Let’s learn some bone and skeleton facts in this blog topic by CRB Tech Reviews. The human skeleton has 6 main functions and our skeleton can be split into 2 main parts.
DO you know how many bones are there in a human skeleton? What is the largest bone? Why bone marrow so important? To know more, keep reading.
- At birth the human skeleton has 300 bones. By adulthood, some bones get fused together to end up with 206 bones.
- Human bones grow continuously from birth till mid 20’s. Our skeleton’s bone mass is at its maximum density at the age of 30.
- If broken the bones will re-grow and repair them. Often physicians will place a cast on splint to make sure the bones repair straight and right.
- The axial skeleton part has 80 bones. It includes the vertebral column, the rib cage and the skull and helps us maintain our upright posture, by spreading the weight in the head, and upper areas down to the lower areas near the hips.
- The appendicular skeletal has 126 bones. It includes the pectoral girdles, the pelvic girdle and the bones of the lower and upper limbs. Its function is for movement of the body and to protect some organs.
- The human skeletal has 6 major functions which include blood cells production, support and movement, protection, storage of ions and regulation of endocrine system.
- The longest bone in the human body is the thigh bone also known as the femur.
- The smallest bone is located in the middle ear. The staples bone is only 2.8 millimetres long.
- Like our skin, the human bones are also constantly worn down and re-made, and every 7 years we have a new bone.
- The area of our body with most bones is hands, fingers and wrist where there are 54 bones.
- Our teeth form the part of the skeletal system, but are not counted as bones.
- There are a few differences between human male and female skeletons. The female skeleton is slightly smaller and the pelvis bones differ in shape, size and angle in necessity for child birth.
- The majority of bones have a dense, strong outer layer, followed by a spongy part full of air, while the middle contains a soft, flexible, tissue called bone marrow.
- Bone marrow makes up to 4% of a human body mass. It produces red blood cells which carry oxygen in the body. It also produces lymphocytes that support body’s immune system.
- Calcium is important for our bones and keeps them strong and healthy.
- The areas where bones meet are called joints. The joints in our skull have no movement while our hip joints allow for a wide range of movement.
- At places, bones are held at joints by muscles and tissues called ligaments. Another tissue called cartilage covers the bone joint surface area to prevent the bones from friction.
- The medical branch for learning the human skeletal system is called Orthopaedics.
- There are a number of skeletal disorders, like osteoporosis which leads to chances of fractures, scoliosis is curvature of the spine, and arthritis is an inflammatory disease that damages joints.
We conclude now.
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