What is the internal skeleton of vertebrate animals? What functions does it perform? What departments does the human skeleton consist of

The internal skeleton consists of connective tissue – bone, cartilage and fibrous.
The human skeleton consists of the Skull, the belt of the upper extremities, the spine, the bones of the lower extremities, the bones of the pelvis and the bones of the lower extremities.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.