Tissue Level of Organisation Quiz

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The epithelium consists largely or entirely of closely packed cells with little or no intercellular material between adjacent cells. The points of attachment between adjacent plasma membranes of epithelial cells are called ______.

cell junctions

Epithelial cells are arranged in continuous sheets that may be either single or multilayered. Nerves may extend through these sheets, but blood vessels do not and so epithelia are ______.

avascular

Both types of epithelium get their nutrients and remove their wastes from blood vessels located in the underlying connective tissue. The epithelia adhere firmly to the connective tissue and this holds them in position and prevents them from being torn. The surface of attachment between the epithelium and the connective tissue is a thin extracellular layer called the ______.

basement membrane

Simple epithelium is found in areas that have minimal wear and tear where the epithelium is specialised for ______ or filtration.

absorption

Stratified epithelium is found in areas with a high degree of wear and ______.

tear

Pseudostratified epithelium has only one layer of cells but some cells do not reach the surface, giving the tissue a multilayered, or ______, appearance.

stratified

Squamous cells are flattened and scale like and are attached to each other like a ______.

mosaic

Cuboidal cells are usually cube-shaped in cross-section and sometimes appear as ______.

hexagons

Columnar cells are tall and cylindrical, appearing as rectangles set on ______.

end

Transitional cells often have a combination of shapes. They are found where there is a great degree of distension or expansion in the body. In the bottom layer of an epithelial tissue, transitional cells may range in shape from cuboidal to columnar. In the intermediate layer, they may be cuboidal or ______.

polyhedral

Cells are highly organized units. ◼ BUT they do not function in isolation. ◼ They work together in a group of similar cells called a ______.

tissue

There are 4 principal types : ◼ ______ TISSUE ◼

EPITHELIAL

◼ ◼ CONNECTIVE ______ ◼

TISSUE

MUSCULAR ______ ◼

TISSUE

NERVOUS ______ ◼

TISSUE

It lines the body cavities. It lines the interiors of the respiratory and digestive tracts, blood vessels and ducts. It forms the outer covering of the external body surfaces and of some internal organs. It makes up (along with nervous tissue) the parts of the sense organs that are sensitive to stimuli that produce smell and hearing sensations. It is the tissue from which gametes develop. ______ epithelium

Glandular

Test your knowledge about the tissue level of organisation in living organisms. Learn about the different types of tissues and their functions in the body.

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