Organisms are made up of
different levels of structural organization.
The different cell types that
make up an organism are grouped into masses of cells called tissues.
The major tissues of vertebrate animals include epithelia,
connective tissue, nervous tissue, bone, and cartilage.
Tissues are assembled into
organs, and organs work together as organ systems. Organ systems
undergo regulation and control to coordinate their functions.
In this Lesson, well look at
the tissues, organs, and organ systems of the human body. Well
also look at the regulation and control of organ systems by studying
homeostasis, using the maintenance of body temperature and salt
balance as examples.