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en.wikipedia.org/wiki/Tissue_(biology)

In biology, tissue is a cellular organizational level intermediate between cells and a complete organ. A tissue is an ensemble of similar cells from the same origin that together carry out a specific function. Organs are then formed by the functional grouping together of multiple ... The epithelial tissues are formed by cells that cover the organ surfaces such ...

www.khanacademy.org/science/biology/principles-of-physiology/body-structure-and-homeostasis/a/tissues-organs-organ-systems

All the systems of the body work together to keep an organism up and ... As we saw above, every organ is made up of two or more tissues, groups of similar cells that work ... Specialized forms of connective tissue include adipose tissue—body  ...

www.bbc.co.uk/education/guides/z9hyvcw/revision/6

Study animal and plant cells with BBC Bitesize KS3 Science. ... Organs are made from tissues, and systems are made from several organs working together. ... An organ system is made from a group of different organs, which all work together ...

answers.yahoo.com/question/index?qid=20080105111541AAOxIXB

A tissue = a group of cell that work together to perform a specific ... If they work then which work ? ... and a group of tissues forms an organ

sepa.duq.edu/regmed/regmedbasics/CellsTissuesOrgans.html

Some life forms, like bacteria, are only one cell and others, like humans, are made of millions of cells. ... In more complex organisms, different groups of cells work together to do different functions particularly well like protecting the body from the ... In your immune system, you have special cells called B and T cells that travel ...

www.coursehero.com/file/7201907/Module-2-Quiz

Rationale: Tissues are formed from a collection of like cells, ... Together these tissues allow the organ to engage in a specific activity or process. ... Rationale: A system is a group of organs working together to perform complex functions.

sites.google.com/site/mrgsscienceclass/about-science-class-1/body-systems-tissues

All complex organisms are made of groups of cells called tissues. ... Organ systems are many organs, tissues and cells working together to complete a life ...

www.exploringnature.org/graphics/anatomy/levels_organization_Activity.pdf

There are many kinds of cells in the human body, such as muscle cells, bone cells, skin ... groups of cells that work together to form tissues and organs that are  ...

www.kidsbiology.com/biology_basics/cells_tissues_organs/structure_of_living_things2.php

Many tissues come together to form what biologists call an organ. This is like a city in the previous example. Organs then work together to form a system, and ...