What is the Skeletal System?
Your skeletal system is all of the bones in your body and the tissues such as tendons, ligaments, and cartilage that connect them.
Your teeth are also considered part of your skeletal system but they are not counted as bones. Your teeth are made of enamel and dentin. Enamel is the strongest substance in your body.
How does the System help us?
The skeletal system supports and protects all of your muscles, skin, and vital organs. Without your skeleton your body would collapse into a heap. Your skeleton is strong but light. Without bones you'd be just a puddle of skin and guts on the ground. Your cranium (skull) protects your brain and eyes, the ribs protect your heart and lungs and your vertebrae (spine, backbones) protect your spinal cord.
What is a bone made of?
A typical bone has an outer layer of hard or compact bone, which is very strong, dense and tough. Inside this is a layer of spongy bone, which is like honeycomb, lighter and slightly flexible. In the middle of some bones is jelly-like bone marrow, where new cells are constantly being produced for the blood. The structural material in bone is calcium phosphate.
Bones are made of tissues that include marrow, endosteum, and periosteum, nerves, blood, vessels, and cartilage.
Bones are made of tissues that include marrow, endosteum, and periosteum, nerves, blood, vessels, and cartilage.
How do you keep your bones healthy?
Bones need exercise to stay as strong as possible. Walking, jogging, running are important in keeping your bones strong and healthy. Riding your bike, basketball, soccer, gymnastics, baseball, dancing, skateboarding and other activities are all good for your bones. In order to keep your body and bones safe you need to use proper equipment like a helmet, knee pads, shin guards, mats. You also need calcium to fortify your bones.
Does each bone have a name?
Common Name | Scientific Name
skull | cranium
jawbone | mandible
collarbone | clavicle
shoulder blade | scapula
breast bone | sternum
funny bone | humerus
spine | vertebrae
hips | pelvis
wrist | carpals
thigh bone | femur
kneecap | patella
shin bone | tibia
ankle | tarsals
skull | cranium
jawbone | mandible
collarbone | clavicle
shoulder blade | scapula
breast bone | sternum
funny bone | humerus
spine | vertebrae
hips | pelvis
wrist | carpals
thigh bone | femur
kneecap | patella
shin bone | tibia
ankle | tarsals
Fun Facts:
1. Baby's have 300 bones at birth. Adults end up with 206 bones.
2. Humans and giraffes have the same number of bones in their necks.
3. You have over 230 moveable and semi-moveable joints in your body.
4. Your longest bone in your body is the thigh bone, (the femur) -- it's about 1/4 of your height.
5. Your smallest bone in your body is the stirrup bone in the ear which can measure 1/10 of an inch.
6. Your hand has 27 bones and your face has 14.
2. Humans and giraffes have the same number of bones in their necks.
3. You have over 230 moveable and semi-moveable joints in your body.
4. Your longest bone in your body is the thigh bone, (the femur) -- it's about 1/4 of your height.
5. Your smallest bone in your body is the stirrup bone in the ear which can measure 1/10 of an inch.
6. Your hand has 27 bones and your face has 14.
Sources:
http://hes.ucfsd.org/gclaypo/skelweb/skel01.html
http://yucky.discovery.com/flash/body/pg000124.html
http://yucky.discovery.com/flash/body/pg000124.html
Sources (Pictures):
http://4.bp.blogspot.com/-yPJPMReFWjE/TZlOEIi0G8I/AAAAAAAAAOg/wn3bz7G8g9E/s1600/Skeletal+System+.gif
http://rickwilsondmd.typepad.com/.a/6a01156e42deab970c013489381d01970c-500wi
http://hes.ucfsd.org/gclaypo/skelweb/graphics/ribvercr.gif
http://hes.ucfsd.org/gclaypo/skelweb/graphics/bonemade.gif
http://files.coloribus.com/files/adsarchive/part_252/2526505/file/brand-rich-in-calcium-for-strong-bones-small-40430.jpg
http://hes.ucfsd.org/gclaypo/skelweb/graphics/skelid.jpg
http://rickwilsondmd.typepad.com/.a/6a01156e42deab970c013489381d01970c-500wi
http://hes.ucfsd.org/gclaypo/skelweb/graphics/ribvercr.gif
http://hes.ucfsd.org/gclaypo/skelweb/graphics/bonemade.gif
http://files.coloribus.com/files/adsarchive/part_252/2526505/file/brand-rich-in-calcium-for-strong-bones-small-40430.jpg
http://hes.ucfsd.org/gclaypo/skelweb/graphics/skelid.jpg