What is mucous connective tissue rich in?
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Hyaluronic acid.
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What is mucous connective tissue rich in?
Hyaluronic acid.
What is the most widespread type of connective tissue?
Loose connective tissue.
Which two amino acids are common in the formation of collagen?
Hydroxyproline and hydroxylysine.
What characterizes reticular connective tissue?
A network of argyrophilic fibers as the dominant fibrous component.
What are reticular fibers composed of?
Fibrils of type II collagen and associated glycoproteins.
What are the two types of dense connective tissue?
Dense regular connective tissue and dense irregular connective tissue.
What do plasma cells produce?
Specific antibodies against antigens.
What is the main component of elastic fibers?
Elastin.
What type of connective tissue fibers are found in the dermis of skin, tendons, and ligaments?
Type I collagen fibers.
What type of collagen fibers provide resistance to pressure?
Type II collagen fibers.
What do neutrophils do at the site of infection?
They gather in great numbers and contribute to pus formation.
What do mast cells release during an inflammatory reaction?
Potent mediators and cytokines that recruit other cells.
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.
Where are reticular fibers most abundant?
In hematopoietic and lymphoid tissues and hollow organs such as the bladder, intestines, and uterus.
What is the basal lamina?
A non-cellular layer made of glycoproteins and collagen fibers that cells attach to.
What is the most abundant fibrous component of connective tissue?
Collagen fiber.
Why are reticular fibers described as argyrophilic?
Because of their black staining properties with silver salts.
What is the function of fibroblasts?
They secrete collagen.
What are the thin, branching fibers that form a delicate supporting meshwork in organs like lymph nodes?
Type III collagen fibers.
What is the role of macrophages in connective tissue?
They participate in the body's defense against infection.
What is the function of eosinophils?
They are involved in allergic conditions and fighting parasites.
What is laminin?
A protein that provides binding sites for cell membranes, collagen fibers, and heparin sulfate proteoglycan.
What type of cells constitute a stable population in connective tissue?
Fixed cells.
Where are Type IV collagen fibers found?
In the basal lamina of the basement membrane.
What is the role of microvilli on the apical surface of epithelial cells?
To enhance the cell's ability to secrete or absorb substances.
