Anatomy and physiology

1.- Please name the components of the Integumentary System.Why the sebaceous glands are important?

2.-Please name the following body parts, in medical words: forehead, thighs, anterior part of the knee, neck.

3.- Please name and explain the body posterior cavities. Is the mediastinum a cavity?

4.- What is the difference between proximal and distal? Please give an example.

5.- What is the function of keratin in the different Integumentary system organs?.