Please answer each question in detail and picture is required and references

I need high quality of work, remember this is a Histology paper so please make sure you include histology.

It has to be at least 4 pages long.

1 : Describe in detail the different histological layers of skin?

2 : Discuss the different types of cells and their role found in skin? What role does sebaceous and sweat glands play in skin? 

1. What is surfactant? Discuss its role in infant maturity?

2. Discuss the role of gaseous diffusion in alveolar sacs and its role in asthma and pneumonia?