Showing posts with label Integumentary System. Show all posts
Showing posts with label Integumentary System. Show all posts

Tuesday, July 4, 2017

Nail Plate


We just learned about the nail matrix.

Another part of the nail is the nail plate.

This is the big flat part of your nail.
When new cells are being made in the matrix, they are pushed forward to the plate, where they eventually end up at the tip of your fingernail.

(from: wikipedia - nail (anatomy))


Kid Facts - Blast from the past: Diancephalon

Tuesday, June 27, 2017

Nail - Matrix


Let's learn a little more about nails.

One part of the nail is the matrix.
This is the skin underneath the very bottom part of the nail, below where the nail meets the skin.

The matrix has nerves and blood vessels, and it is the part that makes new cells that turn into the nails.


(from: wikipedia - nail (anatomy))


Kid Facts - Blast from the past: Hindbrain

Tuesday, June 20, 2017

Nails


We just learned about sweat glands.

Another part of the integumentary system is the nails.

Even though nails feel hard like bones, they are actually made of something called keratin.
It's the same thing that hair is made out of too.
There are lots of parts of nails, like the plate, lunula, root, sinus, matrix, bed, hyponychium, and margin.

(from: wikipedia - nail (anatomy))


Kid Facts - Blast from the past: Medulla Oblongata

Tuesday, June 13, 2017

Sweat glands


We just learned about the Hair - Sebaceous Gland.

Another part of the integumentary system is the sweat gland.

Sweat glands are used to help cool your body down, and for your body to get rid of some waste like salt.

There are two types of sweat glands, the eccrine and apocrine.
The eccrine glands are the ones that are all over your body, and let out the watery sweat when you are hot and sweating.
The apocrine glands are only in a few places, like your armpits.
These apocrine glands also let out some smelly oils, which is part of what makes your body smell if you don't shower.


(from: wikipedia - eccrine sweat gland)


Kid Facts - Blast from the past: Pons

Tuesday, June 6, 2017

Hair sebaceous gland


We just learned about the Hair - Muscle.

Another part of the hair is the sebaceous gland.

The sebaceous gland for the hair is what makes your hair get greasy and oily after a while.
This might seem like a bad thing because you have to shower to get the oils off, but without the oil in your hair it would dry up, crack to pieces and fall off of your head.


(from: wikipedia - sebaceous gland)


Kid Facts - Blast from the past: Cerebellum

Tuesday, May 30, 2017

Hair - Muscle


We just learned about the Hair - Root Sheath.

Another interesting part of human hair is the Hair Muscle.
The fancy name for this muscle is the Arrector pili.

This muscle gets used when your skin gets cold and you get goosebumps on your skin as the hair is shoved out a little.


(from: wikipedia - arrector pili muscle)


Kid Facts - Blast from the past: Subthalamus

Tuesday, May 23, 2017

Hair - Root Sheath


We just learned about the Hair - Plexus.

Another part of the hair is the Root Sheath.

Just like the skin has layers, the hair also has layers.
A sheath is like a wrapper, and the hair has a soft inner sheath and a harder outer sheath.


(from: wikipedia - rooth sheath)


Kid Facts - Blast from the past: Epithalamus

Tuesday, May 16, 2017

Hair - Plexus


We just learned about the Hair Growth.

Another part of the human hair is the Plexus.

These are very small nerves that are wrapped around the bottom of the hair follicle, that sense when the hair is moved.
They are very sensitive, which is how your body can feel a light breeze through the hair on your skin.


(from: wikipedia - hair plexus)


Kid Facts - Blast from the past: Hypothalamus

Tuesday, May 9, 2017

Hair Growth


We just learned about the Hair Follicle.

Human hair doesn't always grow at the same speed.
Sometimes it is growing a lot, sometimes it is slowing down, and sometimes it stops growing.

We know that the hair on our head grows longer than the hair on our eyebrows or eyelashes.
Each part of the body has different rules for how long the hair should grow, and when it should stop.

The time for growing of hair is called the anagen phase.
catagen is when the hair growth is slowing down.
telogen is when the hair has stopped growing because it is long enough.

The hair for your eyebrows grows for about 4 months and then stops, but the hair on a human head will keep growing at a normal speed for about 2-7 years!
Human hair usually grows about 6 inches every year, so after 7 years your hair would be four and a half feet long!


(from: wikipedia - human hair growth)


Kid Facts - Blast from the past: Thalamus

Tuesday, May 2, 2017

Hair - Follicle


We just learned a little about human Hair.

One part of the hair is the hair follicle.

This is the part of the human skin that makes the hair that then grows up out of the skin.


(from: wikipedia - hair follicle)


Kid Facts - Blast from the past: Occipital Lobe

Tuesday, April 25, 2017

Hair


We just learned about the Adnexa, things that stick out of your skin.

Part of the Adnexa is Hair.

Even though hair just looks like small strings to us, there are a lot of parts to hair like the root, the follicle, shaft, cuticle, cortex and medulla.
Hair can be curly or straight, and can be many colors like brown, black, blond, red or even white.

It grows on every part of the skin except places like the palms, bottoms of the feet, and lips.



(from: wikipedia - hair)


Kid Facts - Blast from the past: Temporal Lobe

Tuesday, April 18, 2017

Adnexa


We just learned about the Hypodermis.

Another part of the integumentary system is the Adnexa, also called the Skin appendages.

These are the things that come out from your skin, but aren't skin themselves.
Like hair, nails, or where your sweat comes from called sweat glands.


(from: wikipedia - hair)


Kid Facts - Blast from the past: Parietal Lobe

Tuesday, April 11, 2017

Hypodermis


We just learned about the Dermis.

Another part of the skin is the Hypodermis, also called the Subcutaneous tissue.
This is the skin below the Dermis, which is below the Epidermis.

The body mostly has fat cells in the hypodermis, but it also has white blood cells and blood vessels.
There is also something called deep fascia or connective tissue that connects your muscles to your skin.

(from: wikipedia - subcutaneous tissue)


Kid Facts - Blast from the past: Frontal Lobe

Tuesday, April 4, 2017

Dermis


We just learned about the Epidermis.

Another part of the skin or integumentary system is the Dermis, also known as the Corium.

The Dermis is right below the Epidermis, and it helps give padding to the body underneath the skin.
It also is where the hair starts in things called follicles, and has many things called glands that do things like create sweat or other things your body makes.
The blood vessels we learned about in the circulatory system are also in the dermis.


(from: wikipedia - dermis)


Kid Facts - Blast from the past: Cerebrum

Tuesday, March 28, 2017

Epidermis


We just learned about the Skin.

Skin is made up of a lot of layers. The top part on the outside is called the Epidermis.
This is the dry part of the skin that helps protect things from getting inside of your body.


(from: wikipedia - epidermis)


Kid Facts - Blast from the past: Brain

Tuesday, March 21, 2017

Skin


Let's keep learning about the Integumentary System.

The largest part of this system is the skin.

It is the largest organ in the human body, and it makes up about 15 percent of a person's body weight.
That means if a person weighs 100 pounds, their skin weighs 15 pounds!

Human skin has a few layers that help protect the inside of the body from things getting in, and it can heal when it is cut.

(from: wikipedia - epidermis)


Kid Facts - Blast from the past: Peripheral Nervous System

Tuesday, March 14, 2017

Integumentary System


We've learned a lot about the Nervous System.

Another part of the body is the Integumentary System.

This is the part of the body that is your skin, hair and nails.


(from: wikipedia - integumentary system)


Kid Facts - Blast from the past: Central Nervous System