Systemic mycosis (2) Candida Mrs. Dalia Kamal Eldien Msc in Microbiology lecture NO -11-
Supportive connective tissue Cartilage Mrs. Dalia Kamal Eldien MSC in Microbiology Lecture NO 5.
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Transcript of Supportive connective tissue Cartilage Mrs. Dalia Kamal Eldien MSC in Microbiology Lecture NO 5.
Supportive connective tissueCartilage
Mrs. Dalia Kamal Eldien
MSC in Microbiology Lecture NO 5
Objectives
• Revision of connective tissue classification • Definition of supportive connective tissue • Functions of supportive connective tissue • Definition of cartilage& it is functions• Constituents of cartilage• Types of cartilage
Connective tissue proper Fluid connective tissue Supporting connective tissue
Connective Tissue
Dense connectivetissue
Loose connectivetissue
Lymph Cartilage BoneBlood
What are the subcategories of the three main categories of connective tissue?
Specialized connective tissue is further subdivided into :Adipose connective tissueReticular connective tissueElastic connective tissueCartilage Supportive connective tissueBoneBlood Fluid connective tissueLymph
Classification of connective tissue
SUPPORTIVE CONNECTIVE TISSUE
DEFINITION The tissue that support and makes the framework of
body is called supportive connective tissue.
Types Supportive connective tissue is of two types:
1. Cartilage
2. Bone
Together bones and cartilage make up the skeleton.
SUPPORTIVE CONNECTIVE TISSUE
FUNCTIONS OF SUPPORTIVE CONNECTIVE TISSUE
• Support
• Protection(skull protect brain, vertebrate protect
the spinal cord, ribs protect the lungs)
• Storage of minerals (calcium and phosphorus)
• Site for Hematopoiesis (red bone marrow )
SUPPORTIVE CONNECTIVE TISSUE
SUPPORTIVE CONNECTIVE TISSUE
CARTILAGE: Is a flexible connective tissue found in many areas in
the body of humans and other animals, including the joints between bones, ribs, ear, nose, bronchial tubes and the intervertebral discs.
It is not hard and rigid as bone but is stiffer and less flexible than muscle.
Constituents of cartilage:• It is made up of cells called chondroblasts and
chondrocytes, (chondro - cartilage) and extracellular matrix.
• Extracellular matrix made up about 10% aggrecan, 75% water, and a mix of collagen fibers and elastic fibers in varying proportions based on local biomechanical needs of the organs in which it is located.
SUPPORTIVE CONNECTIVE TISSUE
• CARTILAGE• Features
– Flexible tissue
– Contains no blood vessels or nerves
– Matrix contains up to 80% water
– Cell type – chondrocyte
Chondrocytes
Chondrocytes
SUPPORTIVE CONNECTIVE TISSUE
• Function of cartilage
– Supports soft tissue of the body.
– It provides smooth sliding surfaces in the joints
to facilitate bone movement.
– Cartilage is essential for the growth of the long
bones before and after birth.
SUPPORTIVE CONNECTIVE TISSUE
• Types:
– Hyaline– Elastic– Fibrocartilage
SUPPORTIVE CONNECTIVE TISSUE
HYALINE CARTILAGE• This type of cartilage has a glassy appearance when
fresh, hence its name, as hyalos (is Greek word for glassy).
• Hyaline cartilage has widely dispersed fine collagen fibers, which strengthen it
• it is the weakest of the three types of cartilage.• Description
– Collagen fibers– Chondroblasts produce matrix– Chondrocytes lie in lacunae
SUPPORTIVE CONNECTIVE TISSUE
• Location
– Ends of long bones
– Costal cartilage of ribs
– Cartilages of nose, trachea, and larynx Location
SUPPORTIVE CONNECTIVE TISSUE
• ELASTIC• In elastic cartilage, the chondrocytes are found in
a threadlike network of elastic fibers within the matrix.
• Elastic cartilage provides strength, and elasticity, and maintains the shape of certain structure such as the external ear.
• Description– Similar to hyaline cartilage– More elastic fibers in matrix
• Function – Maintains shape of structure– Allows great flexibility
Elastic cartilge
SUPPORTIVE CONNECTIVE TISSUE
• Location
– Supports external ear
– Epiglottis
SUPPORTIVE CONNECTIVE TISSUE
• FIBROCARTILAGE This is the strongest kind of cartilage, because it has
alternating layers of hyaline cartilage matrix and thick layers of dense collagen fibers oriented in the direction of functional
• Description– Matrix similar, but less firm than hyaline cartilage– Thick collagen fibers predominate– Chondrocyte are lie in rows and isogenic groups
• Function– Tensile strength and ability to absorb compressive
shock
Fibro cartilge
SUPPORTIVE CONNECTIVE TISSUE
• Location
– Inter vertebral discs
– Discs of knee joint