Intact skin barrier towards infection

Jamie is a 53-year-old male, who is 175cm tall, weighs 100kg, and has a waist circumference of 98cm. He lives in Queensland, and travels to work each day to the office where he works
as a regional manager within a manufacturing organisation.

1. As a keen gardener, Jamie is constantly suffering scratches, cuts and grazes when working. One day when he comes inside and gets changed, he finds a significant cut on his right arm. With appropriate consideration of Jamie’s case:
i. Discuss how Jamie’s normally intact skin acts a barrier towards infection, detailing specific anatomy and physiology of the integumentary system.
ii. Outline the key steps involved in the healing of his wound.