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What are 3 facts about bones?
Fun Facts About Bones The adult human body has 206 of them. There are 26 bones in the human foot. The human hand, including the wrist, contains 54 bones. The femur, or thighbone, is the longest and strongest bone of the human skeleton.
What is there inside a bone?
(bone MAYR-oh) The soft, spongy tissue that has many blood vessels and is found in the center of most bones. There are two types of bone marrow: red and yellow. Red bone marrow contains blood stem cells that can become red blood cells, white blood cells, or platelets.
What is bone made of?
Made mostly of collagen, bone is living, growing tissue. Collagen is a protein that provides a soft framework, and calcium phosphate is a mineral that adds strength and hardens the framework. This combination of collagen and calcium makes bone strong and flexible enough to withstand stress.
Are human rib bones hollow?
The human thorax or thoracic cavity is the second largest hollow in the body enclosed by twelve pairs of bones called ribs, and joined together in the front by another bony structure called a sternum (breast bone).
What helps you stand up tall and protects the nerves in your spinal column?
Your skull helps protect you from injuries to your head. Your spine, or backbone, lets you stand up tall. Your spine also protects the spinal column with all of its nerves inside. Your ribs make a cage to protect your vital organs like the heart, lungs, and liver.
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