what is atria? - ✔️✔️upper chambers of the heart that receives blood from the blood vessels
what is blood pressure? - ✔️✔️the pressure exerted by blood on the walls of the blood vessels. Usually
measured in the systemic circuit
what is the electrocardiogram? - ✔️✔️a recording of the summed electrical events of the cardiac cycle
What is the Flow (rate)? - ✔️✔️the volume of blood that passes one point in the cardiovascular system
per unit time
what is a heart valves? - ✔️✔️connective tissue valves that prevent the backflow of blood in the heart
what is the pulmonary circuit? - ✔️✔️the portion of circulation that carries blood to and from the lungs
what is the systemic circuit? - ✔️✔️portion of the circulation that carries blood to and from most tissues
of the body
what is the ventricle? - ✔️✔️lower chambers of the heart that pump blood out to the body
what is the requirement for a circulatory system? - ✔️✔️is a consequence of increasing size and
complexity of multicellular organisms
what does the circulatory system provide? - ✔️✔️a concentration gradient from the blood to cells for
nutrients and in the opposite direction for waste
what is the primary role for the circulatory system? - ✔️✔️the distribution of dissolved gases and other
molecules for nutrition, growth and repair, while simultaneously removing cellular wastes
, what are the three basic functional parts of the circulatory system? - ✔️✔️heart, blood, blood vessels
what is the secondary roles for the circulatory system? - ✔️✔️- chemical signaling to cells by means of
circulating hormones or neurotransmitters
- dissipation of heart by delivering heat from the core to the surface of the body
- mediation of inflammatory and host defense response against invading microorganisms
what were the original thoughts on what the veins and arteries do? - ✔️✔️- thought that the veins had its
origin in the liver and was distributed throughout the body
- the arteries contained air from the lungs and the 'spirits' which flowed to the heart, distributing heat
and life to all parts
what three types is the transport in the circulatory system divided into? - ✔️✔️- materials entering the
body
- materials moved from cell to cell
- materials leaving the body
what does the heart do? - ✔️✔️a dual pump driving blood in two serial circuits
what is the two serial circuits that are apart of the heart? - ✔️✔️- pulmonary circuit
- systemic circuit
what carries the blood away from the heart? - ✔️✔️arteries
what carries the blood back to the heart? - ✔️✔️veins
what are the smallest vessels where transport takes place? - ✔️✔️capillaries
what ensures that the blood flows in one direction? - ✔️✔️a system of valves in the heart and veins
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