There may also be cause for concern if your period lasts more than seven days. On the flip side, abnormal uterine bleeding is also used to describe amenorrhea or the absence of menstruation. Some women are concerned, needlessly, by clots in their menstruation.
An organ is a unit composed of several tissue types. Outline. Organs are structures composed of two or more primary tissue types arranged in various proportions and pattern to perform a certain function or a range of functions. The lung is one example of an organ made up of all the four primary tissue types. The tissues that make up the lung function collectively to expand in order to draw air from the atmosphere, exchange oxygen in inhaled air with carbon dioxide from blood, eliminate/give off carbon dioxide and deliver oxygen to blood.
Grouped in to four basic types: connective, muscle, nervous, and epithelial. Multiple tissue types compose organs and body structures. While all animals can generally be considered to contain the four tissue types, the manifestation of these tissues can differ depending on the type of organism.n 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 tissues.