and lines cavities and lumen and formed glands. There are:
a) Surface epithelium
c) Special epithelium
2. Connective tissue, which surrounds or underlies and
support the other three basic tissues.
It is classified into:
a) Connective tissue proper
1- loose C.T
2- Dens C.T "regular, irregular"
b) Haemopoitic tissue
c) Blood and lymph
d) Supportive tissue" cartilage, bone"
3- Muscular tissue is made of contractile cells. responsible
for body movement" smooth, skeletal, cardiac"
From outside and inside the body to control its
activities and function.
a) They adhere to one another by mean of junctions
b) They exhibit functionally distinct surfaces, free or apical,
lateral and basal surface.
c) The basal surface is attached to the underlying basement
Membrane. EM = basal lamina
2. Facilitate differentiation and proliferation.
3. Provide attachment to underlying tissue.
- Lines closed coelomic cavities, peritoneum, pleura,
Pericardial called mesothelium
- Lines cardiovascular channels by endothelium.
- Lines all derivatives of surface epithelium such as
Give examples of different secretion secreted by epithelial
Milk – breast
Sweat gland sweat
Gland in the external ear wax
Digestive gland enzymes
Endocrine gland hormones
Urine, reproductive cells
According to the cell number and the height and shape of surface layer,
SE divides into:
b. Exocrine gland.
111- Neuro-epithelium = special epithelia have certain special
germinal epithelium lined seminefrous tubules of the
Consists of single layer of cells it can be classified as follow:
The cells are flat with flattened nuclei.
It is formed of one layer of cubical cells with central rounded
Nuclei resting on a basement membrane.
It is formed of tall columnar cells with basal oval nuclei
- It is primarily responsible for secretion and absorption.