How would defective elastic fibers impair the functions of the organs and tissues?

Elastic fibers are specialized type of fibers that are found in the blood vessels.  They exhibit proteins named as elastin, fibrin and microfibrils that provides structural and mechanical support to the blood vessels and provides elasticity and resilience to the tissues. The elasticity of the blood vessels tissue is important because the pressure inside the blood vessel may vary according to the speed of flow of the blood. The high blood pressure may exert force on the walls of the blood vessel, this may lead to rupture of blood pressure and can lead to cardiac arrest.

Therefore, defective elastic fibers may exhibit lack of elasticity which may lead to rupture of the blood vessels, hence may affect the function of the heart, kidney, lung or any other vital parts of the body.  

answer is a

explanation:

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.