Of the hemlocks, only western hemlock (Tsuga heterophylla) challenges the mature height of the majority of fir trees. Mountain hemlock grows between 125 and 175 feet in the Pacific Northwest, while the rest of the hemlocks are in the 50- to 100-foot range. Many fir species, such as white fir (Abies concolor) and noble fir (Abies procera), commonly grow between 100 and 150 feet tall.
A single organ or multiple organs and tissues may be affected. There are many autoimmune diseases with symptoms that range from mild rashes to life-threatening conditions that attack major organ systems. Though each disease is different, immune-system malfunction is present in all of them.rgans and tissues frequently affected include the endocrine gland, such as thyroid, pancreas, and adrenal glands; components of the blood, such as red blood cells; and the connective tissues, skin, muscles, and joints. In organ-specific disorders, the autoimmune process is directed mostly against one organ.
Basic Tissue Types. All of the various tissues of the human body can be categorized into four basic tissue types. All organs are built of these four tissues, which have consistent characteristics and arrangements from organ to organ.Thus an appreciation of the major features of these four basic tissue types can greatly simplify your understanding of the cellular composition of the many organ systems.ll organs are built of these four tissues, which have consistent characteristics and arrangements from organ to organ. Thus an appreciation of the major features of these four basic tissue types can greatly simplify your understanding of the cellular composition of the many organ systems.