Exam 2 Slide Show Integumentary (pt5) Flashcards
What type of glands are aprocrine sweat glands?
Merorcrine glands
Both eccrine and apocrine sweat glands contain which cells?
Myoepithelial cells
In what condition do keratinocytes divide and move more quickly than normal from the stratum basale to the stratum corneum, and shed prematurely?
Psoriasis
Which sweat gland is smaller and excretes directly onto the surface of the skin?
Eccrine sweat glands
Virtually all skin cancers are attributed to what?
Excessive exposure to the sun
What are the three common forms of skin cancer?
Basal cell carcinomas (most common)
Squamos cell carcinomas
Malignant melanomas (least common, most life threatening)
What are specialized actin-containing epithelial cells that contract to expel glandular secretions
Myoepithelial cells
What is the inherited inability of an individual to produce melanin, so it is missing from their hair, eyes, and skin
Albinism
Albinism mostly occurs because of what reason?
Melanocytes are unable to synthesize tyrosinase
Which form of skin cancer is the most common?
Basal cell carcinomas
What may be an autoimmune disorder in which the melanocytes are attacked and killed.
Vitiligo
Which sweat gland is larger and secrete into the pilary canal of a hair follicle?
Aprocrine sweat glands
Which form of skin cancer is the most life threatening?
Malignant melanomas (least common)
What is cyanosis due to?
Hemoglobin being depleted of oxygen and looking deep, purplish blue
What is the partial or complete loss of melanocytes from patches of skin?
Vitiligo
What is redness of the skin known as?
Erythema
During epidermal wound healing, what moves up to form the more superficial layers?
Keratinocytes
What causes Jaundice?
A buildup in the blood of the yellow pigment bilirubin
What is an inflammation of the skin characterized by redness, itching, and swelling, and caused by exposure of the skin to chemicals that bring about an allergic reaction
Contact dermatitis
Jaundice usually indicates what?
A liver disease
Fibroblasts produce what?
Collagen
What is a partial or complete lack of hair?
Alopecia
Where do fibroblasts come from?
Mesenchymal cells pluerapotent)
Explain the order of deep wound healing.
- blood clot forms
- fibroblasts migrate in the wound and produce collagen fibers
- Growth of epidermal cells beneath the scab and regeneration of blood vessels
- Scab is lost
