初級 美國腔 166 分類 收藏
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Happy Halloween my friends!
I know it's not Halloween today.
But, can you guess what I am going to talk about?
Yes that's right! Bones!
Zoom In.
Hey, don't be scared... That's not a ghost.
That's just how your skeletal system looks like!
Come let's talk a little more about the bones in your body.
Let's start from your head.
Cranium.
This is the Cranium.
It protects the brain from bumps and knocks.
Mandible.
The lower part of the skull is called the Mandible.
It is the largest and the strongest bone of your face.
Scapula.
It is a triangular-shaped bone that is protected by surrounding muscles.
It is commonly called the Shoulder Blade.
Rib Cage.
The rib cage protects your heart and lungs.
It is actually very delicate..
..and can be damaged by accidents, sports or even a powerful sneeze.
The arm consists of three large bones.
The humerus bone forms the upper arm.
The radius and ulna are the two bones which form the lower arm.
You have one radius and one ulna in each arm.
The radius and ulna bones connect between the elbow joint and the wrist.
Your palm consists of three groups of bones.
Carpals, Metacarpals and Phalanges.
Femur.
The Femur, or thigh bone..
..is the longest, heaviest, and strongest bone in the entire human body.
All of the body's weight is supported by the femurs during many activities, such as..
..running, jumping, walking, and standing.
Patella.
The Patella is also known as the kneecap.
It is a thick, circular-triangular bone..
..which covers and protects the surface of the Knee Joint.
Fibula.
The Fibula is the outer and thinner bone of the lower leg.
Its main function is to provide attachment for muscles.
However, it doesn't give much support and strength to the leg.
Tibia.
The Tibia is a large bone located in the lower leg of the human body.
It is also known as the shin bone.
And is the strongest weight bearing bone.
Just like you palm, your foot also consists of 2 groups of bones.
Tarsals and Metatarsals.
Did you know that half of your body's bones are in hands and feet?
And... An infant has 300 bones whereas an adult has 206 bones.
This is because some smaller bones fuse together to form bigger bones.
Okay kids, gotta go now.
This is me. Zooming out.
Tune in next time for more fun facts.
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骨頭 (Bones)

166 分類 收藏
Amy.Lin 發佈於 2019 年 3 月 18 日    陳美瑩 翻譯    Evangeline 審核
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