1. Arteriosclerosis is the hardening of the arteries due to the plaque buildup and causes blockage of the blood flow. So if Arteriosclerosis happens in the carotid arteries it will reduce the blood flow and in return less oxygen will go to the brain. Once you deprive your brain of enough oxygen it will cause major problems and may lead to stroke and/or brain damage. 2. Rigor mortis causes the body to go stiff. It is due to an influx of calcium ions into muscle cells and promotes the cross-bridge attachment between actin and mysin. So the muscle contracts but is unable to be released due to no ATP available. So if there was an increase of ATP in the mucles exhibiting rigor mortis, the muscles will most likely relax due to ATP releasing the myosin from the actin. So the muscles that are exhibiting rigot mortis will not be as stiff and will relax back from normal. 3. Congestive heart failure is due to the heart not being able to pump as good as it used to and it is unable to deliver blood to certain parts of the body due to its insufficiency to pump. So when she sees swollen feet and ankles it may be due to collection of fluids due to gravity and the heart being unable to pump the blood strong enough. So congestive heart failure causes poor circulation maintly to and from the extremities. The swelling is associated with heart failure and is called edema, which is caused by fluid accumulating in the tissue, such as blood seeping through blood vessels into the tissue due to a back up of blood from a weak heart being unable to pump blood fast enough. 4. Since Hurdler is an athlete he has a very low heart rate which in return means his heart pumps more blood in one beat then says someone with a heart rate of 72. This is what stroke volume is so for an athelete as bpm decrease usually stroke volume increases. So I think his stroke volume should be around