Parietal Lobe

We just learned about the frontal lobe in the cerebrum part of the brain.

Another lobe in the cerebrum is called the parietal lobe.

This part of the brain is used for your skin and feelings, so when you touch something you can tell if it is soft or hard, smooth or sharp.

The parietal lobe is also used to help understand and speak languages.

And it is used to figure out where you are when you are moving around, which is called spatial awareness. An example of this is when you are in a house you can tell if you are in a smaller room versus a larger room, or if you go upstairs you can figure out which room you are above.


(from: wikipedia - parietal lobe)


Kid Facts - Blast from the past: Femoral Artery

Frontal Lobe

We just learned about the Cerebrum.

There are four parts of the cerebrum, called lobes.

The lobe in the front at your forehead is called the Frontal Lobe.

The frontal lobe helps control voluntary movement.
Voluntary movement means things that you control, like walking or moving your arms.
Involuntary movement is things you can't control, like your heart pumping, or your stomach digesting your food.

It also helps make decisions on what is good or bad, and helps make decisions on if two things are alike.


(from: wikipedia - frontal lobe)


Kid Facts - Blast from the past: Abdominal Aorta

Cerebrum

Let's keep learning about the brain.

The largest part of the brain is called the Cerebrum.

This is the big part of the human head, where all of your thinking and feeling happens.
The Cerebrum is what sends all the messages to your body and tells it what to do, and it's also the part that gets messages from the body about sights sounds and feelings.


(from: wikipedia - cerebrum)


Kid Facts - Blast from the past: Thoracic Aorta

Brain

We just learned that the Nervous System is made up of the Central Nervous System which is your brain and spinal cord, and the Peripheral Nervous System which is all the nerves going through your body.

Let's learn more about the brain.

The brain is the part of the body that is in control of everything.
It tells the body when to breathe, when to walk or jump, and when to smile.

It also gets sent all the messages from body.
When you stub your toe it sends a message to your brain telling you that it hurts.
When you see, smell, hear, taste or touch things, all of those messages go to your brain.

The brain also is what helps you think and learn.
From learning how to talk, spell, do math or even how to sing.
It's also where your memories are, where your brain keeps track of the things you've seen and heard.


(from: wikipedia - human brain)


Kid Facts - Blast from the past: Descending Aorta

Peripheral Nervous System

We just learned that the central nervous system is one part of the Nervous System.

The other main part is the Peripheral Nervous System.

This is all the long wires of nerves that go through your whole body.


(from: wikipedia - peripheral nervous system)


Kid Facts - Blast from the past: Palmar Digital Arteries

Central Nervous System

Let's keep learning about the Nervous System.

One of the main parts of the nervous system is the central nervous system.

This is made up of your brain and spinal cord.


(from: wikipedia - central nervous system)


Kid Facts - Blast from the past: Palmar Arch

Nervous System

We learned last time about the Heart Wall - Pericardium.

We've learned about the skeletal system (bones), the digestive system (eating & drinking), the respiratory system (breathing) and the circulatory system (blood & heart).

Let's learn about the Nervous System!

The nervous system is what controls your body and sends messages all over telling it what to do.

Your brain is part of your nervous system, and there are things called nerves that go all through your body that are almost like electric wires.

The brain sends out a message over these nerves to something like your hand, and your hand moves.
If you get hurt, the nerves send messages to the brain saying OUCH!

Everything from getting hungry to feeling tired to telling your legs when to jump is controlled by your nervous sytem.


(from: wikipedia - nervous system)


Kid Facts - Blast from the past: Radial & Ulnar Arteries

Heart Wall - Pericardium

We've learned that the heart wall's soft inner most layer is the endocardium, the second layer of muscle is the myocardium and the third protective layer is the epicardium

There is a protective bag outside the heart that is called the pericardium.
The pericardium has liquids in it, and it keeps the heart from getting shaken with every movement the body makes.


(from: wikipedia - pericardium)


Kid Facts - Blast from the past: Brachial Artery

Heart Wall - Epicardium

We just learned that the heart wall's soft inner most layer is the endocardium, and the second layer of muscle is the myocardium.

The next layer is called the epicardium.
This layer is a barrier to protect the heart.


(from: wikipedia - pericardium)


Kid Facts - Blast from the past: Axillary Artery

Heart Wall - Myocardium

We just learned about the first inside part of the heart wall called the endocardium.

The next part of heart wall is the Myocardium.

This part of the heart wall has the muscles in it that squeeze together to make the heart pump the blood through the body.


(from: wikipedia - cardiac muscle)


Kid Facts - Blast from the past: Dorsal Scapular Artery

Heart Wall - Endocardium

We just learned about the pulmonary valve in the heart that opens for blood to go to the lungs for oxygen.

The walls of the heart are made up of different types of layers.

The inside wall of the heart is called the endocardium.
This is a thin layer that keeps the inside of the heart soft, smooth and wet, and also helps the heart send it's electrical signals all over that are part of what keeps it beating at the right time.


(from: wikipedia - endocardium)


Kid Facts - Blast from the past: Internal Thoracic Artery

Pulmonary Valve

We've now learned about three of the four heart valves:
The tricuspid valve between the right atrium and ventricle,
the mitral valve between the left atrium and ventricle,
and the Aortic Valve between the left ventricle and aorta.

The fourth valve is the pulmonary valve, between the right ventricle and pulmonary artery.
When the right ventricle pushes the pulmonary valve open, the blood goes from the heart to the lungs for oxygen.


(from: wikipedia - pulmonary valve)

Kid Facts - Blast from the past: Vertebral Artery

Aortic Valve

We've learned about the tricuspid valve between the right atrium and ventricle, and the mitral valve between the left atrium and ventricle.

Another valve is called the aortic valve which is between the left ventricle and the aorta.

This valve opens for the heart to pump blood out to all the parts of the body, and then closes so the blood doesn't leak back into the heart.



(from: wikipedia - aortic valve)


Kid Facts - Blast from the past: Subclavian Artery

Mitral Valve

We just learned about the tricuspid valve between the right atrium and ventricle.

Another valve is called the mitral valve and it is between the left atrium and left ventricle.

It opens to let blood flow from the left atrium into the left ventricle, and then closes so the blood doesn't flow back into the left atrium.


(from: wikipedia - mitral valve)


Kid Facts - Blast from the past: External Carotid Artery

Tricuspid Valve

We just learned that there are heart valves that control the flow of blood in the chambers of the heart.

One of the valves is called the tricuspid valve, which is between the right atrium and right ventricle.

When blood comes in and fills up the right atrium, the tricuspid valve opens, letting all the blood flow into the right ventricle.
Then it closes to keep the blood from flowing back into the right atrium.


(from: wikipedia - tricuspid valve)


Kid Facts - Blast from the past: Internal Carotid Artery

Heart - Valves

We just learned about how the blood flows through the ventricles, atriums, veins and arteries.

In between each of these areas is something called a valve which opens and closes to let the blood out or keep it in.


(from: wikipedia - heart valve)


Kid Facts - Blast from the past: Common Carotid Artery

Heart - Blood Flow

We just learned about the Pulmonary Artery

We've now learned about all of the arteries and veins that pump blood all over the body.

The part of the body that does the pumping is the heart, which has 4 chambers that we've already learned about.

Deoxygenated blood comes into the Right Atrium and then goes to Right Ventricle.
The Right Ventricle pushes the blood to the lungs to get oxygen, then the oxygenated blood comes into the Left Atrium.
The blood then goes into the Left Ventricle which sends the blood to all parts of the body, and it comes back to the Right Atrium where we started.

So it goes Right Atrium, Right Ventricle, Lungs, Left Atrium, Left Ventricle, Body, Right Atrium.

(from: wikipedia - heart)


Kid Facts - Blast from the past: Aortic Arch

Pulmonary Artery

We just learned about the right ventricle pumps deoxygenated blood out of the heart to get filled up with oxygen at the lungs.

The deoxygenated blood leaves the heart through the pulmonary artery and goes to the lungs in capillaries.

It might seem strange that even though it is carrying deoxygenated blood it is called an artery instead of a vein.

The reason it is called an artery is because it is bringing blood away from the heart, and veins all pump toward the heart. So after the blood gets filled with oxygen, it brings oxygenated blood back to the heart in the pulmonary vein



(from: wikipedia - pulmonary artery)


Kid Facts - Blast from the past: Ascending Aorta

Right Ventricle

We just learned that the right atrium fills up with deoxygenated blood from the body.

After that the blood goes into the right ventricle which pumps the blood out of the heart and over to the lungs to get filled up with oxygen.


(from: wikipedia - ventricle (heart))


Kid Facts - Blast from the past: Aorta

Right Atrium

We just learned about the jugular vein that brings deoxygenated blood from the head and neck down toward the heart.

All of the arteries in the push blood away from the heart, and all of the veins bring blood back toward the heart.

We learned about the superior and inferior vena cava that brings blood back into the heart.
That goes right into the right atrium a chamber in the heart that fills up with deoxygenated blood.


(from: wikipedia - atrium (heart))


Kid Facts - Blast from the past: Left Ventricle