CV System Functions
The CV system supplies the body's cells with ____________ and _____________
oxygen, nutrients
The upper chambers of the heart are called _________.
atrium, atria
The inner lining of the heart is the ________________.
endocardium
What vessels bring blood to the right atrium?
inferior and superior vena cava
The valve between the left atrium and the left ventricle is the __________.
mitral valve
Some blood cells help the body fight ______________.
infection
The lower chambers of the heart are called ______________.
ventricles
The thickest layer of the heart is the ______________
myocardium
The right ventricle pumps blood into the _____________ artery.
pulmonary
When the blood leaves the heart it travels through arteries into smaller arteries. The name for these smaller arteries is __________.
arterioles
The CV system removes ____________ and ___________ from the body's cells.
carbon dioxide, wastes
The chambers of the heart that pump unoxygenated blood are the ______________ and _________________.
right atrium and right ventricle
The outer layer of the heart is the ________________.
pericardium
The left ventricle pumps blood into the ____________.
aorta
The name of the very small vessels where exchange actually takes place is ______________________.
capillaries
Some blood cells help stop bleeding by forming ___________.
clots
The chambers of the heart that pump oxygenated blood are the _______________ and ________________.
left atrium and left ventricle
What type of tissue makes up the myocardium?
muscle tissue
The valve between the right atrium and right ventricle is the _______________.
tricuspid valve
The name for the small veins is ___________.
venules
The blood also delivers _______________ or ______________.
oxygen, nutrients, hormone
The chamber of the heart with the thickest walls is the _______________________.
left ventricle
The middle layer of the heart is the ______________.
myocardium
The blood leaves the lungs and travels back to the left side of the heart through the _______________vein.
pulmonary
The valves of the heart ensure that blood flows in _____ ____________.
one direction