Cardiovascular System Flashcards
Arteries
Vessels that carry blood away from the heart.
Blood Vessels
channels that carry blood throughout your body.
Capillaries
Tiny vessels that branch off from arteries to deliver blood to all body tissues.
Deoxygenated
remove oxygen from
Heart
A muscular pump that forces blood around the body.
Oxygen
A chemical element with the atomic number 8
Oxygenated
supplied, treated, or enriched with oxygen.
Pulmonary circulation
transports deoxygenated blood to the lungs to get oxygen, and then back to the heart.
Systemic circulation
carries oxygenated blood away from the heart to the tissues and cells, and then back to the heart.
Veins
Vessels that bring blood back to the heart.
Size of heart
size of a fist and shaped like an upside-down pear,
How many chambers does the heart have?
4 chambers
Location of heart
located in the mediastinum in the center of the chest cavity;
Apex
the tip of left ventricle
Endocardium
is the innermost layer of the heart and lines the chambers
Myocardium
It is involuntary, striated muscle that constitutes the main tissue of the wall of the heart.
Pericardium
It holds the heart in place and helps it work properly.
Atria
are the receiving chambers of the heart.
Ventricles
are the pumping chambers. They have a much thicker myocardium and their contraction ejects blood out of the heart and into the great arteries.
Tricuspid Valve
it controls the opening between the right atrium and the right ventricle.
Pulmonary valve
this valve prevents blood that has been ejected into the pulmonary artery from returning to the right ventricle as it relaxes.
Mitral Valve
Blood flows through this atrioventricular valve to the left ventricle and cannot go back up into the left atrium.
Aortic Valve
Blood leaves the left ventricle through this valve and cannot return to the left ventricle.
