The UV rays of the sun reach the skin in two different forms, which are:

Implements requiring disinfection should be placed in a covered container large enough for implements to be:

To press fabric wraps onto the natural nail plate and avoid the transfer of dust or oil, use:

Containers that create the perfect environment for pathogens to grow and reproduce are:

The melanin that provides brown or black color to hair is:  

Small pieces of fabric used to strengthen a weak point in the nail or repair a crack are:

Cotton used on the end of a wooden pusher should be changed:

The structure in the lungs is known as the respiratory membrane, where gases are exchanged – oxygen leaves the lungs and enters the blood and carbon dioxide leave the blood and enters the lungs. The respiratory membrane is composed of two extremely thin layers of simple squamous epithelium. Explain how the structure of the respiratory membrane follows its function. (**Rule of anatomy: form follows function **)           .

The cavities between bones are called __________ cavities.

Nonkeratinized stratified squamous epithelia would be found