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what are the 4 variable tissue types that are named in the power point?
- fibrous
- cartilage
- bone
- blood
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what are its functions?
- Connects- skin is attached to underlying muscles, & muscle to bone
- Support and Protection- (physical and immune) skeletal cover, WBCs in the connective tissue capture invading bacteria
- Links & Fills- spaces between cells & organs
- Stores- energy and produces heat—fat generates heat
- Movement- and transport of materials—bones cartilage
- Production- of blood cells &transports – bone marrow & substances reached everywhere through the flowing blood
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flat spindle shaped –gives rise to fibers and ground substance that forms the matrix and then differentiate into fibrocytes
cell of fibrous connective tissue
Fibroblasts
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arise from monocytes .They phagocytize foreign material they are localize in certain areas or wander to the site of infection through tissue
cell of fibrous connective tissue
Macrophages
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wander in search of bacteria in the blood
cell of fibrous connective tissue
Neutrophils( WBCs ) in the blood
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arise from WBCs to secrete antibodies—seen at sites of inflammation & in the walls of intestines.
cell of fibrous connective tissue
Plasma cells
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present in blood vessels that supply connective tissue and produce heparin which inhibits clotting and histamine which dilates blood vessels
cell of fibrous connective tissue
Mast Cells
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Seen in clusters in the fibrous connective tissue, they store triglycerides. When they are in large amounts it is called adipose tissue.
cell of fibrous connective tissue
Adipocytes or fat cells
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What are the fibers of connective tissue
- Collagen fibers (large)
- Elastic fibers (medium)
- Reticular fibers (fine) or small in other words
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25% of body proteins white fibers made of collagen protein,
tough, stretch resistant, yet flexible
mostly seen in the matrix of cartilage &bone.
tendons, ligaments and deep layer of the skin
Collagen fibers (large)
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thin branching fibers of elastin protein
stretch and recoil like rubber band (elasticity)
skin, lungs and arteries stretch and recoil
Elastic fibers (medium)
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thin, collagen fibers coated with glycoprotein
framework in spleen and lymph nodes
Reticular fibers (fine) (in other words small)
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3 types of LOOSE connective tissue
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3 types of DENSE connective tissue
- dense regular connective Tissue
- dense irregular connective Tissue
- Elastic connective Tissue
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3 types of CARTILAGE
- Hyaline Cartilage
- Fibro Cartilage
- Elastic Cartilage
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2 types of LIQUID connective tissue
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Loose arrangement of fibers and cells in abundant ground substance
Underlies all epithelia, between muscles, passage ways for nerves and blood vessels
"airy"-> open space
Areolar Tissue
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Seen in serous membranes
Areolar Tissue
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Loose network of reticular fibers and cells
Forms supportive stroma (framework) for lymphatic organs
Reticular Tissue
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Found in lymph nodes, spleen, thymus and bone marrow
Reticular Tissue
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Empty-looking cells with thin margins; nucleus pressed against cell membrane
Function:Energy storage, insulation, cushioning
- Adipose Tissue
- Adipose-clusters of fat cells (adipocytes)
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subcutaneous fat and organ packing
brown fat (hibernating animals) produces heat
Adipose Tissue
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Densely, packed, parallel collagen fibers
compressed fibroblast nuclei
hold bones together and attach muscles to bones
Dense Regular Connective Tissue
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Found in: Tendons and ligaments
Dense Regular Connective Tissue
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Densely packed, randomly arranged, collagen fibers and few visible cells
withstands stresses applied in different directions
Dense Irregular Connective Tissue
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Found in: deeper layer of skin; capsules around organs
Dense Irregular Connective Tissue
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found in the stroma of the lungs and in the walls of the large arteries
allow the tissue to be stretched and then regain its OG size & shape (recoil)
fibroblasts are found in the spaces between the elastic fibers
Elastic Connective tissue
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made of clear glass like fine collagen fibers. Most have a sheath called perichondrium around them
Hyaline cartilage
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coarse large bundles of collagen fibers –no perichondrium
fibrocartilage
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stretchable elastic fibers within a perichondrium
elastic cartilage
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Rubbery matrix; few dispersed collagen fibers; clustered chondrocytes in lacunae
provide smooth surface for joint movement, supports airway, flexibility
hyaline cartilage
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found at the ends of bones at movable joints; sternal ends of ribs; nose, supportive material in larynx, trachea, bronchi and fetal skeleton
most predominate cartilage
Hyaline cartilage
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large with extensive collagen fibers (never has perichondrium)
Resists compression and absorbs shock
fibrocartilage
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found in pubic symphysis, meniscus and intervertebral discs, fontanelles
fibrocartilage
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lots of elastic fibers ,has a perichondrium.
Function: Provides flexible, elastic support
similar to hyaline
Elastic cartilage
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found in external ear and epiglottis, eustation tube
elastic cartilage
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spongy in appearance
delicate struts of bone
covered by compact bone
found in heads of long bones
Spongy bone
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solid in appearance
more complex arrangement
cells and matrix surround vertically oriented blood vessels in long bones
Compact bone
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Calcified matrix in lamellae around central canal
Osteocytes in lacunae between lamellae
Skeletal support; leverage for muscles; mineral storage
Bone tissue (compact bone)
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Only liquid connective tissue.
Ground substance is the plasma
variety of cells
found in the heart and blood vessels !
Blood connective tissue
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Plateletes
liquid connective tissue
small cells important in the clotting mechanism &secrete growth factor helps growth of blood vessels
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RBCs
liquid connective tissue
Oxygen carrying pale pink cells
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WBCs
liquid connective tissue
- takes care of defense mechanism
- 5 types-neutrophils, lymphocytes, basophils, eosinophils & monocytes
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