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Connective Tissue Composition and Functions
Which two amino acids are common in the formation of collagen?
Hydroxyproline and hydroxylysine.
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Types of Connective Tissue and Their Characteristics
What characterizes reticular connective tissue?
A network of argyrophilic fibers as the dominant fibrous component.
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Connective Tissue Composition and Functions
What are reticular fibers composed of?
Fibrils of type II collagen and associated glycoproteins.
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Types of Connective Tissue and Their Characteristics
What are the two types of dense connective tissue?
Dense regular connective tissue and dense irregular connective tissue.
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Cell Types in Connective Tissue
What do plasma cells produce?
Specific antibodies against antigens.
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Cell Types in Connective Tissue
What do neutrophils do at the site of infection?
They gather in great numbers and contribute to pus formation.
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Cell Types in Connective Tissue
What do mast cells release during an inflammatory reaction?
Potent mediators and cytokines that recruit other cells.
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Connective Tissue Composition and Functions
What is the ground substance in connective tissue?
A colorless, translucent substance with the consistency of a highly hydrated gel that occupies space between cells and fibers.
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Connective Tissue Composition and Functions
Where are reticular fibers most abundant?
In hematopoietic and lymphoid tissues and hollow organs such as the bladder, intestines, and uterus.
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Types of Connective Tissue and Their Characteristics
What is the basal lamina?
A non-cellular layer made of glycoproteins and collagen fibers that cells attach to.
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Connective Tissue Composition and Functions
Why are reticular fibers described as argyrophilic?
Because of their black staining properties with silver salts.
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Types of Connective Tissue and Their Characteristics
What are the thin, branching fibers that form a delicate supporting meshwork in organs like lymph nodes?
Type III collagen fibers.
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Cell Types in Connective Tissue
What is the role of macrophages in connective tissue?
They participate in the body's defense against infection.
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Cell Types in Connective Tissue
What is the function of eosinophils?
They are involved in allergic conditions and fighting parasites.
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Connective Tissue Composition and Functions
What is laminin?
A protein that provides binding sites for cell membranes, collagen fibers, and heparin sulfate proteoglycan.
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Types of Connective Tissue and Their Characteristics
Where are Type IV collagen fibers found?
In the basal lamina of the basement membrane.
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Types of Connective Tissue and Their Characteristics
What is the role of microvilli on the apical surface of epithelial cells?
To enhance the cell's ability to secrete or absorb substances.
