Identify the connective tissue based on the given information. a. Excessive pulling of this tissue causes sprain. b. It is highly elastic and has considerable strength but contains very little matrix.
Answers
Answer:
Explanation:
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Type # 1. Loose Connective Tissue:
(A) Areolar Tissue (= Loose connective tissue):
This tissue is most widely distributed connective tissue in the animal body.
Structure:
It is named so because it takes the form of fine threads crossing each other in every direction leaving small spaces called areolae.
The areolar tissue consists of ground substance, the matrix, white, yellow and reticular fibres and cells like fibroblasts, mast cells, macrophages (= histocytes or clasmatocytes), lymphocytes, plasma cells, mesenchyme cells, chromatophores.
Fat cells can be seen in small groups. Description of matrix, fibres and cells has already been given in the general structure of connective tissue.
Location:
As stated earlier, the areolar tissue is the most widely distributed connective tissue in the body. It is present under the skin as subcutaneous tissue in between and around muscles, nerves and blood vessels in sub-mucosa of gastrointestinal tract and respiratory tract, in the bone marrow, between the lobes and lobules of compound glands and in mesenteries and omenta.
It also forms the internal frame work (= stroma) of many solid organs. In fact it forms packing nearly in all organs.
Areolar TissueFunctions:
To bind parts together is the primary function of areolar tissue. Other functions are to provide strength, elasticity, support to the parts where this tissue is present. It also provides rapid diffusion of materials and migration of wandering cells towards areas of infection and repair.
(B) Adipose Tissue:
It is a fat storing connective tissue.
Structure:
The adipose tissue consists of several spherical or oval adipose cells (= adipocytes or fat cells; Fig. 7.16). Each adipose cell contains fat globules, due to which the nucleus and the cytoplasm are displaced to the periphery.
These cells are often called signet ring cells because they resemble a signet rang when seen in cross section. There are two types of adipose tissue: white (or yellow) fat and brown fat. White fat contains large adipose cells, each having a single large fat globule and hence, called monolocular.
Adipose Tissue
The cytoplasm in these cells is pushed to a peripheral layer containing nucleus. The adipose cells of brown fat are multilocular, each cell with several small fat globules. Brown colour is due to iron containing cytochrome pigment in fat.
Brown fat found in those mammals which have an oxidation power 20 times more than that of yellow fat because brown fat cells are loaded with a large number of mitochondria.
Brown fat is found in hibernating mammals such as rats and other rodents and in new-born human babies. The fibres are few in number and form a loose network for supporting the fat-laden cells. If these cells are treated with alcohol, the fatty substance is dissolved and the cells become vacuolated.
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Answer:
ligaments
Explanation: