Chapter 5 Integumentary System Flashcards
Which layer of the skin is composed of a keratinized stratified squamous epithelium?
Epidermis
Which pigment secreted by specialized cells in the skin is capable of absorbing ultraviolet light?
Melanin
Which epidermal cell has a role in immunity and disease resistance?
Intraepidermal macrophages (Langerhan‘s cells)
Which layer of the epidermis is composed of a single row of cuboidal or columnar keratinocytes
Stratum basale
Which layer of the epidermis contains layers of flattened keratinocytes that are going through apoptosis
Stratum granulosum
What is the layer of the skin that is only present in thick skin?
Stratum luciderm
Constant exposure of the skin to friction stimulates the formation of a callus, which is a thickening of what layer of the epidermis?
Stratum corneum
What does the process of keratinization involve?
Cells that accumulate as a tough fibrous protein that helps protect the skin
Which layer of the skin is composed mainly of dense irregular connective tissue containing collagen and elastic fibers
Dermis
Albinism is the inherited condition that is the inability to produce what?
Melanin
What are the characteristics of thick skin?
Found in palms, soles of feet and fingertips
Does not contain hair follicles
Contains more sweat glands than thin skin
Contains epidermal ridges
Which of the following structures found in the skin plays an important role in thermoregulation? A) merkel cells B) sebaceous glands C) sweat glands D) nails E) fingerprints
C) sweat glands
Which of the following structures found in the skin help prevent water loss and inhibit bacterial growth on the surface of the skin? A) arrector pili B) Lunula C) sweat glands D) hair follicles E) oil glands
E oil glands
What is the name of the fine non-pigmented hair that covers the body of the fetus?
Vellus
What type of exocrine gland is a simple, branched acinar gland connected to a hair follicle?
Both sebaceous and sudoriferous
Which of the following is a mixture of triglycerides, cholesterol, proteins and inorganic salts? Sweat Lanugo Vellus Sebum Mucus
Sebum
Which type of exocrine gland is a simple, coiled tubular gland that is found throughout almost the entire skin?
Eccrine sweat glands
In which type of scar does the scar tissue extend beyond the boundary of the injury into normal tissue?
Keloid scar
Which condition is due to a buildup of bilirubin pigment in the skin?
Jaundice
Which term refers to the paleness of the skin as seen in patients with shock or anemia?
Pallor
Which conditions results from androgens inhibiting hair growth in genetically predisposed adults?
Male pattern baldness
What is the term that refers to an inflammation of the skin characterized by patches of redness, blistering and extreme itching?
Eczema
What is the term that refers to a hardened and thickened area of skin resulting from persistent pressure and friction
Callus
What is the term for an irregular tear of the skin?
Laceration
