BIOS 100 Cardiovascular

The heart, all of the body's blood vessels, the blood, and the bone marrow tissue in which red blood cell are formed.

To pump blood for heart and blood is the fluid transport medium.

Oxygen, carbon dioxide, nutrients, vitamins, hormones, waste products, and immune system cells and proteins along with heat to body's core and extremities.

• Respiratory System (oxygen and carbon dioxide transport)
• Digestive System (nutrient and waste product transport)
• Endocrine System (hormone transport)
• Excretory System (blood filtering)

• blood circulates heart and lungs with reult that blood is oxygenated
• Also managed by right side of the heart.

• Blood circulates between the heart and rest of body
• Managed by left side of heart

Blood returens to heart entering right atirum.>enters right ventricle>blood is pumped from here to lungs> blood returns to left atrium from lungs

blood returns to left atrium from lungs>blood enters left ventricle>blood is pumped from left ventricle to body> blood returns to heart from body, enters right atrium

• top two atria
• bottom two ventricles

• (right atrium and ventricle pulmonary oxigenation)
• (left atrium and ventricle  systemic circulation delivery oxygented blood to body)

arteries and arteioles (systemic circuit, arteries carry oxygenated blood and veins carry deoxygenated blood)

• venules and veins
• ◦In the pulmonary circuit, arteries carry deoxygenated blood and veins carry oxygenated blood

The smallest vessels site of gas, thermal, molecule exchange. All action occurs here

• thick, elastic, muscular walls.
• Elasticity important in maintaing blood pressure and volume

• increases blood pressure and velocity (factor for stroke, heart attacks,heart failure, aneurysms, and is a cause of chronic kidney disease).
• Also makes exchanges at capallaries less efficient

• capillary beds feed back into the body’s system of veins that returns blood to the heart.
• Arteries near the heart branch intosmaller arterioles, which feed into the delivery vehicles of the cardiovascularsystem

• into the interstitial fluid that surrounds both the capillaries and nearby cells after which the materials move into cells.
• Simulatneously having CO2 and wastes move from cells into the capillaries.

By precapillary sphincters as wells as thoroughfare channels that allow direct flow of blood

Blood pressure is zero, so flow is aided by skeletal muscles contracting to squeeze blood to heart. Contain valves to prevent backflow.