wunder beta🦴 Bones & Skeleton
Meet the 206 bones that hold you up and keep you moving!
What you’ll learn
- Explain what the skeleton does and that bones are living, blood-making tissue.The skeleton is the body's frame, giving shape and support. Adults have 206 bones while babies have about 300 that fuse over time. Bones are alive, and marrow inside them makes new blood cells.
- Identify the spine, skull, and joints and describe how bones let the body move.The spine's 33 vertebrae support the body and protect the spinal cord, while the skull protects the brain. The smallest bone is in the ear and the largest is the femur. Joints where bones meet allow the body to bend and move.
Questions this course answers
How many bones does an adult human body have?
Adults have 206 bones. Babies start with about 300, and some fuse together as they grow.
Why do babies have more bones than adults?
Babies have about 300 bones, and many fuse into larger bones as they grow, leaving 206.
What does bone marrow do?
Bone marrow inside bones makes billions of new blood cells every day.
Which body part does the skull protect?
The skull is a bony helmet that protects the brain and gives the face its shape.
Where is the smallest bone in your body?
The stirrup, or stapes, is in your ear and is only about 3 millimeters long.
What are joints?
Joints are where bones meet, like knees and elbows, and they let your body bend and move.
Grounded in trusted sources
- Nemours KidsHealth, "Your Bones (for Kids)", https://kidshealth.org/en/kids/bones.html
- Cleveland Clinic, "Bones", https://my.clevelandclinic.org/health/body/25176-bones
- UC Davis, "Bone Basics: How Many Bones Are in the Human Body?", https://www.ucdavis.edu/research/labs-to-lives/blog/childrens-community-health/bone-basics
- Healthline, "How Many Bones Does a Baby Have?", https://www.healthline.com/health/how-many-bones-does-a-baby-have
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