What is Tissue?
Tissue is an aggregation of
similar cells that usually ha a common embryonic origin and they function
together to perform specialized activities. So cells aggregate and form
tissue, intercellular matrix, fill the
spaces between the cells.
The word tissue originates from a French
word, which means “to weave.”
Check out what is germ
layer and embryonic
origin of tissue?
In biology, A tissue is defined as a group
of cells that have a similar structure and that function together to perform a
specific function. The tissue consists of a
group of structurally and functionally similar cells and intercellular
material fills the spaces between the
cells.
Tissue is a cellular organizational level
of the human body, between cells and a complete organ. Organs are formed by the
grouping of multiple tissues that function together.
Histology
Histology is also known as microscopic anatomy. The study of tissues and their
structure is called Histology. The tissue of the body consists of huge numbers of
cells, from these tissues all organs of the body are formed.
Tissues are classified according to the size, shape, and function
of these cells.
Types of Tissue
There are four types of tissue; each type of tissue has a distinct structure and function -
1. Epithelial Tissue
Epithelial tissue forms the covering of all body surfaces,
lines body cavities and hollow organs, ducts, and forms glands.
The function of epithelial tissue includes protection,
absorption, secretion, filtration, excretion, diffusion, and sensory reception.
Know here different types of
epithelial tissue.
2. Connective Tissue
Connective tissue protects, support the body and its organ, and gives structure to other tissues and organs
in the body.
Connective tissue is consist of cells, fibers,
and a gel-like substance.
The major function of connective tissue is binding and
supporting, protecting, insulating, storing reserve fuel, and transporting
substances within the body.
What are types of
connective tissue, check out here?
3. Muscular Tissue
Muscle Tissue gives the
ability of a muscle to contract, responsible for movement and
generation of force that allows movement.
Muscle tissue can be categorized into skeletal muscle
tissue, smooth muscle tissue, and cardiac muscle tissue.
4. Nervous Tissue
Nervous tissue initiates and transmits action-potential;
nerve impulses that help to coordinate body activities.
Nervous tissue is located in the brain, spinal cord, and
nerves, responsible for coordinating and controlling many body activities.
The cells in the nervous tissue generate and conduct the
impulses called neurons or nerve cells. Nerve cells have three major parts
- dendrites, cell body, and one axon.
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