Function | Forms the external and internal surface of the organs. This tissue acts as a barrier that regulates the substances that enters and exits the surfaces. | Connective tissues bind, protect and support other tissues and organs. |
Arrangement | Cells are arranged in a single or multiple layers. | The cells in the connective tissue are scattered in the matrix. |
Components | It is made up of epithelial cells and little amount of intracellular matrix. | It is made up of cells and large amount of intracellular matrix. |
Blood capillaries | There are no blood capillaries surrounding the tissue and they get their nutrients from the basement membrane. | Connective tissues are surrounded by blood capillaries which is where they get their nutrients from. |
Location in relation to the basement membrane | The epithelial tissues are found above the basement membranes. | The connective tissue lies below the basal membrane. |
Development | Epithelial tissues develop from ectoderm, mesoderm and endoderm | Connective tissues develop from mesoderm. |
Where can these tissues be found? | Skin, mucous membranes, glands, organs like the lungs, kidneys, | Adipose, bone, ligaments, tendons, nerves, cartilage, muscles |
Epitheleal and Muscle
epithelial tissue can’t contract, doesn’t have a sarcoplasmic reticulum, doesn’t have a direct blood supply, doesn’t have t tubules or calcium pumps, doesn’t ferment, doesn’t have a coating on every layer (in muslces they have stuff like perimysium and endomysium), doesn’t have stuff like the sarcolema and super long actin and myosin strands, it needs a lot less energy.
Muscle tissue isn’t found on the very outermost layer of the body, muscle tissue doesn’t produce mucous or have cillia, muslce tissue doesn’t have the same pigmentation as epithelial tissue, muscle tissue divides less rapidly.