Unit 8 - Cardiovascular and Respiratory Systems Flashcards
Myocardium
Specialized muscle tissue that forms the heart
Pulmonary Circulation (The main function of the right side of the heart)
The main function of the right side of the heart is to pump deoxygenated blood which has just returned to the body to lungs
Systemic Circulation (The main role of the left side of the heart)
to pump oxygenated blood which has just returned from the lungs, to the rest of the body
Arteries
Blood vessels that carry blood away from the heart
Systemic Circulation (Arteries)
Oxygenated blood from left side of the heart towards body tissues
Pulmonary circulation (Arteries)
Arteries carry deoxygenatted blood from right side of the heart towards the lungs
Veins
Blood vessles that carry blood towards the heart
Capillaries
→ Smallest of the blood vessles
Enable to exchange of water, O2, CO2, nutrients and waste substance between blood and the tissues of the body
Arterioles
→ Vessles in the blood circulation system that branch out from arteries and lead to capillaries where gas exchange eventually occurs
Surrounded by smooth muscle, they are the primary site of vascular resistance
Systemic Circulation (Veins)
Deoxygenated blood towards the right side of the heart from body tissues
Pulmonary circulation (Veins)
Arteries carry oxygenatted blood towards the left side of the heart
Capillaries
→ Smallest of the blood vessles
Enable to exchange of water, O2, CO2, nutrient
Electrocardiogram - Atrial depolorization (P wave):
Relaxation of atria
Electrocardiogram
→ Detects rate of heart beat
When the line goes flat it is called fibrulation
Electrocardiogram - Ventrical Depolarization (QRS):
Action potential in other direction and contraction of ventricles
Coronary Circulation
The system of vessels that supply essential materials via blood to the heart muscle itself
Electrocardiogram - Ventrical Repolarization (T wave):
Relaxation of ventricles
Effects of Training on Q and SV
Smoking,
Elevated Blood Lipids, Bad Cholesterols
Hypertension,
Family history,
Physical inactivity.