Chapter 3 - Workbook Flashcards
Describe what happens to someone who has third-degree burns.
There is damage to all skin layers and often damages underlying tissue. Must seek emergency medical attention.
What can cause skin cancer?
Exposure to ultraviolet rays
What are the fingerlike projections that project into the epidermis called?
Dermal papillae
What is the white crescent base of a nail called?
Lunula
An inherited condition in which cells do not produce melanin is what?
Albinism
What gives colour to hair and skin?
Melanin
What is the outer layer of the epidermis called?
Stratum corneum
New epidermal cells are pushed upward through what?
Stratum basale
What is the outer layer of skin consisting of stratified epithelial tissue called?
Epidermis
What is the purpose of sebum?
To lubricate the hair and skin
Describe what happens to someone who has first-degree burns.
There is damage to the epidermis, causing redness, swelling, and pain.
Where is hair not found on the body?
The soles of the feet, the palms, and the lips.
What is the layer of epithelium below the nail?
The nail bed
The dermis is composed mainly of what?
Collagen fibres
What is the visible part of the nail called?
The nail body
What is generally attached to hair follicles by tiny ducts?
Sebaceous glands
What part of the hair is above the skin surface?
The shaft
What is the tough waterproofing protein made up of epidermal cells called?
Keratin
Which layer consists of loose connective tissue and adipose tissue?
Subcutaneous
When skin is exposed to excessive ultraviolet radiation, melanin does what?
Increases
Where do epidermal cells die as they are pushed through?
Stratum corneum
What consists of cells that are constantly dividing by mitosis?
Stratum basale
What is the thick layer of skin beneath the epidermis called?
Dermis
What are the roots of hair made out of?
Hair follicle
