hematopic Stem cell
Fibroblast is Immature cell
Fibrocyte is mature
Connective Tissue Proper - Loose: Areolar // Description// What is its matrix-like(ground substance) and what fiber types does it have?
Gel-Like with all three fiber types
Connective Tissue Proper - Loose: Areolar // Description // What cells?
fibroblasts, macrophages, mast cells and some white blood cells
Connective Tissue Proper - Loose: Areolar // Location and give an example.
Under epithelial tissue (supported by areolar)
EX. The inner layer of joint capsules (ex synovial joint capsule inner layer)
Connective Tissue Proper - Loose: Adipose // How much matrix? why?
not much, because adipose tissue is mostly cells (triglycerides or adipocytes)
Connective Tissue Proper - Loose: Adipose // Function
reserve food, insulation, support and protect organs
Connective Tissue Proper - Loose: Adipose // Location
under skin, around kidneys and eyeballs, in abdomen and breast
Connective Tissue Proper - Loose: Reticular // Description
Recticular fibers in loose ground substance
Connective Tissue Proper - Loose: Areolar // Function
wraps and cushions organs, its macrophages phagocytize bacteria; plays important role in information; holds and conveys tissue fluid
Connective Tissue Proper - Loose: Reticular // Function: the fibers form?
the fibers form a stroma (soft internal skeleton)
Connective Tissue Proper - Loose: Reticular // Function: what does the Stroma support?
white blood cells, mast cells, and macrophages
Connective Tissue Proper - Dense: Reticular // Location?
Lymphoid organs (lymph nodes, bone marrow and spleen
Connective Tissue Proper - Dense Regular // Description (ground substance amount, fiber types w rough percentages and main cell type)
mostly straight fibers not much ground substance. many Collagen fibers few elastin fibers main cell type is fibroblasts
Connective Tissue Proper - Dense Regular // Function
Attaches muscles to bones or to muscles; attaches bones to muscles and has a great tensile strength from force in one direction (slight elaciticty 20 percent elastic fibers)
Connective Tissue Proper - Dense Regular // Location
tendons, ligaments, aponeuroses
Connective Tissue Proper - Dense Irregular // Description (main cell type and fiber type and amounts)
Irregularly arranged collagen fibers; w some elastic fibers (20-30 percent) and major cell type is fibroblast
Connective Tissue Proper - Dense Irregular Function
withstand tension and extend in many directions; provides structural strength
Connective Tissue Proper - Dense Irregular Location
The dermis of the skin; Submucosa of the digestive tract and fibrous joint capsules of organs and joints
Connective Tissue Proper - Dense Elastic Description
80% elastic 20% collagen,
Connective Tissue Proper - Dense Elastic // Function
recoil of tissue following streatching; maintains pulsate flow of blood through arteries; aids passive recoil of lungs following inspiration
Connective Tissue Proper - Dense Elastic Location
Walls of large arteries, certain ligaments in the vertebral column and in walls of bronchial tubes
List the 3 Cartilage Types
Hyaline,
Fibrocartilage
Elastic
Hyaline Cartilage Matrix?
Firm
Hyaline Cartilage Function
Supports and reinforces, cushions resists compression
Hyaline Cartilage Location
End of long bones, costal cartilage, nose
Fibrocartilage Matrix?
Less firm then Hyaline
Fibrocartilage function
withstand tension and shock absorption
Fibrocartilage Location?
intervertebral discs, pubic symphysis, menisci
Elastic Cartilage Matrix
similar to hyaline
Elastic Cartilage Function
maintains shape but flexible
Elastic Cartilage Location
external ear
Bone types
compact and spoungy
Bone tissue Description (matrix, main cell types)
a hard, calcified, matrix containing collagen fibers
Osteocytes are the main cell type
Well vascularised
Blood Tissue Description (matrix+its name)
Red and white blood cells in fluid matrix (plasma)
Blood tissue Function
transport of respiratory gasses, nutrients, wastes and other substances
Blood tissue location
blood vessels
