4.- The Circulatory System - Diseases

Diseases:

Myocardial infarction (heart attack): The blockage of blood flow that would result death of muscle tissue. The blockage occurs in one of the arteries of the heart. The heart can die if much destroys your muscle tissue.

Symptoms:
- Fatigue
- discomfort
- Chest discomfort

Hypertension: Occurs when there is a lot of pressure in the blood vessels. This can cause health problems and damage blood vessels.
When the heart beats, it pushes blood through the arteries and blood push harder against the walls of the arteries.

Symptoms:
- Chest pain
- Fatigue or confusion
- Difficulty breathing
- Blood in the urine

Ischemia: When the flow of blood, which contains oxygen, fails in some parts of the body.
And serious cardiac ischemia when the heart does not receive enough blood flow, blood oxygen will be insufficient to maintain the muscle.

Symptoms:
- Difficulty breathing
- Fatigue
- Heartbeat

Webgraphy:

https://www.hypertension.ca/en/hypertension/what-do-i-need-to-know/what-is-high-blood-pressure

http://www.webmd.com/hypertension-high-blood-pressure/guide/hypertension-symptoms-high-blood-pressure

https://www.dmu.edu/medterms/circulatory-system/circulatory-system-diseases/

http://www.texasheart.org/HIC/Topics/Cond/silent.cfm