Answer to Question #247491 in Human Anatomy and Physiology for Saleh

Question

1. The structure and function of macrophage.

2. The difference of three fibers of L.C.T

Answer 1

1. The macrophage is amoeba-type cell. The cytoplasm of a macrophage contains vacuoles and granules that are basophilic in nature. The nucleus shape is ovoid. The periphery of the cytoplasm contain finely granular and lacks structures like endoplasmic reticula. Ribosomes are attached to the external portion of the nuclear membrane that is continuous with the endoplasmic reticula. The dense granules in the cytoplasm are mostly secondary lysosomes that are derived from endocytic vacuoles.

The functions of macrophage includes locating of foreign bodies and use the process of phagocytosis to engulf the foreign bodies and digest them. Macrophage are also involved in muscle repair, growth and regeneration.

2. Loose Connective Tissue consist of;

(a). Ground Substance. Viscous gel with high water content. Consist of proteoglycins and glycoproteins.

(b). Reticular Fibers. They are fibers comprising of collagen type I that give the mechanical strength to the tissue.

(c). Elastic Fibers. They are fibers responsible for the flexibility of the tissue. Contain elastin and fibrillin.