Module 1: Integumentary System

Question 1

Identify and describe the basic structure of skin

Answer 1

intact skin, including the ability of the skin to serve as a barrier to environmental threats such as bacteria, pressure, shear, friction and moisture

Question 3

Function of the integumentary system

Answer 3

1. protection/immunity
   -protects against pathogens, decreases water loss
2. temperature regulation
   -provides insulation
   -related to dilation and constriction of blood vessels within the layers of the skin
   -allows for sweating
3. sensation
   -contains various nerve endings, including for pain, light touch
4. assists in vitamin D synthesis and indicator of vitamin B levels

Question 4

What are the 3 layers of skin

Answer 4

1. epidermis- outermost
2. dermis- middle
3. hypodermis- innermost

Question 5

What are the 3 primary functions of the dermis

Answer 5

1. thermoregulation
2. storage of water/maintaining hydration
3. provides nutrients and waste removal for itself and the epidermis

Question 6

What else does the dermis contain

Answer 6

blood vessels
lymphatic vessels
glands
nerve endings
hair follicles
collagen

Question 7

What are the functions of the hypodermis

Answer 7

subcutaneous tissue
attaches skin to underlying bone and muscle
contains loose connective tissue, adipose tissue and elastin
contains 50% of body fat
provides insulation and shock absorption

Question 8

Risk factors that affect wound healing

Answer 8

comorbities- cardiovascular, diabetes, spinal cord injury
nutrition
obesity
smoking, alcohol/drug use
sedentary or limited mobility
impaired sensation
risk prone behavior- high risk activities, exposure