What are the three main functions of the human skeleton?

Answer 1

Hmm, can't really remember, but should be:

1. Give our body our shape.
2. Protect our vital organs (e.g. ribcage protecting our heart and lungs)
3. To allow for movement?

Answer 2

Functions of the skeleton
1.Support
Without a skeleton we would be like jelly and flop all over the floor. In fact, one could argue that our skeleton is an important evolutionary trait that has helped our species progress. Our skeleton provides the body with shape and forms a frame under the skin. The body is held in position by muscles which are firmly attached to the bones.
2.Protection
Vital organs are protected from damage by the different bones of the skeleton. The brain is protected by the cranium, the heart and lungs are surrounded by the ribs and the sternum, and the spinal cord passes through the centre of the vertebral column.
3.Movement
If the skeleton did not have joints, it would be impossible to move. Bones are linked at the joints and muscles allow them to move. The way the bones grow affects the movement in the joints.
Transient joints or immovable joints have fused together (always after birth). An example of this is the "soft spot" on a baby's head. The skull has not grown together completely, but will fuse as the child grows up. Permanent joints are ones that stay moving throughout life, unless injured or diseased.
Gaps between the bones in a baby's skull give it room to grow before they fuse together.
4.Blood production
Blood cells are made in the red bone marrow in the centre of certain bones of the skeleton. The main sites of blood cell production are the pelvic girdle, ribs, sternum and the vertebrae.
Bones are not completely solid, as they would be too heavy to carry around. Blood vessels feed the centre of the bones, and calcium is stored and released to the tissues which require it. Also stored inside the bones are different types of bone marrow - red and yellow. Red bone marrow produces blood, while yellow bone marrow stores fat but can be converted to red if the body is in need of more red/white blood cells.
5.Store for minerals
The main mineral that is stored in the skeleton is calcium. The body needs calcium to harden the bones. This hardening process is called ossification and happens throughout childhood. The skeleton is also continually replacing itself throughout our adult life. Calcium is transported in the bloodstream to the sites of bone growth or where replacement is needed (at an injured bone).

Answer 3

The skeleton supports the body and protects the organs.Lungs are protected by the ribs, as well as the heart. The skull protects the brain. Bones help give leverage and store minerals. The 3rd function is the manufacture of blood cells.

Answer 4

The most obvious function of bone is to support the body. It also the site of haematopoiesis, the manufacture of blood cells, that takes place in bone marrow (which is why bone marrow cancer is very often a terminal disease). It is also necessary for protection of vital organs. Movement in vertebrates is dependent on the skeletal muscles, which are attached to the skeleton by tendons. Without the skeleton to give leverage, movement would be greatly restricted. Bone also serves as a mineral storage deposit in which nutrients can be stored and retrieved.

Answer 5

Support
Maintain shape
To allow movements.