circulatory

• oxygenated blood is bright red, usually found in arteries, and always contains oxygen and nutrients
• deoxygenated blood is blue, always contains carbon dioxide and waste (low % of O2), and usually is found in veins
• t/f : veins (usually) bring blood towards the heart?

  true
• the heart is muscular organ made of cardiac muscle that is located just behind and left of the sternum, and is about the size of a fist
• the heart's main function is to pump blood
• arteries always travel away from the heart, usually carries oxygenated blood, and are bright red
• veins always carry blood towards the heart, usually containing deoxygenated blood, and are blue
• what are the two exceptions for the vein and artery rules?

  pulmonary artery and pulmonary vein
• capillaries are tiny blood vessels that surround organs, and these are where diffusion takes place
• pulmonary circulation is when blood starts in the right side of the heart and travels up to the lungs with deoxygenated blood, picks up oxygen and nutrients, drops off carbon dioxide and waste, then goes back down to the left side of the heart
• t/f : pulmonary circulation involves blood going to the body?

  false
• t/f : systemic circulation begins with oxygenated blood?

  true
• t/f : this is the illustration for pulmonary circulation?

  true

  
• systemic circulation is when oxygenated blood in the left side of the heart travels down to the body where oxygen and nutrients are dropped off and carbon dioxide and waste are picked up, then travels back to the right side of the heart with deoxygenated blood
• the circulatory system is transportation system that transports oxygen and nutrients to all cells in the body and picks up carbon dioxide and waste to bring it to the lungs to be exhaled
• what kind of system is the circulatory system (starts with a t)?

  transportation
• both circulatory systems (pulm. and system.) start in the heart and end in the heart
• the aorta is the main artery in the circulatory system, it carries oxygenated blood to the whole body except for the lungs
• the vena cava is the large vein that brings deoxygenated blood into the heart
• the ______ vena cava brings deoxygenated blood from the upper body?

  superior
• t/f : the two sides of the heart are completly separated, the only connection being the lungs?

  true
• the heart has four chambers: the right and left atrium, and the right and left ventricle
• the atriums' function is to receive blood from either the body (right) or the lungs (left)
• why does the left ventricle have most muscular wall?

  it pumps blood to the ENTIRE body
• the ventricles' function is to pump blood into either the lungs (right) or the body (left)
• what keeps blood from getting stuck in our veins due to gravity?

  valves
• what makes the sound of the heartbeat?

  valves shutting
• the valves control the flow of blood in one direction
• the four valves in order are the tricuspid, pulmonary, mitral, and aortic
• the pulmonary artery carries blood away from heart, to the lungs, but carries deoxygenated blood
• the pulmonary vein carries blood towards the heart, from the lungs, but contains oxygenated blood
• what structure in the blood flow is after the mitral valve?

  left ventricle
• what structure in the blood flow goes after the right ventricle?

  pulmonary valve
• the function of the circulatory system is accomplished by the heart and the blood vessels
• what is the last structure touched before blood leaves the heart?

  aorta
• when blood touches the tricuspid valve, is it deoxygenated or oxygenated?

  deoxygenated
• what structure is this?

  right atrium

  
• what structure is this?

  inferior vena cava

  
• what structure is this ?

  pulmonary artery

  
• what structure is this ?

  aortic valve