53 Questions
What is the main characteristic that defines connective tissue?
Few cells loosely embedded in a complex extracellular matrix
What is the embryonic origin of connective tissue?
Mesoderm
What is the function of connective tissue in providing physical support to the body?
Through bone tissue
What type of tumors arise from connective tissue?
Sarcomas
What is the name of the complex extracellular matrix found in connective tissue?
Ground substance
What is the function of mast cells in the body?
To trigger symptoms of allergy through histamine release
What is the composition of collagen fibers?
Fibrils arranged in bundles of indefinite length
What is the approximate percentage of collagen in the human body?
30% of its dry weight
What is the function of vitamin C in collagen synthesis?
As a cofactor in collagen synthesis
What is the characteristic of collagen fibers in terms of elasticity?
They can stretch up to 5% of their initial length
What is the cell responsible for collagen synthesis?
All of the above
What is the main function of fibroblasts in connective tissue?
To synthesize fibers of the connective tissue
What type of collagen fibers do reticular cells synthesize?
Fine collagen fibers
What is the name of the macrophages found in the liver?
Kupffer cells
What is the name of the type of fat that contains multiple droplets of lipids?
Multilocular fat
What is the main function of adipocytes in connective tissue?
To deposit lipids
What is the origin of macrophages in connective tissue?
From monocytes that cross the vessel walls into connective tissue
What percentage of the body's collagen is Type 1?
90%
What is the primary function of Type 2 collagen?
Resists compression
What type of collagen is found in epithelial basal lamina?
Type 4
What is the characteristic of elastic fibers?
Pale yellow and can stretch 2.5 times original length
What type of collagen do reticular fibers consist of?
Type 3
What is the result of a deficiency in Collagen Type III?
Fragile skin syndromes
What is the characteristic of Loose Connective Tissue?
Loosely arranged fibers
What is the main difference between Loose and Dense Irregular Connective Tissue?
Number of cells and fibers
In which type of Connective Tissue are fibers irregularly and regularly arranged?
Dense Connective Tissue
What is the relationship between Loose and Dense Irregular CT relative to an epithelium?
The positioning of Loose and Dense CT varies relative to an epithelium
What is the characteristic of Dense Connective Tissue?
Many fibers and few cells
What is the characteristic of Reticular Connective Tissue?
Loose and dense irregularly arranged fibers
What is the primary function of the ground substance in connective tissue?
To facilitate the exchange of nutrients and waste
What is the characteristic of connective tissue that distinguishes it from other tissues?
Lack of polarity in cells
Which of the following is a function of connective tissue in the body?
To defend against injury and repair damaged tissue
What is the term for connective tissue that has a high cellular density and little intercellular matrix?
High cellular density connective tissue
What type of collagen fibers do fibroblasts synthesize?
Collagenous, elastic, and reticular fibers
What color of adipocytes contain multiple droplets of lipids?
Brown adipocytes
What is the function of reticular cells in connective tissue?
To offer scaffolding to parenchymatous organs
What is the function of macrophages in connective tissue?
To phagocytose foreign particles
What are the components of ground substance?
Glycosaminoglycans and core proteins
What is the main function of tissue fluid?
To remove waste and maintain fluid balance
What is the significance of skin turgor?
It indicates hydration levels
What is the role of lymphatics in connective tissue?
To maintain fluid balance and prevent edema
What is edema?
A condition of fluid accumulation
What is the relationship between proteoglycans and glycosaminoglycans?
Glycosaminoglycans link to core proteins to form proteoglycans
Which type of adult connective tissue has fibers that are loosely arranged and irregular?
Loose Connective Tissue
In which type of Connective Tissue are fibers densely packed and irregularly arranged?
Dense Connective Tissue
What is the characteristic of Reticular Connective Tissue?
Fibers that form a scaffolding structure
Where is Loose Connective Tissue typically found in the body?
In the skin and epithelial tissues
What is the primary function of leptin produced by adipocytes?
Regulation of body fat
In which type of tissue are reticular fibers typically found?
Reticular Connective Tissue
What is the primary function of Brown Adipose Tissue?
Heat generation
What is the characteristic of fibrocyte nuclei in Dense Regular Connective Tissue?
Very thin and elongated
What is the function of adipocytes in protecting the body?
Absorbing external forces
What is the characteristic of Unilocular fat cells?
One lipid droplet
This quiz covers the definition, origin, functions, and relevance of connective tissue, including its components, classification, and characteristics. It's a comprehensive overview of the topic, covering embryonic and adult connective tissue, as well as special types.
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