A. When we think of structure, we tend to consider only thosefeatures a tissue does have and how the presence of the featureallows for function. But we can also think in reverse and considerfeatures a tissue does not have. The lack of a feature can alsoallow the tissue to function in a certain way. Consider avasculartissues. Using either epithelial tissue or cartilage, can you thinkwhy lacking blood vessels is necessary for its function? B. Rankthe following in terms of level of protection. #1 being the mostprotective. Explain your ranking: Stratified cuboidal Stratifiedsquamous Pseudostratified columnar Stratified columnar C.Anyepithelial tissue coating the vessel wall could theoreticallyreduce friction. So why is simple squamous the only one that isactually located coating a vessel wall? Meaning, why is there notsimple cuboidal or stratified squamous coating a vessel wall toreduce friction? D. The ducts of some glands contain simplecuboidal while the ducts of other glands are stratified cuboidal.Both of these tissues allow for secretion so why do some havesimple but others have stratified cuboidal? E. How does thestructural difference between hyaline cartilage, elastic cartilage,and fibrocartilage allow for functional differences between thethree types of cartilage? F. Why do you think only cartilage andbone have cells in lacunae? G. Dense CT is vascular but poorlyvascular so they heal very slowly, sometimes not at all. This iswhy injuries to tendons/ligaments often require surgery to repairthem. Since cartilage is avascular, most, if not all, cartilageinjuries require surgery to repair them. However, epithelial tissueis avascular…but has a tremendous ability to heal. Epithelialtissue is one of fastest healing tissues. Since both epithelialtissue and cartilage are avascular, why does one heal very fast butthe other not at all. Healing is a functional feature and, as weknow, this function must be due to structure. Examine the structureof both tissues. H. How does the structural differences betweendense regular and dense irregular allow for the functionaldifferences between them?