Epithelial tissues are nearly completely avascular. Cuboidal—cells are as wide as tall, like cubes. Epithelium (/ ˌ ɛ p ɪ ˈ θ iː l i ə m /) is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue.Epithelial tissues line the outer surfaces of organs and blood vessels throughout the body, as well as the inner surfaces of cavities in many internal organs.
This tissue is an uppermost tissue covering all the organs or body.
Here, the columnar cells have various apical specializations modified to detect the various types of stimuli received by human sensory organs. Stratified squamous epithelia.
Ø This type of epithelium occurs in organs which are subjected to high stretching.
This tissue based on need is of different types as simple epithelium, squamous epithelium, columnar epithelium, etc.
Simple cuboidal tissue is in mammary glands, for example, and plays a key role in lactation.
Epithelial tissues come in three basic types: squamous, cuboidal and columnar. is called an epithelial tissue. Epithelial tissue provides four key functions, they provide protection, they control permeability, they provide sensation, and they produce secretions. Simple cuboidal epithelia. Given that cuboidal epithelial tissue works best at secretion and absorption, it's no surprise that it's the major epithelial tissue found within your glands.
They help in the secretion of hormones and other required juices. Squamous—cells are wider than tall (plate-like) – “squashed”. Epithelial tissue can repair and regenerate itself much better than most other tissues of the body and this is really important because we often cut, scratch or damage our epithelial surface.
Columnar—cells are taller than they are wide, like columns.
Examples of where this epithelial type can be found includes; covering the conjunctiva of the eye and in the largest ducts of exocrine glands. Ø Example: bladder, uterus and the pelvic region of the kidney. The tissue which covers the body surface, organs, ducts, blood vessels etc. Ø The thickness of this tissue prevents the escape of urine to the surrounding tissues. A special type of this epithelium forms sensory epithelium. Stratified … Types of Epithelial Tissue. These three types of tissue are seen in either simple (only one cell layer thick) … Many epithelial tissues are capable of rapidly replacing damaged and dead cells. Simple squamous epithelia. For instance, no blood vessels cross the basement membrane to enter the tissue, and nutrients must come by diffusion or absorption from underlying tissues or the surface. Epithelial Tissue is one of the four types of tissue (epithelial, muscular, connective, and nervous) in animals which consists of closely aggregated polyhedral cells adhering firmly to one another, forming cellular sheets that line the interior of hollow organs and cover the body surface. The main functions of epithelial tissues are as follows: They help in the exchange of materials from the surrounding environment.