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Alle Oberthemen / Medicine / Microanatomy

Microanatomy: Connective Tissue (52 Karten)

Sag Danke
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Where does connective tissue originate?
From mesenchymal tissue from mesoderm of embryo.
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What does connective tissue actually do?
It forms a continuum with epithelial tissue, muscle, and nervous tissue.
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What connective tissue cells originate from undifferentiated mesechymal cells?
Chondrocytes
Adipocytes
Fibroblasts
Osteocytes
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What connective tissue cells originate from Hematopoetic cells?
Plasma Cells
RBCs
Macrophages
Osteoclasts
Megakaryocytes
Mast cells
Basophils
Eosinophils
Neurophils
5
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What is the parenchyma?
The functional components of an organ.
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What composes the extracellular matrix of connective tissue?
Ground substance and fibers
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In general, what two categories of cells compose connective tissue?
Resident cells and Transient cells.
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What does the ground substance of the extracellular matrix of connective tissue do?
It resists forces of compression.
9
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What makes up the ground substance of the extracellular matrix of connective tissue?
Glycosaminoglycans
Proteoglycans
Glycoproteins
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What types of fibers are in the extracellular matrix of connective tissue?
Collagen
Reticular
Elastic
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What helps attract extracellular fluid in the connective tissue?
The high Na+ in glycosaminoglycans
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What do glycoproteins do in the extracellular matrix of the connective tissue?
Act as a cell adhesive
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Is collagen elastic or inelastic?
inelastic
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How do Type I fibers stain with H&E?
Acidophillically
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Where is Type I collagen fiber located?
CT Proper
Bone
Dentin
Cementum
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What does Type II Collagen fiber stain with H&E?
No stain
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Where is Type II collagen located?
Hyaline cartilage
Elastic cartilage
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What stain would you use to stain Type III collagen fibers and what color would they stain?
A silver stain will stain them black
19
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Reticulin fibers are what type of collagen fiber?
Type III
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From what cells are elastic fibers made from?
Fibroblasts of C.T. Proper
Smooth muscle cells of blood vessels
21
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What makes the basal lamina?
Epithelium
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What does the lamina reticularis do?
Connects basal lamina and C.T.
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What are the resident cells of connective tissue?
Fibroblasts
Pericytes
Adipose Cells
Mast Cells
Macrophages
24
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Name the transient cells of the connective tissue?
Plasma Cells
Lymphocytes
Neutrophils
Eosinophils
Basophils
Monocytes
Macrophages
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What do fibroblasts do?
Synthesize extracellular matrix of C.T. proper.
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What do pericytes do?
They are involved in the regulation of blood flow and repair of small vessels.
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What do adipocytes do?
Synthesize triglycerides
28
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Where do mast cells come from?
Bone marrow
29
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What do mast cell granules contain?
Inflammatory mediators
30
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What is another name for a macrophage?
A histiocyte
31
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How do histiocytes stain and why?
They stain basophilically because of the low pH due to the large quantity of lysosomes.
32
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What are plasma cells derived from?
B lymphocytes
33
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What causes the  "spokes of wheel" in plasma cells?
heterochromatin.
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What are the different classes of connective tissue?
Embryonic Connective Tissue
Connective Tissue Proper
Specialized Connective Tissue
35
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What are the two types of embryonic connective tissue?
Mesenchymal C.T.
Mucous C.T.
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What are the types of connective tissue proper?
Loose (Areolar) C.T.
Dense C.T.
Reticular C.T.
Adipose Tissue
37
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What are the three types of specialized C.T.?
Cartilage
Bone
Blood
38
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When is mesenchymal tissue present in C.T.?
Embryo
39
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What two types of collagen are in mucous connective tissue?
Type I & III
40
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Where is mucous C.T found?
In umbilical cord and subdermis of fetus
41
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Where is areolar C.T. found?
Deep to skin
Adventitia of blood vessels
Around glands
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What type of C.T. consists of collagen bundles packed in no pattern?
Dense Irregular Connective Tissue
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What type of C.T. has collagen bundles in parallel and have thin fibroblasts between bundles?
Dense Regular Collagenous C.T.
44
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Where is dense regular Collagenous C.T. located?
Tendons
Ligaments
Aponeuroses
45
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In what locations is adipose tissue mostly found?
Subcutaneous tissue
Within coelomic cavities
Axillary and inguinal regions
46
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Name the basic functions of adipose tissue
Energy
Thermoregulation
Absorption of concussive forces
47
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Where is the nucleus located in a white adipocyte?
To one side
48
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What surrounds individual white adipocytes?
Reticular fibers
49
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Is white adipose tissue multilocular or monolocular?
monolocular
50
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What is the shape of the nucleus of a multilocular fat cell?
round
51
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Why is brown adipose tissue brown from a gross perspective?
High mitochondria
52
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In what areas is brown adipose tissue distributed?
Axilla
Interscapular region
mediastinum
mesenteries
perirenal region
Kartensatzinfo:
Autor: toncrayb
Oberthema: Medicine
Thema: Microanatomy
Veröffentlicht: 17.10.2009
Tags: veterinary, medicine, oregon, Connective Tissue
 
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