connective tissue: test 1 Flashcards
what are the general features of connective tissue?
1) Consist of cells surrounded by a matrix
2) Matrix may be fluid, semi-fluid, gelatinous, fibrous, calcified matrix gives the tissue its consistency.
3) Matrix is made by the cells then they live in it.
4) Doesn’t occur on free surfaces (except in joints)
5) Has a nerve supply
6) Has a blood supply
which type of connective tissue cells secrete matrix?
fibroblasts
immune cells, engulf pathogens and kill them. which type of connective tissue cells is this ?
macrophages
immune cells, make antibodies, type of lymphocyte. which type of connective tissue cells is this?
plasma cells
immune cells, creates histamine, and causes swelling, is which type of connective tissue cells?
mast cells
which type of connective tissue cells are fat storage cells?
adipose cells
various white blood cells of the immune system fight infections, is which type of connective tissue cells?
leukocytes
what is a non-cellular material surrounding the cells gives connective tissue shape and consistency made by fibroblasts made of ground substance?
connective tissue matrix
what is ground substance?
are molecules made of protein and polysaccharides. 4 ground substance molecules are in the matrix.
- hylauronic acid
- chondroitin sulfate
- dermatin sulfate
- keraton sulfate.
what is hylauronic acid?
viscous and slippery. ex- lubrication in joints, and in the eyeball
what is chondroitin sulfate?
jelly like Ex- in cartilage, bone, and skin.
what is dermatin sulfate?
stronger, tough, not stiff, flexible. Ex- tendons and blood vessels
what is keraton sulfate?
hard and strong. Ex- bone and fingernails
what gives matrix strength, shape or elasticity.
Fibers
which type of fiber give is tough and strong. Strengthen connective tissue.
collagen
which type of fiber forms a mesh to give a tissue shape?
reticular fibers
which type of fiber allows tissue to stretch?
elastic fibers
which type of connective tissue has fewer fibers so matrix has “space” for cells and ground substances?
Loose connective tissue
what type of connective tissue matrix has all 3 fibers and all 4 ground substance molecules. Acts as a packing material in organs and tissues. Cushions tissue. Ex- subcutaneous layer under skin
Areolar connective tissue
what type of connective tissue fat tissue’s Major cell type is adipose cells. Very few fibers. Stores fat. Acts as armor for organs (protect). Fill out spaces?
adipose tissue
what type of connective tissue has lots of reticular fibers, Makes internal structure of organs?
Reticular connective tissue
what type of connective tissue has lots of fibers, Room for cells or ground substance?
Dense connective tissue
what type of connective tissue has all fibers run in the same direction. Ex- tendons. Strong in fiber direction, weak perpendicular to fiber direction?
Dense regular connective tissue
what type of connective tissue has lots of fibers ging in all directions. Strong in every direction. Ex- dermis of the skin?
Dense irregular connective tissue
