The Basics
This is the total number of bones found in a fully developed adult human skeleton.
What is 206?
This is the primary function of the skeletal system, which helps you stand upright rather than being a puddle on the floor.
What is support?
This part of the skeleton contains 80 bones along the center of the body, including the skull and rib cage.
What is the axial skeleton?
This dense, heavy outer layer makes up the exterior of the bone.
What is compact bone?
This condition, common in the elderly, involves the loss of bone tissue, making bones brittle.
What is osteoporosis?
These are the two primary "organs" that make up the entire skeletal system.
What are bones and joints?
Besides minerals like Phosphorus, bones are responsible for storing this vital mineral which is often found in dairy products.
What is calcium?
This part of the skeleton contains 126 bones and is primarily responsible for aiding with movement.
What is the appendicular skeleton?
This type of bone is found on the inside; it is lighter and porous, looking much like a kitchen tool used for cleaning.
What is spongy bone?
This inflammatory disease doesn't just hurt the bones; it specifically damages the joints and surrounding tissue.
What is arthritis?
This soft connective tissue found inside the pores of spongy bone is responsible for producing blood cells.
What is bone marrow?
This process occurs inside the red bone marrow of larger bones, creating the cells that carry oxygen through your body.
What is blood cell production?
These two "girdles" are the parts of the appendicular skeleton that connect your limbs to the center of your body.
What are the pelvic and shoulder girdles?
This tough, fibrous membrane covers and protects the very outer surface of the bone.
What is the periosteum?
Often appearing in teenagers, this condition is characterized by a side-to-side curve in the spine.
What is scoliosis?
The skeletal system works in conjunction with this other system to allow the body to move.
What is the muscular system?
Bones help maintain this stable internal environment by absorbing or releasing calcium into the blood.
What is homeostasis?
The skull, vertebrae, and this bone structure make up the three main parts of the axial skeleton.
What is the rib cage?
These specific connective tissues attach bone to bone.
What are ligaments?
This disease causes the softening of bones and is usually caused by a lack of Vitamin D.
What is osteomalacia?
Humans have five classifications of bones: Long, Short, Irregular, Flat, and this final type, which includes the patella (kneecap).
What are sesamoid bones?
The skeletal system acts as an "anchor" for these, which pull on bones to allow the body to move.
What are skeletal muscles?
While the adult human skeleton has 206 bones total, this specific number of bones is found in the axial portion.
What is 80?
These connective tissues attach muscle to bone, allowing the skeleton to move when muscles contract.
What are tendons?
It takes between 25 and this many pounds of pressure to cause a break or fracture in an average bone.
What is 160 pounds?