Basics of the Cardiovascular System
This system moves blood, oxygen, nutrients, hormones, and waste throughout the body.
Cardiovascular system
The heart is roughly the size of a ____ and located slightly to the left between the lungs.
Fist
These vessels carry blood away from the heart.
Arteries
These cells carry oxygen using hemoglobin.
Red blood cells
The cardiovascular system delivers ____ and nutrients to cells so they can produce energy.
Oxygen
The three main parts of the cardiovascular system are the heart, ___, and blood.
Blood vessels
The right atrium receives this kind of blood from the body.
Oxygen-poor blood
These tiny vessels allow oxygen and nutrients to pass from blood into cells.
Capillaries
These cells help fight infections and protect the body.
White blood cells
This waste product is removed from the body by the cardiovascular system.
Carbon dioxide
The cardiovascular system works continuously to keep ____ alive and functioning properly.
Body cells
This chamber of the heart pumps oxygen-rich blood out to the body.
Left ventricle
These vessels return blood to the heart and often have valves to prevent backward flow.
Veins
These help stop bleeding by forming clots.
Platelets
The cardiovascular system helps regulate _____ by distributing heat throughout the body.
Body temperature
The cardiovascular system keeps the body connected and ____, meaning balanced and stable.
Homeostasis
____ prevent blood from flowing backward.
Valves
The largest artery in the body, which branches to deliver blood to every organ, is called this.
Aorta
This is the liquid part of blood that carries nutrients, hormones, and waste.
Plasma
By transporting ____ , the cardiovascular system controls processes like growth, metabolism, and stress response.
Hormones
This fluid is transported throughout the cardiovascular system to deliver nutrients and oxygen.
Blood
Blood flows from the right ventricle to the lungs through the _____ arteries.
Pulmonary
Capillaries are extremely thin to allow ____ and ____ exchange between blood and cells.
Gas and nutrient exchange
Blood is essential for keeping the body stable and _____ which allows all organs to function.
Functioning properly
This system is supported by moving white blood cells through the bloodstream.
Immune system