Arteries
carry blood away from the heart to the capillaries; Aorta; thick muscular walls
Capillaries
permit exchange of material with the tissues; joins arterioles to venules; may be bypassed by arterivenous shunts
Veins
Return blood to the heart; Have valves that regulate flow of blood; blood flow due to skeletal muscle contraction
Superior Vena Cava
This is the superior portion of the main vessel that brings blood back to the hear; it enters the right atrium
aorta
this large vessel takes blood away from the heart; it exits the left side of the heart
Right pulmonary artery
one of the two divisions off the pulmonary trunk, this is the right artery to the lungs
right pulmonary veins
these carry oxygen rich blood to the left atrium
right atrium
This is the upper chamber on the right side
Right coronary artery
Serves the heart muscle itself, one of the two first branches off the aorta; lies on the exterior surface of the heart
right ventricle
lower right chamber of the heart
inferior vena cava
this is the inferior portion of the vessel that brings blood back to the heart; it enters the right atrium
left pulmonary artery
one of the two divisions off the pulmonary trunk; this is the left artery to the lungs
pulmonary trunk
attached to and leaves the right side of the heart; it carries oxygen-poor blood; divides into two pulmonary arteries
left pulmonary veins
these carry oxygen rich blood to the left atrium
keft atrium
the upper left chamber
left ventricle
the lower left chamber
left coronary artery
serves the heart muscle itself, one of the two first branches off the aorta; lies on the exterior surface of the heart
1st step of the blood pathway
the superior and inferior vena cava , which carry the oxygen-poor blood that is relatively high in c02, enter the right atrium
2nd step of the blood pathway
the right atrium send bloods throug the tricuspid valve to the right ventricle
3rd step of the blood pathway
The right ventricle sends blood through the pulmonary semilunar valve into the pulmonary trunk and through the pulmonary arteries to the lungs
4th step of the blood pathway
four pulmonary veins which carry oxygen-rich blood from the lungs enter the left atrium
5th step of the blood pathway
the left atrium sends blood through the bicuspid valve (mitral) to the left ventricle
6th step of the blood pathway
The left ventricle sends blood through the aortic semilunar valve into the aorta to the rest of the body
Systolic Pressure
the highest arterial pressure; 120 mm Hg; Reached during ejection of blood from the heart; Decreases with distances from the left ventricle
Diastolic Pressure
The lowest arterial pressure; 80 mmHg; Occurs when the ventricles relax; Decreases with distances from the left ventricle
Blood pressure
The pressure against a blood vessel wall, usually measured in the artery of the arm; controlled by the arterioles;
The pulmonary circuit
blood from the body is brought to the right side of the heart and sent to the lungs, where it is oxygenated and send back to the heart
The systemic circuit
the left side of the heart pumps blood to the entire body to deliver nutrients and removes wastes
Blood from the systemic circuit enters the heart and flows into the __ and ___ before being pumped into the lungs.
right atrium; and then right ventricle
blood received into the heart from the system circuit is ____-
low in oxygen and high in co2
blood moves from the atria to the ventricles through which valves
atroventricular valves
blood leaving the left ventricle enters _____
the systemic system
blood leaving the right ventricle enters______
the pulmonary system
osmotic pressure
concentrations of dissolved particles in the blood and tissues