Editing Histology (section)

==Biological tissues==

===Animal tissue classification ===
{{main|Anatomy#Animal tissues}}

There are four basic types of animal tissues: [[muscle tissue]], [[nervous tissue]], [[connective tissue]], and [[epithelial tissue]].<ref name="Leeson and Leeson, 1981" /><ref name="Ross and Pawlina, 2016" /> All animal tissues are considered to be subtypes of these four principal tissue types (for example, blood is classified as connective tissue, since the blood cells are suspended in an [[extracellular matrix]], the [[blood plasma|plasma]]).<ref name="Ross and Pawlina, 2016" />
{{columns-list|colwidth=20em|
* '''[[Epithelium]]'''
** [[Simple epithelium]]
*** [[Simple squamous epithelium]]
*** [[Simple cuboidal epithelium]]
*** [[Simple columnar epithelium]]
** [[Pseudostratified columnar epithelium]]
**  Stratified epithelium
*** [[Stratified squamous epithelium]]
*** [[Stratified cuboidal epithelium]]
*** [[Stratified columnar epithelium]]
*** [[Transitional epithelium]]
** Multicellular glands
* '''[[Muscle tissue]]'''
** [[Smooth muscle]]
** [[Skeletal muscle]]
** [[Cardiac muscle]]
* '''[[Connective tissue]]'''
** General connective tissue
*** [[Loose connective tissue]]
*** [[Dense connective tissue]]
** Special connective tissue
*** [[Cartilage]]
*** [[Bone]]
*** [[Hemopoietic]]
*** [[Blood]]
*** [[Lymph]]
*'''[[Nervous tissue]]'''
** [[Central nervous system]]
** [[Peripheral nervous system]]
** Special receptors
}}

===Plant tissue classification===
[[File:Alliaria petiolata, stalk, cross section, Etzold green.jpg|thumb|right|300px|Histologic section of a plant stem (''[[Alliaria petiolata]]'')]]
{{main|Plant Anatomy}}
For plants, the study of their tissues falls under the field of [[plant anatomy]], with the following four main types:
* [[Epidermis (botany)|Dermal tissue]]
* [[Vascular tissue]]
* [[Ground tissue]]
* [[Meristematic tissue]]