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Micro CT lectures Exam 1
Reel's Connective Tissue Notes
45
Veterinary Medicine
Graduate
09/21/2011

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Cards

Term
What are the three types of special connective tissue?
Definition
Reticular, Elastic and Mucous
Term
What type of cells are found in connective tissue?
Definition
Fibroblasts/fibrocytes
Term
What are the three components of connective tissue?
Definition
cells, fibers and ground substance
Term
What are the functions of connective tissue?
Definition
support, protection from mechanical damage, defense, nutrition/storage and repair/regeneration
Term
What is the predominant fiber type found in proper connective tissue
Definition
collagen
Term
T/F : Proper connective tissue is alive
Definition
False
Term
Tensile strength is the primary function of what tissue?
Definition
proper connective
Term
How does connective tissue differ from epithelia in its cell relationships?
Definition
cells are not directly attached to each other
Term
T/F : Dense connective tissue has more cells than loose connective tissue
Definition
False: Dense has more fibers but fewer cells
Term
Describe the structure of loose CT
Definition
random arrangement, thin fibers, lots of ground substance, soft and compliant
Term
Where is regular dense connective tissue primarily found?
Definition
tendons and ligaments
Term
What is the function of dense irregular CT?
Definition
connect muscle to bone
Term
How are regular and irregular dense CT different in reference to their fibroblasts?
Definition
Irregular has very few fibroblasts and regular has more
Term
How is the orientation of irregular dense CT fibers different from regular?
Definition
randomly oriented
Term
T/F : regular AND irregular dense CT have minimal ground substance
Definition
TRUE
Term
Where is irregular dense CT found
Definition
concentrated where forces come from different directions (skin and organ capsules)
Term
What Type of collagen is reticular fiber ?
Definition
Type 3
Term
What stain must be used to see reticular tissue and why?
Definition
Silver- delicate branched fiber network
Term
What are the primary sites for reticular tissue?
Definition
Lymphatic and hematopoietic sites
Term
What are the functions of elastic tissue?
Definition
stretching, elastic recoil and resilience
Term
What is the predominant element in mucous tissue?
Definition
Matrix
Term
Name two features of mucous tissue
Definition
Fibers are scarce and low cellularity
Term
What type of tissue is not found in mammalian adults and is rare in non-mamamalian adults?
Definition
Mucous
Term
What does Ehlers-Danlos syndrome cause?
Definition
skin hyperextensibility, joint laxity, skin and vessel fragility and poor wound healing
Term
Proper CT arises from what embryologic layer?
Definition
Mesoderm
Term
What are three resident cell populations?
Definition
fibroblasts, macrophages and mast cells
Term
T/F : Fibroblasts are temporary cells
Definition
FALSE- they're permanent
Term
What are the functions of fibroblasts
Definition
support and healing/repair
Term
What does an active fibroblast do?
Definition
produces fibers and matrix
Term
What is the purpose of inactive fibroblasts
Definition
maintenance/turnover
Term
Where do fibroblasts lie?
Definition
between collagen
Term
What are the functions of macrophages?
Definition
Phagocytosis, antigen presentation
Term
Where are macrophages derived from?
Definition
Blood monocytes
Term
T/F : Macrophages can be found in all tissue
Definition
TRUE
Term
How can you distinguish between macrophages and fibroblasts based on cell margins?
Definition
macrophages have distinct margins and fibroblasts have indistinct margins
Term
What do granules in Mast cells contain and why?
Definition
histamine, heparin and infection mediators- hypersensitivity
Term
Where are mast cells found?
Definition
skin, respitory tract and digestive tract
Term
What are the functions of white fat?
Definition
energy storage, shock absorption and insulation
Term
Describe white fall nuclei
Definition
eccentric, flattened and appear on edge of cells
Term
T/F : white fat lipids are not membrane bound
Definition
True
Term
What is the function of brown fat
Definition
heat generation
Term
Which type of cells are larger? Brown fat cells or white fat cells?
Definition
Brown
Term
How do brown fat nuclei differ from white fat?
Definition
plump, oval
Term
Why is brown fat brown?
Definition
high amount of mitochondria, well vascularized
Term
T/F : adipose tissue contains nerves
Definition
TRUE
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