Subclavian Vein

We just learned about the superior vena cava vein that brings deoxygenated blood into the heart from above the heart.

That vein is connected to the left and right subclavian veins which go across the chest.
One goes to the left, and one goes to the right.

These veins bring deoxygenated blood from the chest area to go back to the heart.


(from: wikipedia - subclavian vein)


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Superior Vena Cava

We just learned that the inferior vena cava vein brings deoxygenated blood back from the lower part of the body to the heart.

There is another large vein called the superior vena cava that brings deoxygenated blood down from the head area toward the heart.

When you're talking about the human body, superior means above, and inferior means below.


(from: wikipedia - superior vena cava)


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Inferior Venae Cavae

We just learned that the iliac veins bring deoxygenated blood from the pelvis area back toward the heart.

Next the blood goes into a large vein called the inferior venae cavae.
This vein goes all the way up to the heart and drops off the deoxygenated blood.

(from: wikipedia - inferior venae cavae)


Kid Facts - Blast from the past: Transverse Colon

Iliac Veins

We've now learned about all of the veins that come up from the foot and up the leg.

The Plantar and Dorsal digital veins in the toes go up to the Metatarsal Veins and Dorsal venous arch in the foot.
The Great Saphenous Vein goes all the way from the ankle up to the pelvis.
The Small Saphenous Vein goes from the ankle up to the Tibial and Fibular veins in the lower leg, to the Popliteal Vein in the knee, and then the Femoral Vein in the thigh.

All of those veins bring deoxygenated blood from the toes up and out of the legs.

After the legs, the blood goes to the iliac veins in the pelvis area right above the legs.

(from: wikipedia - external iliac vein)


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Femoral Vein

We just learned about the Popliteal Vein that brings deoxygenated blood from the knee area back toward the heart.

After the popliteal vein, the blood goes into the femoral vein in the thigh by the femur bone.
This brings blood up through your thigh to your hip area.


(from: wikipedia - femoral vein)


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Popliteal Vein

We just learned about the Fibular Vein which brings deoxygenated blood from the lower leg up to the upper leg.

Another vein that is in the knee area is called the popliteal vein.


(from: wikipedia - popliteal vein)


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Fibular Vein

We just learned about the tibial vein that brings deoxygenated blood back to the heart.

Another vein in the lower leg right next to the tibial vein is the fibular vein, sometimes called the peroneal vein.

(from: wikipedia - fibular artery)


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Tibial Veins

We just learned about the small saphenous vein.

Some other veins that brings deoxygenated blood back toward the heart are the tibial veins.

There are two types of tibial veins, anterior and posterior.
The word anterior means in the front, and posterior means in the back.
So the anterior tibial veins are in the front part of your leg by your tibia bone, and the posterior tibial veins are in the back part of your leg by your tibia bone.

(from: wikipedia - posterior tibial vein)


Kid Facts - Blast from the past: Ileum

Small Saphenous Vein

We just learned about the great saphenous vein that brings deoxygenated blood from the foot up the leg toward the heart.

Another big vein in the foot and leg is the small saphenous vein.

Even though it's name says small, the vein is very big.
It goes from the outside of your foot, then up behind your ankle and up the back of your leg.

(from: wikipedia - small saphenous vein)


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Great Saphenous Vein

We just learned about the Dorsal Venous Arch that helps bring deoxygenated blood from the foot toward the heart.

That vein connects to another very big vein called the Great Saphenous Vein.

This vein goes all the way from your foot up your leg to your hip.
It is the longest vein in the human body.


(from: wikipedia - great saphenous vein)


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Dorsal venous arch

We just learned about the Metatarsal Veins.

Another vein on your foot that brings deoxygenated blood back to your heart is called the dorsal venous arch.

This vein is on the top of your foot, going across from the left to the right.
Sometimes you can see this vein puffed up a little on top of the foot. It looks like a blue colored tube under your skin.

(from: wikipedia - dorsal venous arch of the foot)


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Metatarsal Veins

We just learned about the digital veins in the foot that bring used up deoxygenated blood from the toes back toward the heart.

After the digital veins, the blood goes to the metatarsal veins.

There are two, the dorsal and plantar.
Dorsal is on the top of your foot, like the dorsal fin is on the top of a dolphin's back.
And plantar is on the bottom, like when you stomp your foot sometimes that is called planting your foot.


(from: wikipedia - plantar metatarsal veins)


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Plantar and Dorsal digital veins

So we know that the arteries bring the oxygenated blood from the heart all the way to the toes.
And the veins take the oxygenated blood from the toes and bring it back to the heart.

The arteries in the foot we learned about were the Plantar and Dorsal Digital Arteries

Just like you might guess, the veins are called Plantar and Dorsal Digital Veins.

(from: wikipedia - dorsal digital veins of the foot)


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Vein

After the deoxygenated blood goes into the venules they combine into larger veins.

The veins are the tubes that go through your body, bringing the used up blood back to the heart to be refreshed with new oxygen.


(from: wikipedia - vein)


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Venules

After the microcirculation happens at the capillaries, the deoxygenated blood that is all used up goes into small tubes called venules.

The many tiny tubes from the capillaries get combined into fewer bigger tubes called venules where the used up deoxygenated blood goes.

(from: wikipedia - venule)


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Microcirculation

We've learned how the oxygenated blood makes its way through the arteries, and how the last part of the trip before bringing blood to a part of the body is the arterioles.

After the arterioles, the blood goes into tiny small tubes called capillaries.
We learned about capillaries before, and how oxygen gets into capillaries at the blood air barrier by the lungs.

Capillaries are built to let blood out of them, to go to your tissues like your skin and muscles.
You can almost think of it like pouring water over a blanket. The blanket looks solid but if you pour water on it, the water will go through.

After the fresh oxygenated blood goes out from the capillaries into your body, your body uses up the oxygen in the blood, and the capillaries suck it back in to get sent back for more oxygen.

This used blood is called deoxygenated blood.

The whole process of the body dumping out the new blood and picking up the old blood is called microcirculation.

(from: wikipedia - microcirculation)


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Arterioles

We've learned about how oxygenated blood goes all the way from your heart to your head fingers and toes in the arteries of the body.

At the very end of the trip, the arteries that are carrying the oxygenated blood split apart into smaller tubes called arterioles to bring blood to every part of your body.

(from: wikipedia - arteriole)


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Plantar and Dorsal Digital Arteries

After the metatarsal arteries of the foot, the last arteries are the digital arteries.

There are two sets, the plantar digital arteries on the bottom of the foot, and the dorsal digital arteries on the top of the foot.

(from: wikipedia - common plantar digital arteries)


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Metatarsal Arteries

We learned that the arteries on the tarsus ankle area of the foot are called the tarsal arteries

After the tarsal arteries, the oxygenated blood goes to the metatarsal arteries.
The long bones of your foot between your toes and ankle are called your metatarsal bones.

You have two sets of metatarsal arteries, the plantar metatarsal arteries on the bottom of your foot, and the dorsal metatarsal arteries on the top of your foot.



(from: wikipedia - plantar metatarsal arteries)


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Tarsal Arteries

We just learned about the Dorsalis Pedis Artery.

Remember that the large bones in your foot and ankle are called your tarsus.

The two main arteries that supply blood to that part of your foot are the medial tarsal artery and the lateral tarsal artery.

They are on either side of your foot by the ankle.
The medial one is on same side as your big toe is on, and the lateral one is the same side as your pinky toe.

(from: wikipedia - medial tarsal arteries)


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