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This animation demonstrates how muscles and vertebrae move the head.
head, nodding, sternocleidomastoid muscle, atlas, rotating, skull, spine, muscle, vertebra, moving, human, biology
The two main parts of the central nervous system, the brain and the spinal cord are protected by the skull and the spinal column.
Human bones are joined together by cartilaginous or synovial joints, sutures or they can fuse together.
Synovial joints can be categorised by the direction of movement they allow.
Bones of the lower limbs are connected to the trunk by the pelvis.
Bones of the upper limbs form the pectoral girdle and the arms.
Our body´s internal support structure to which skeletal muscles are attached.
The knee joint is made up by the femur, the tibia and the kneecap.
The ribs, the sternum and the spinal column form the skeleton of the chest.
The arms are moved by flexor and extensor muscles.