Integument A&P

What is the primary function of the skin in the integumentary system?

Protection from pathogens, physical damage, and UV rays.

What is melanin?

A brown pigment in skin cells that protects against UV rays.

What is one way the skin prevents dehydration?

It holds moisture in the body, preventing fluid from seeping out.

How does skin help maintain body temperature?

Through perspiration and the dilation of capillaries to increase blood flow.

What is hyperesthesia?

An increase in sensation, often due to burns.

What are the three main layers of the skin?

Epidermis, dermis, and hypodermis.

What is the epidermis?

The top layer of the skin that contains melanocytes.

What does the dermis contain?

Blood vessels, nerves, glands, and hair.

What is the nickname for the dermis?

True skin.

What happens to capillaries during temperature regulation?

They dilate to increase blood flow and cause reddening of the skin.

What are sebaceous glands?

Glands that produce oil to keep the skin moisturized.

What is the function of the erector pili muscle?

Causes hairs to stand up, resulting in goosebumps.

What are sudoriferous glands?

Sweat glands that help cool the body through perspiration.

What is the hypodermis?

The deepest layer of the skin that contains fat cells for insulation.

What is adipose tissue?

Tissue composed of fat cells.

What characterizes a first-degree burn?

Involves only the epidermis, causing redness and pain without blisters.

What are the symptoms of a second-degree burn?

Includes epidermis and dermis damage, redness, pain, and blisters.

What is a third-degree burn?

A full-thickness burn affecting all layers of the skin.

What is anesthesia in relation to burns?

Absence of sensation, often associated with deeper burns.

What immediate treatment is prioritized for burn victims?

Fluid replacement to prevent hypovolemic shock.

What is debridement?

The process of removing dead tissue from a wound.

What is an autograft?

A skin graft taken from the same person to cover a burn.

What are common risk factors for burn infections?

Loss of skin coverage exposing the body to bacteria.

What is the significance of the skin's ability to regenerate?

It can heal itself, although significantly burned skin may not regenerate well.

What should be controlled in burn unit environments?

Visitor access to minimize infection risk.

What structures contribute to sensory perception in the skin?

Nerves that detect pain, temperature, touch, and pressure.

What are dermal papillae?

Structures in the epidermis that form fingerprints.

What do sweat glands excrete besides water?

Salt and organic waste.

What is the purpose of sweating?

To cool the body by evaporation.

What occurs to skin blood supply in extreme temperatures?

Blood flow is redirected or increased to maintain temperature.

How do sebaceous glands contribute to skin health?

They produce oil that moisturizes the skin and creates an inhospitable environment for bacteria.

What is the effect of UV rays on the skin?

Can cause damage and increase the risk of burns.

What happens to the skin when it is burned?

Skin loses its barrier function, potentially leading to dehydration and infection.

What term indicates an increase in skin sensation?

Hyperesthesia.

What is the outermost layer of skin called?

Epidermis.

How does the skin cool the body during exercise?

Through perspiration and increased blood flow to the skin's surface.

What factors affect the thickness of the hypodermis?

The amount of adipose (fat) tissue present in individuals.

What can excessive UV exposure lead to?

Skin burns and increased risk of skin cancer.

What can be a visible result of a third-degree burn?

Charred or blackened skin tissue.

Why is it difficult to insert an IV into a burn victim?

Due to damage to blood vessels and tissue.

What do the hair follicles do?

They house the roots of hair and sebaceous glands provide oil to the hair.

What type of burn affects the epidermis only?

First-degree burn.

What is the difference between a first-degree burn and a second-degree burn?

First-degree affects only the epidermis, while second-degree affects the epidermis and part of the dermis.

What does the term 'hypovolemic shock' refer to?

A life-threatening condition resulting from significant fluid loss.

How does the skin help in excretion?

Through sweat, which contains waste products.

What is the role of the nervous system in the integumentary system?

To provide sensory perception of stimuli such as temperature and pain.

What layers of skin are involved in a second-degree burn?

Both the epidermis and dermis.

What are the consequences of prolonged exposure to a fire?

Uneven burns and varying symptoms due to different temperatures affecting different areas of the skin.

What concept is indicated by the term 'melanocytes'?

Cells in the epidermis responsible for producing melanin.

What kind of graft involves tissue from a donor?

Allograft.

What is a common treatment to prevent infection in burn victims?

Administering antibiotics and keeping the area clean.

What does a 'burn unit' do for patients?

Provides specialized care focused on the treatment of burns.

How is skin grafting performed?

By removing skin from a donor area and placing it over the burn site.

What is the importance of skin in regulating temperature?

It helps maintain a stable internal body temperature.