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Circulatory system

Honors bio flashcards about the circulatory system

TermDefinition
adenosine triphosphate energy molecule also known as ATP
Vena cava deoxygenated blood enters the heart through either the superior vena cava or inferior vena cava
right atrium this is where the deoxygenated bloods goes to once it enters the vena cava
Atrioventricular valve the right atrium contracts and pushes the deoxygenated blood through this valve, into the right ventricle
Tricuspid valve another name for the atrioventricular valve, due to its shape
right ventricle this is the second holding place for the deoxygenated blood
pulmonary artery when the right ventricle contracts, it sends the deoxygenated blood into the pulmonary artery through the pulmonary valve
Blood to the lungs deoxygenated blood enters the lungs through the pulmonary arteries
Right side of the heart deoxygenated
Aorta biggest blood vessel in the body
Circulatory system transports nutrients, oxygen, and other substances throughout the body, and removes wastes from tissues
Upper chambers/atrium receives blood from body or lungs
Lower chambers/ventricle pumps blood out of the heart and into the body
Coronary arteries branch out from the aorta, supply blood to the heart, are relatively narrow
Heart attack heart cells run out of oxygen and could die, usually happens during a coronary artery block
Pulmonary circulation oxygen poor blood being pumped into the right side of the heart then to the lungs
Systemic circulation Left side of the heart pumps oxygen rich blood to the rest of the body through the aorta
Artery structure large vessels, thick elastic wall helps withstand powerful pressure
Artery function carry blood from heart, all carry oxygen rich blood
Vein structure flows against gravity through large veins, veins contain valves, contracting skeletal muscles squeeze vein pushing blood toward heart, valve farthest from heart closes to ensure blood flows in one direction
Vein function blood returns to heart through veins
Capillary structure smallest blood vessels, very narrow, thin walls
Capillary function side streets/alleyways of circulatory system, blood passes through them in single files, allows nutrients and oxygen to diffuse from blood into tissues
Created by: nikolaaamazur