Circulatory System Flashcards
artery
a tube that carries blood away from the heart
blood
the fluid pumped by the heart around the circulatory system
blood plasma
a blood component made of water with dissolved nutrients and wastes
blood vessel
any tube that blood flows through
capillary
a tiny blood vessel where substances pass to and from the blood
carbon dioxide
a gas produced as waste when cells release energy
circulation
the movement of blood around the body
de-oxygenated
having low levels of oxygen
diffusion
the movement of molecules from an area of high to low concentration
haemoglobin
a protein in red blood cells that transport oxygen
heart
a muscular organ that pumps blood around the body
left atrium
a heart chamber that receives blood from the lungs
left ventricle
a heart chamber with thick walls that pumps blood to the body
organ
a body part that performs a specific function
oxygen
a gas needed by cells to release energy
oxygenated
having high levels of oxygen
platelet
a blood component that helps form clots to stop bleeding
red blood cell
a blood component that transport oxygen
right atrium
a heart chamber with thick walls that receives blood from the body
right ventricle
a heart chamber with thick walls that pumps blood to the lungs
valve
a structure that only allows flow in one direction
vein
a tube that carries blood back to the heart
systematic circulation
oxygenated blood is pumped around the entire body
pulmonary circulation
deoxygenated blood is pumped separately to the lungs
