Karteikarten
Connective tissue
Karten in diesem Stapel (25)
- 1What is the importance of histology- helps to understand normal function
- provides basis for understanding of pathology - 2What are the 5 stages of examination of tissues and briefly explain each stage1 - fixation - tissues fixed in formalin
2 - embedding - paraffin wax
3 - sectioning - microtome cuts 5um thick
4 - staining
5 - mounting - 3Give 2 problems associated with histology1 - 2D representation of 3D structure - may not be representative of tissue
2 - artefacts - PM change, air bubbles, variation in staining, folding, shrinkage, processing during sectioning - 4Which areas of the cell typically stain blue and whyDNA in nucleus and RNA in ribosomes
as they are actively synthesising protein - 5Complete the following sentence Blast cell types are ____ differentiated, whereas cyte cell types are _____ differentiatednot fully
fully - 6Name the 4 basic tissue types1 - connective
2 - epithelial
3 - muscular
4 - nervous - 7Give the 6 classifications of connective tissue1 - embryonic connective tissue
2 - connective tissue proper
3 - cartilage
4 - bone
5 - blood and lymph
6 - haemopoietic tissue - 8What is the composition of connective tissue- cells and extracellular material
- 9What are the compositions of extracellular material- amorphous or fibrous
- 10Give 3 examples of amorphous extracellular material- fluid - blood, lymph
- jelly like - humour
- solid - bone, cartilage - 11Give the 3 forms of fibrous extracellular material1 - collagen
2 - reticular
3 - elastic - 12Describe the characteristics of collagen- strong and flexible
- white fibrous tissue
- eosinophilic in H&E
- mostly type I collagen but can vary in specialised tissue
- random arrangement - 13Describe the characteristics of reticular fibres- fine network
- poorly stained in H&E
- RETICULIN STAIN - stains black
- composed of varying combinations of collagen and ECM glycoprotein
- not as strong as collagen - found where there is req to hold tissue together - 14What are the characteristics of elastic fibres- stretchable, elastic
- yellow, fibrous tissue
- eosinophilic in H&E
- VERHOEFFS STAIN - stains black - 15Give 5 functions of connective tissue proper1 - support
2 - protection
3 - connections in locomotor system
4 - holds tissue together
5 - energy storage - 16What are the 3 types of connective tissue proper1 - loose - higher ratio of cells to fibres
2 - adipose - many fat cells
3 - dense - lower ratio of cells to fibres - 17Give the 8 cell types that can be found in connective tissue proper1 - mesenchymal
2 - fibroblast
3 - fibrocyte
4 - macrophage
5 - adipocyte
6 - mast cell
7 - plasma cell
8 - melanocyte - 18Give the appearance and location of a mesenchymal cell- appearance - stellate
- many cytoplasmic process
- oval, round nucleus
- location - embryonic tissue - 19Give the appearance and function of a fibroblast- appearance - stellate or spindle shaped
- ovoid nucleus
- abundant basophilic cytoplasm
- synthesises and secretes collagen and ECM components
- differentiates into fibrocyte - 20Give the appearance of a fibrocyte- small flattened elongated cell
- elongated nucleus
- very little cytoplasm
- less active in secretion that fibroblasts - 21What is the function of a macrophage- derived from blood monocyte
- phagocytic cell
- produces lysosomal proteases, cytokines, prostaglandins
-mediates inflammatory process - 22What is the appearance and function of an adipocyte- accumulate fat droplets in cytoplasm
- droplets coalesce to form single large fat droplet - displace nucleus to side of cell
- energy storage, insulation and protection - 23What is the appearance of a mast cell- scattered
- low numbers in conn tissue
- often close to blood vessels
- cytoplasm filled with granules containing heparin, histamine, serotonin and proteases
- degranulate when tissue damaged - 24What is the appearance and function of a plasma cell- appearance - abundant basophilic cytoplasm
- negative image (Golgi apparatus) prominent
- eccentrically placed round nucleus
- chromatin radially arranged
- function - B lymphocyte actively producing antibody - 25What is a melanocytepigment cell
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- Beschreibung
- Veterinary bioscience - Cells to systems Karteikarten am Connective tissue, erstellt von Teresa Richards am 27/02/2018.
- Erstellt von
- Teresa Richards
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