The tissue responsible for vasoconstriction of blood vessels is the <span>tunica externa</span>
        
             
        
        
        
We just here just to die honestly
        
             
        
        
        
Biostatistics is concern with statistical
data relating to living organisms that answer research questions in medicine, biology and
public health. 
Moreover, it is a tool that gives us answers on things that are
uncertain such as how a new drug works, what causes cancer and other diseases,
and how long a person with a certain illness is likely to survive.
 
        
             
        
        
        
Department of Health and Human Services recommends these exercise guidelines: Aerobic activity. Get at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous aerobic activity a week, or a combination of moderate and vigorous activity.