| 1. Provides structural and metabolic support for other tissues
2. Protects
3. Transports
4. Repair (well vascularised)
5. Storage (for other cells, hormones, etc) | Connective tissue function |
| With few exceptions (tendons and ligaments), well vascularized | Connective Tissue well vascularized? |
| Migrate from blood as a response to specific stimuli (ex. allergies) | Wondering (transient) cells |
| Fibroblasts, adipocytes, chondroblasts, osteoblasts | Cells in CT |
| Mast cells, macrophages, lymphocyts, plama cells, eosinophils | Cells with defense function in CT |
| Inmature, produces | Blast |
| Mature, maintains | Cyte |
| Fibroblasts | Cell responsible for wound repair |
| DO NOT confuse with simple squamous epithelium. Adipocytes push the nucleus to the edge and most of the cell is filled with a lipid droplet | Adipocytes how to tell on histology slide |
| Pacman of cells - phagocytosis | Macrophage |
| Irregular - important cause it gives it the ability to branch out when needed | Macrophage shape |
| Granules exit (green dots) the plasma membrane and release to kill bacteria (allergic response) | Mast cells how do they work |
| Bigger, branched cytoplasm processes, oval nucleus | Fibroblast shape |
| Smaller, spindle shaped, elongated nucleus | Fibrocyte shape |
| rER, GA | Fibroblast abundant organells |
| 1. Fat storage
2. Energy
3. Insulation
4. Involved in the synthesis of hormones and growth factors | Adipocytes function |
| Loose connective tissue (adipose tissue) | Type of tissue where adipocytes are found |
| Both | Macrophage fixed or wondering cell? |
| Develop in bone marrow, become active in connective tissue | Mast cells develop in... and become active in... |
| blood thinner (red rash in allergies) | Heparin |
| why you get vasoconstriction response during allergies | Histamine |
| Histamine and heparin | Granules in mast cells blast... |
| Fibres and ground substance | Extracellular matrix in CT is composed of |
| Collagen (strength), elastic (stretch), reticular (structure) | Types of fibers in CT |
| Semisolid, viscous
Consists of water, complex carbohydrates and glycoproteins | Ground substance in CT composition |
| Glycoprotein in ground substance of CT
Attracts water into the cell and maintains its viability
Used in some beauty products | Hyaluronic acid |
| 1. Mechanical and structural support of the tissue
2. Biochemical barrier (mediates in and out) | Functions of ground substance |
| Pink | Using H&E stain, collagen appears |
| Collagen | Most abundant type of fibre in CT |
| Collagen protein | Protein that makes up collagen fibres |
| 5 | How many types of Collagen |
| Skin, lungs, urinary bladder | You can find elastic fibres in... |
| Collections of elastic fibres | Ellastic lamallae |
| Hair that's fallen on the ground (thin) | Ellastic fibres look like... |
| Closely packed and orderly | Collagen fibres look... |
| Reticular fibres | Way two lobes of liver, pancreas and spleen are connected is via... |
| You can't see them, but they are very thin | Reticular fibers look like... |
| Reticular fibers | Fiber that has high levels of glycoproteins |
| Embryonic mesenchymal CT | All connective tissue develops from |
| the umbilical cord | Mucosal CT exists in places such as |
