Histology - CT Proper Flashcards
Connective tissue
primary tissues in the body where the cells are widely separated by intercellular substance
2 types of CT
CT proper and modified/specialized CT
Modified/specialized CT includes
bone, blood and cartilage
Intercellular Matrix found between
CT cells
Intercellular Matrix made up of
ground substance and fibers
amorphous matrix/ground substance
jell-like material (shape-less); made up of glycoproteins and proteoglycans containing a high portion of water
3 types of fibers
collagen, elastic and reticular
collagen fiber
flexible, but not stretchable and have great tensile strength; wary, branching bundles; stretch up to 3%
elastic fiber
made of elastin; branching thin acidophyllic fibers; stretchable and flexible; stretch up to 100% of length
reticular fiber
made up of a form of collagen; appear in a form of a network of fine fibers; lymphatic system
mesenchymal cells
embryonic stem cells; stellate in shape with interconnected processes; give rise to all types of CT cells
fibroblasts
stellate in shape on surface view; spindle shaped on side view; give rise to CT matrix; important in healing because they produce collagen
histiocytes
macrophages; round to irregular and phagocytic
mast cells
round to oval; secrete histamine and heparin
plasma cells
round cells with eccentric nucli with a characteristic clock face appearance; secrete antibodies
fat cells
adipose cells; largest cells and appear oval with flat and peripheral nuclei; cytoplasm is occupied by a large droplet of fat
pigment cells
branching with melanin pigment in cytoplasm; found in skin and choroid of the eye
leukocytes
WBC that migrate to CT
loose CT
CT proper; components of CT widely spread
Areolar CT
loose; most widely distributed; found around blood vessels and nerves. filling gaps between organs, and forming superficial fascia
reticular tissue
loose; reticular fibers are in abundance and are associate with reticular cells of which some are undifferentiated and some are phagocytic; bone marrow, spleen, and lymph nodes
adipose CT
loose; made up of fat cells; found under the skin and around heart and kidneys for protection
mucoid CT
loose; embryonic in origin; made up of ground substance, some collagen, and fribroblasts; found in umbilical cord
Dense CT proper
components are densely packed