When birds lay eggs, they create the eggshell from the calcium in their own bones.
True.
False.
Sharks are constantly losing teeth. Unlike humans with permanent teeth, sharks have rows of replacement teeth that move forward as the front teeth wear down or fall out.
False.
True.
An adult elephant has 364 bones.
False.
True.
Not all animals have a spinal cord.
False.
True.
Older adults should avoid exercise to protect their bones.
False.
True.
Once a bone is broken, it will never be as strong as it was before.
True.
False.
You can only break a bone if you fall from a great height.
True.
False.
Children should drink cow's milk to strengthen their bones.
False.
True.
Cracking your knuckles will give you arthritis.
False.
True.
Our bones can store minerals, such as calcium and phosphorus, and release them back into the bloodstream when needed.
False.
True.
There are many things we can do to keep our bones healthy, such as eating a diet rich in calcium and vitamin D, exercising regularly, and avoiding smoking.
False.
True.
Bones can be broken by a fall, a blow, or other trauma.
False.
True.
The bone marrow is the soft tissue found inside some bones.It is responsible for producing red blood cells, white blood cells, and platelets.
False.
True.
The skeletal system works with the muscular system to allow us to move.
True.
False.
The skeletal system also includes cartilage, which is a flexible tissue that cushions bones at joints and provides support in structures like the nose and ears.
False.
True.
Bones contain calcium, phosphorus, and other minerals that make them strong and hard.
True.
False.
