6.1 d Functions of the Integument
What is keratin?
It is the tough protein in the epidermis that helps protect the body from injury and prevents water loss.
What is the Integumentary System?
It is the body's largest organ system. It includes the skin and its associated structures and protects the body while helping maintain homeostasis.
What is the dermis?
The skin layer lies directly beneath the epidermis.
What is the hypodermis?
This layer is also known as the subcutaneous layer.
What is a first-degree burn?
This degree of burn affects only the epidermis.
What is the epidermis?
The layer of skin acts as the body's first line of defense against bacteria and physical damage.
What is stratified squamous epithelium?
The epidermis is made up of this type of tissue.
What is connective tissue?
The dermis is composed primarily of this type of tissue.
What is adipose tissue?
The hypodermis is made mostly of this tissue that stores energy.
What is a second- degree burn?
This degree of burn affects the epidermis and part of the dermis.
What is Vitamin D?
This vitamin is produced in the skin when it is exposed to sunlight.
What are melanocytes?
These cells produce melanin to protect the skin from UV radiation.
What are the papillary layer and reticular layer?
These two layers make up the dermis.
What is the hair shaft?
This part of the hair is visible above the skin.
What is a third- degree burn?
This degree of burn destroys the epidermis and dermis.
What is Langerhans (dendritic) cells?
These specialized skin cells help detect and fight invading pathogens.
What are blood vessels?
The epidermis is described as avascular meaning it lacks these structures
What are strength and elasticity?
Collagen and elastin in the dermis provide these properties.
What is the hair bulb?
Active hair growth occurs in this region.
What is stratum basale?
Cell division in the epidermal layers helps repair skin.
What is vasodilation?
When blood vessels widen to release heat, this process is occurring.
What is the stratum lucidum?
The epidermal layer is found only in thick skin like the palms and soles.
What are sensory receptors (or nerves)?
These structures found in the dermis help detect touch, pain, and pressure.
What is the hair papilla?
This structure supplies nutrients to growing hair cells.
What are fibroblasts?
These cells produce collagen during repair.