general introduction about animal tissues

2.  Human body – 100 trillion cells organized
into about 200 types
 Animal cells – intercellular and
extracellular matrix is present in between
and around the cells
 TISSUE – grouping of cells to perform
specialized function
 Tissue term introduced by – Bichat
(founder of animal histology)

3.  HISTOLOGY – science that deals with the
detailed structure, chemical composition
and functions of tissues. Term – Mayer
 HISTOGENESIS – formation and
development of tissues from
undifferentiated or embryonic cells.
 HISTOLYSIS – degeneration of tissues

4.  animal body – 20 types
 4 types of fundamental or elementary
tissues –
1. Epithelial tissue
2. Muscular tissue
3. Connective tissue
4. Nervous tisssue

6. S.
No.
Types Location Origin Funcitons
1 Epithelial
tissue
free surfaces ectoderm,
mesoderm,
endoderm
Protection,
secretion,
excretion,
absorption,
sensory and
reproduction
2 Connective
tissue
Inside body, its organs.
Other tissues and below
skin
Mesoderm Holding or binding,
support,
transport,
circulation
3 Muscular
tissue
Inside movable parts Mesoderm, a
few
ectoderm
Movement and
locomotion
4 Nervous
tissue
Central, peripheral and
every organ
Ectoderm Cybernetics
(communication
and control)