In this article, we explain their function, what they are made of, and the types of cells involved. Complex tissues are of two types: Xylem or wood and phloem or bast. The animal cells are grouped together to form animal tissues. There are four main tissues in the body – epithelium, muscle, connective tissue and nervous tissue. These tissues vary in their structure, function, and origin.The animal tissues are divided into epithelial, connective, muscular and nervous tissues. Each tissue type has a characteristic role in the body: These different types of cells coordinate to perform a function. Complex tissue is composed of more than one kind of cells. Complex Tissues Tissues composed of more than one cell type are generically referred to as complex tissues. Through cell differentiation, tissues as different as brain tissue and muscle are formed from the same single cell. They are two types, namely Xylem tissue and Phloem tissue. Xylem is a multifaceted tissue forming a part of the vascular bundle. A tissue membrane is a thin layer or sheet of cells that either covers the outside of the body (e.g., skin), lines an internal body cavity (e.g., peritoneal cavity), lines a vessel (e.g., blood vessel), or lines a movable joint cavity (e.g., synovial joint). In order, from least complex to most complex: Tissue Membranes. Complex Permanent Tissues: The complex tissue consists of more than one type of cell having a common origin. Vascular tissue is an example of a complex tissue, and is made of two specialized conducting tissues: xylem and phloem. - Xylem - Phloem (bast) Xylem and Phloem are also called vascular tissue and together they constitute vascular bundles. While there are different hormones involved, all plants also develop from a single cell. Multicellular organisms are organised into increasingly complex parts. The four basic tissue types are epithelial, muscle, connective, and nervous tissue. Complex tissues are made up of more than one type of cells and they work together as a unit. Tissues are groups of similar cells that have a common function. Xylem and Phloem are complex permanent tissues and are found in the vascular bundles in the plants. Xylem tissue transports water and nutrients from the roots to different parts of the plant, and includes three different cell types: vessel elements and tracheids (both of which conduct water), and xylem parenchyma. Complex Permanent Tissue. Complex tissues are of two types. The complex tissues are generally heterogeneous in nature, being com­posed of dissimilar types of cell elements. The simplest living creatures are single cell creatures, but in complex life forms, such as human beings, cells also exist in the tissue level. Let us have a glimpse of each type of animal tissue in detail. Unlike simple permanent cells which look the same and are made up of one type of cells, complex permanent tissues are made up of more than one type of cells. The 4 Basic Tissue Types in the Human Body www.exploringnature.org Tissues are groups of cells with a common structure (form) and function (job). Cells, tissues, organs and systems. Xylem Tissue. While the plant lifecycle sometimes seems alien and complex, the process of cell differentiation is very similar. The different types of animal tissues include: There are at least 200 different cell types in the human body. Differentiation allows cells to develop into the four major tissue types: epithelial tissue, nervous tissue, connective tissue and muscle tissue. Some that you'll need to know best include specialized blood cells, specialized nerve cells and specialized … They transport water, salt and prepared food material to various parts of the plant body. In Plants. I. 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