resistance to blood flow (Marieb, Hoem, 2013 page 669). The bicuspid valve stops blood from going back to the left atrium when the left ventricle contracts. When the ventricles contract, the oxygenated blood goes through the aorta and too the rest of the body. At the base of the aorta there are 3 semilunar vales which stops the blood from returning to the ventricle when it relaxes. There are two coronary arteries that comes out from the aorta above the semi-lunar valves. It is because of these arteries the heart is able to receive oxygenated blood and nutrient (Botany ND, para. 7)

Question 4- types of blood circulation
The three types of blood circulation are:
1. Systematic circulation (greater)- from the left ventricle, the blood flows through different parts of the body to the right …show more content…
Pulmonary circulation (lesser)- through the lungs, the blood begins to flow from the right ventricle into the left atrium. (Mananatomy 2011, para. 3)
3. Coronary Circulation- where blood is supplied to the heart. This is done since the heart needs to be nourished. (Marieb. Hoehn 2013, p. 668)

Question 5- definitions
a. Mean arterial blood pressure: This is the pressures that forces the blood into the tissue. (Marieb. Hoehn 2013, p. 703)
b. Stroke Volume: The stroke volume is the amount of blood which is pumped out by the ventricle in a single beat (Marieb. Hoehn 2013, p. 681)
c. Cardiac Output: As stated by Marieb. Hoehn 2013, p. 681 “Amount of blood pumped out by each ventricle in one minute”
d. Peripheral Resistance: Peripheral Resistance is when friction occurs in the peripheral circulation away from the heart (Marieb. Hoehn 2013, p. 702)

Question 6- What is Myocardial Infarction?
Myocardial infarction occurs when there is an interruption of blood supply to an area with dead tissues in the myocardium. Myocardial infarction is otherwise known as a Heart attack (Marieb. Hoehn 2013, G-15). The dead tissues in the myocardium are replaced by non-contractile scar