Histo Lec - M5 Connective Tissue Flashcards
is one of the 4 major types of tissues in the body of animals the major constituent of which is extracellular matrix
Connective tissue
provides support, binds together, and protects tissues and organs of the body
Connective tissue
polysaccharides formed of disaccharide sub-units composed of uronic acid and hexosamine
Glycosaminoglycans
(proteins with sugars attached where the protein forms the major part of the molecule).
Glycoproteins
most abundant protein in human body. Molecules of fibers are oriented to form a sort of lattic
Collagen fibers
form network of fibers. Stain black by silver salts. High glycoprotein content making them PAS-positive
Reticular fibers
form broad, often (but not always) wavy, diffusely stained bundles.
Elastic fibers
Stellate cells that have long, tapering, branching processes.
Fibroblasts
many present in loose connective tissue. May look similar to fibroblasts; however, they are actively phagocytic and rounded in appearance.
Macrophages
embryonic connective tissue cells. Resemble fibroblasts, but usually smaller.
Mesenchymal cells
form three-dimensional networks of cells that are in contact via long processes.
Reticular cells
wandering cells that contain basophilic granules composed of heparin
Mast cells
antibody producing B-lymphocytes. As with other lymphocytes found in connective tissue and identifying feature is the spoke-like arrangement of the chromatin within the nucleus.
Plasma cells
have shape similar to fibroblasts, but synthesize melanin that in the case of skin is transferred to other skin cells.
Pigment cells (melanocytes)
delicate, flexible, not very resistant to stress, well vascularized. All types of connective tissue cells present
Loose connective tissue
Clear predominance of collagen fibers at expense of ground substance. Fewer cells than loose.
Dense connective tissue
bundles of thick, parallel fibers. Small amount of loose connective tissue around each bundle
Elastic tissue
a specialized loose connective tissue with cells that form a fine matrix of fibers.
Reticular tissue
a lot of amorphous ground substance composed mainly of hyaluronic acid (glycosaminoglycan). Forms a jellylike tissue
Mucous tissue
fat cells are connective tissue cells that are specialized for lipid synthesis and storage.
Adipose tissue
composed of adipose cells, each with a single very large droplet (unilocular) of lipid (mostly triglyceride) that occupies nearly all the volume of the cell.
White adipose tissue
each cell contains multiple droplets of lipid (multilocular). The nuclei of these cells may be central with in the cell.
Brown adipose tissue
What are examples of connective tissue?
bone, cartilage & blood
main components of connective tissue
cells, protein fibers, and an amorphous ground substance.
matrix is mainly formed from
glycoaminoglycans and glycoproteins
type of collagen fiber: most common, found in every connective tissue.
type 1
type of collagen fiber: found in hyaline and elastic cartilage and in vitreous body of eye
type 2
type of collagen fiber: found in reticular fibers, healing wounds, smooth muscle, and fetal skin
type 3
type of collagen fiber: found in basal laminae of epithelia
type 4
type of collagen fiber: found in placental basal laminae, tendon, and muscle sheaths
type 5
protein elastin is an important component of?
elastic fibers
type of dense tissue: collagen bundles are present without apparent orientation, called dense irregular connective tissue.
dense irregular connective tissue
type of dense tissue: When oriented in parallel arrays
dense regular connective tissue
