cardiovascular system (summarized form)

Heart

The muscular pump that creates pressure and keeps blood moving.

Blood vessels

The network of arteries, veins, and capillaries that carries blood throughout the body.

Blood

The transport medium that carries oxygen, nutrients, hormones, immune cells, and wastes.

oxygen, nutrients, hormones and waste products

what does blood carries:

Right atrium (RA), Right ventricle (RV), Left atrium (LA), Left ventricle (LV)

the heart has 4 chambers:

Right atrium (RA)

receives deoxygenated blood from the body

Right ventricle (RV)

Pumps deoxygenated blood to the lungs

Left atrium (LA)

Receives oxygenated blood from the lungs

Left ventricle (LV)

Pumps oxygenated blood to the entire body

Body - Right side of the heart - Lungs - Left side of the heart -- Body again

Blood keeps moving in one continuous circle. What is this loop:

Low oxygen and High carbon dioxide

Deoxygenated blood contains:

Deoxygenated blood

This blood must return to the heart.

Superior Vena Cava

Its function is to carry deoxygenated blood from the upper part of the body to the right atrium.

Inferior Vena Cava

Its function is to carry deoxygenated blood from the lower part of the body to the right atrium.

right atrium

is the first chamber that receives blood returning from the body.

right atrium

Its only job is to collect deoxygenated blood.

right ventricle

Blood moves from the right atrium into the ____

right ventricle

is the first chamber that acts as a pump.

right ventricle

When it contracts, it pushes blood to the lungs.

oxygenation

In the lungs, carbon dioxide leaves the blood and oxygen enters the blood. This process is called

left atrium

The oxygen-rich blood returns from the lungs to the ___

left ventricle

Blood moves from the left atrium into the ___

left ventricle

it is the strongest chamber of the heart.

left ventricle

It contracts forcefully and pumps blood through the aorta

aorta

left ventricle contracts forcefully and pumps blood through the ____

aorta

the largest artery in the body

every organ

The aorta sends blood to:

Atria

it receives blood.

Ventricles

it pumps blood out.

pulmonary veins

After blood picks up oxygen in the lungs, it returns to the heart through the ____

Left ventricle

is the main pumping chamber.

Valves

are flaps of tissue that allow blood to move in only one direction.

Tricuspid valve

valve between right atrium and right ventricle

Pulmonary valve

valve between right ventricle and pulmonary artery

Mitral (bicuspid) valve

valve between left atrium and left ventricle

Aortic valve

valve between left ventricle and aorta

tricuspid valve

Blood moves from the right atrium into the right ventricle through the ___

first heart sound (S1, “lub”)

the tricuspid valve closes and This closure contributes to the ____

pulmonary valve

The right ventricle pumps blood through the ____ into the pulmonary artery.

pulmonary artery

The right ventricle pumps blood through the pulmonary valve into the ____.

pulmonary valve

This sends blood to the lungs.

alveoli (air sacs)

In the lungs, blood flows through tiny capillaries surrounding the ____.

pulmonary veins

The oxygen-rich blood returns through the ___

left atrium

The oxygen-rich blood returns through the pulmonary veins and enters the ___

mitral (bicuspid) valve

Oxygenated blood moves from the left atrium into the left ventricle through the___

Left ventricle

This is the strongest contraction in the heart.

Left ventricle

it must pump blood through the entire body.

aortic valve

The left ventricle pumps oxygenated blood through the ____ into the aorta.

aorta

The left ventricle pumps oxygenated blood through the aortic valve into the ___.

Brain, Heart, Kidneys, Liver, Muscles, Skin, Legs, Every organ

The aorta distributes blood to the ___

left ventricle

After blood is ejected, the ___ begins to relax.

relax

After blood is ejected, the left ventricle begins to ___.

semilunar valves

it is to prevent blood from flowing backward into the ventricles after the ventricles have pumped blood out.

Atrioventricular valves

it prevents blood from flowing backward into the atria when the ventricles contract