GENERAL HISTOLOGY

Detailed explanation-1: -The skeleton is the framework of bones and cartilage that supports and protects the soft tissues and the internal organs of the body.

Detailed explanation-2: -Many vertebrates with endoskeletons-humans included-also have cartilage, which gives noses and ears their shape, for instance. Early in development, most mammal fetuses have cartilaginous skeletons, which slowly ossify into bone.

Detailed explanation-3: -The skeletal system works as a support structure for your body. It gives the body its shape, allows movement, makes blood cells, provides protection for organs and stores minerals. The skeletal system is also called the musculoskeletal system.

Detailed explanation-4: -Chondrichthyes. Chondrichthyes is a class that contains sharks, skates, rays and chimeras. They are jawed vertebrates, with skeletons made of cartilage instead of bone. The class can be divided into two subclasses; Elasmobranchii (sharks, rays, skates, and sawfish) and Holocephali (chimaeras).

Detailed explanation-5: -An endoskeleton is a skeleton that is on the inside of a body, like humans, dogs, or some fish. The endoskeleton develops within the skin or in the deeper body tissues. The vertebrate endoskeleton is basically made up of two types of tissues (bone and cartilage).