<span>A communicable disease is a disease that can be
passed from person to person. It can also occur from an animal to a person or
vice versa. Airborne viruses, bacteria, blood, and bodily fluids can cause the
spread of these diseases. When things are infectious or contagious it also
refers to communicable diseases. The most common communicable disease is the flu,
which can easily spread in an enclosed environment with a recycled circulating
air (e.g. air-conditioning). Infectious disease caused by blood contact like
HIV/AIDs are also dominant in society. </span>
Muscular strength is how much you can lift/push/pull, ect. Muscular endurance is how long you can do something with your muscles. Like if you have to put your are straight out in front of you and hold a 25 pound dumbbell. Your will get tired and give out. the more Muscular endurance you have the longer you can do something with your muscles.
What??? is this a question? if so, what are you asking?
That is correct- the heart pumps and the smooth muscles of arteries contract (also called constriction)
