The skeleton has six main functions:

Provide shape and support

The skeleton provides the framework which supports the body, and maintains its shape. The joints between bones permit movement.

Attachment

The bones of the skeleton provide an attachment surface for muscles and tendons which together enable movement of the body. Ligaments often connect bones across a joint to provide stability. Microscopic fibres called Sharpie’s fibres connect teeth to the bone of their sockets.

Movement

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.

Protection

The skeleton protects many vital organs: The skull protects the brain, the eyes, and the ears, the spine protects the spinal cord, the ribs, spine, and sternum protect the lungs and the heart, the clavicle and scapula protect the shoulder, the ilium and spine protect the digestive and urogenital systems and the hip, the patella and the ulna protect the elbow and the knee, and the carpals and tarsals protect the wrist and ankle.

Blood cell production

The skeleton is the site of haematopoiesis – the generation of blood cells, which takes place in red bone marrow.

Storage

Bone also serves as a mineral storage deposit in which nutrients can be stored and retrieved. Calcium, especially, can be released by dissolution of bone tissue under the control of 1,25-dihydroxyvitamin D3 (a form of vitamin D) during periods of low calcium intake.

Gives body structure. Makes our type of motion possible. Creates red blood cells (the large leg bones). Protects organs.

The endoskeleton (internal skeleton), a framework of living material enclosed within the body, permits larger size coupled with freedom of movement and is characteristic of vertebrate animals.

Six bones make up the tiny bones of the middle ear (three in each ear) that function in hearing.

The spinal column is a bony column forming the main structural support of the skeleton of humans and other vertebrates, also known as the vertebral column or backbone. It houses and protects the spinal cord, and within it the spinal fluid circulates.

I performed an experiment with a hognose snake demonstrating their olfactory senses. They will usually only eat toads and reject mice, but by rubbing the toad on a mouse (the snake had previously rejected) he would strike it without hesitation. I guess this would fall into the investigation category though study of olfactory sensations in reptiles would apply more precisely. I was just explaining how snakes will ignore visual stimilus over olfactory sensation. Eventually you can diminish the amount of scent transfer and he will gradually accept mice without any scent. I will exercise caution in certainly washing your hands after handling the toad as the snake will strike you as well. They are also rear fanged and can cause nausea in some individuals whom are bitten, though they are great pets and long lived.

provide support for the body,

to protect delicate internal organs

to provide attachment sites for the organs

Providing moveability. stopping you from turning to jelly. alowing you to be flexible.