Which layer of the epidermis protects from abrasion and is found only in thick skin?

The nail is actually a modification of the skin and corresponds to the hooves of animals.

Which type of muscle tissue is found in the walls of hollow internal organs?

During endochondral ossification

Osteoblasts are the cells that secrete the organic matrix of bone.

melanin

An abnormal lateral curvature of the spine is called

The fibrovascular membrane that covers a bone is called the ____.

A condition usually beginning with the facial muscles and characterized by the easy tiring of muscles or muscle weakness is known as ____.

The immunity of the body can function without help from the skeletal system.