How is The skeleton held together?
ligaments and muscles
Crayfish have an exoskeleton, meaning that their support structure is found on the outside of their body. The skeleton is composed of one large body covering that is scleritized (hardened) in some places and left unslceritized (flexible) in others to allow for movement at joints. Humans have an endoskeleton, meaning that their support structure is found internally. The skeleton is made of hard bones that are held together at the joints by ligaments and muscles.
Atoms are held together by a few forces, depending on how small you look. Quarks (the sub-atomic particles that make up protons and neutrons) are held together by gluons. Protons and neutrons are held together by the strong nuclear force. The nucleus and electrons are held together by the electromagnetic force.
Skeletons: All animals, including humans have skeletons. Humans have an internal skeleton. This means that our bones is on the inside of us. When an animal has an external skeleton it means that their skeleton is on the outside. These animals who have an external skeleton have what we commonly call shells. These shells are their skeleton which keeps their insides together. If you think of one of those big crabs and how there is…
Different types of joints are held together by different tissues types: Sutures and gomphoses are held together by dense fibrous connective tissue. Synchondroses are held together by hyaline cartilage. Symphyses are held together by fibrocartilage. Diarthroses or synovial joints, the most common type of joints, are held together by ligaments and joint capsules, which are made of dense fibrous connective tissue.
The axial skeleton consists of the 80 bones in the head and trunk of the human body. It is composed of five parts; the human skull, the ossicles of the inner ear, the hyoid bone of the throat, the rib cage, and the vertebral column. The axial skeleton and the appendicular skeleton together form the complete skeleton.