Bone Basics
How many bones are in the human body?
206
What do muscles help us do?
Move
What happens when a muscle pulls on a bone?
It makes the bone move.
What helps make your bones strong and hard?
Calcium.
True or False: Bones are stronger than steel.
True
What is the longest bone in the body?
The femur (thigh bone)
What muscle works non-stop without resting, even while you sleep?
The heart muscle.
What does the ribcage protect?
The heart and lungs.
What is the soft, spongy material inside bones called?
Bone marrow
True or False: Bones are alive.
True (they grow and heal)
What is the name of the bone that protects your brain?
The skull
True or False: Muscles can push and pull.
False (muscles can only pull).
What is cartilage?
A smooth, rubbery material that covers the ends of bones
What part of the bone produces red blood cells?
Bone marrow
How long does it take for a bone to heal after it breaks?
C) A few months – It usually takes a few months for bones to heal, depending on the break.
What part of the body has the smallest bones?
The ear.
How many muscles are there in the human body?
Over 600 muscles.
What bone helps you stand upright and supports your upper body?
The spine (vertebral column).
What are the two main materials bones are made of?
Collagen and calcium
True or False: You are born with all the muscles you’ll ever have.
True! (You are born with all your muscles, but they grow and become stronger as you age.)
What is the hardest bone in your body?
The jawbone (mandible).
What do skeletal muscles help us do?
Help us move by pulling on bones
What connects bones to other bones?
Ligaments
What is the flexible tissue at the end of bones called?
Cartilage
True or False: The fastest muscle in your body is in your eyes.
True – Your eye muscles are the fastest in your body, allowing you to blink in less than a second!
Which part of your body has the most bones?
Your hands and wrists
What is the name of the muscle that helps you breathe?
The diaphragm
What is synovial fluid?
A thick liquid that helps joints move smoothly
What is the function of tendons?
To connect muscles to bones
How many muscles do you use to smile?
B) 12
What are bones that make up your spine called?
Vertebrae
What is the job of the triceps when you straighten your arm?
Pulls your arm down
What is the name of the bone you hit when your elbow feels "funny"?
The humerus.
(It’s called the funny bone because of the sensation you feel when you hit it!)
What do bones store besides calcium?
Fat
True or False: Bones make up about half of your body weight.
False
(Bones make up about 15% and muscles can account for nearly 50% of your body weight)
What are the soft spots on a baby’s head called?
Fontanelles are soft areas on a baby's skull that allow the bones to move slightly during birth and help the skull grow as the baby’s brain develops.
True or False: Your muscles are always working, even when you're resting.
True – Your muscles are always active, even when you’re resting, to help you stay upright, breathe, and pump blood.
Which two bones work together in your lower arm?
The radius and ulna.
What disease can happen if you don't get enough vitamin D and calcium?
Rickets
The human body has more bones as a baby than when it grows up.
True – Babies have about 270 bones, but as they grow, some bones fuse together, and adults end up with 206 bones.