Circulatory system 1
These vessels carry blood away from the heart.
arteries
These vessels bring blood back to the heart.
veins
These tiny vessels connect arterioles and venules.
capillaries
This type of blood has released oxygen and picked up carbon dioxide.
deoxygenated blood
This is what your blood delivers to every cell in your body.
oxygen and nutrients
Capillaries allow for the exchange of these two gases.
oxygen and carbon dioxide
You can increase your capillaries by doing this regularly.
exercise
These are smaller branches of arteries.
arterioles
These are smaller branches of veins.
venules
The heart is about the size of this.
a fist
This is the term for how oxygen naturally moves from a high to low concentration in blood.
diffusion
This type of vessel has the thickest walls________.
They have thick walls because they carry blood under this ____________.
arteries
high pressure
This side of the heart pumps blood to the lungs.
right side
This side of the heart pumps blood to the body.
left side
This red pigment in blood carries oxygen.
hemoglobin
These upper chambers receive blood into the heart.
atria
These lower chambers pump blood out of the heart.
ventricles
Blood leaves the left ventricle and enters this artery.
aorta
These four parts of the heart open and close to control the direction of blood flow.
valves
The pulmonary artery is unique because it carries this kind of blood away from the heart.
deoxygenated blood
The main incoming blood vessels are called _________
superior vena cava-This large vein collects blood from the head, neck, upper extremities, and chest, returning it to the right atrium of the heart.
inferior Vena Cava- This vein carries blood from the lower body, including the legs, abdomen, and pelvis, also back to the right atrium of the heart.
The heart is like two ________: one sends blood to the lungs to get oxygen, and the other sends oxygen-rich blood to the body. Both sides work together at the same time, making the heart a powerful _____________ that never rests.
pump
double pump
This valve separates the right atrium from the right ventricle.
This valve separates the left atrium from the left ventricle.
tricuspid valve
bicuspid valve
These two blood vessels are exceptions to the rule: one is a vein that carries oxygenated blood, and the other is an artery that carries deoxygenated blood.
pulmonary vein
pulmonary artery
n most of the body: Arteries carry oxygen-rich blood away from the heart. Veins carry oxygen-poor blood back to the heart.
But in the lungs, there’s a special rule!
The pulmonary artery carries oxygen-poor blood from the right side of the heart to the lungs.
The pulmonary vein carries oxygen-rich blood from the lungs back to the left side of the heart.
These four valves keep blood moving in one direction through the heart.
tricuspid, pulmonary, mitral, and aortic valves