Ch4 HW

What pigment found in skin originates from outside the body?

carotene

What is the function of epidermal dendritic cells?

ingest foreign substances and activate the immune system

Which type of skin cancer is the least malignant but most common?

basal cell carcinoma

Which effect of aging is accelerated by smoking and sun exposure?

loss of skin elasticity

Which type of skin cancer the least common but is the cause of most skin-cancer-related deaths?

melanoma

Which cavity would be lined with a mucous membrane?

oral cavity

What is the function of the keratin found within skin cells?

prevents water loss

Under which of the following conditions would a decubitus ulcer form? - exposure to human herpesvirus 1 - prolonged bed rest after a severe back injury - prolonged exposure to UV light - third-degree burns

prolonged bed rest after a severe back injury

Acne is an infection of the __________ glands.

sebaceous

What prevents skin from becoming brittle?

sebum

What type of burn does a patient have if blisters are present and the affected area is painful?

second degree

What type of membrane lines the compartments of the ventral body cavity and produces a lubricant that allows organs to move against neighboring organs without friction?

serous membrane

What type of membrane provides lubrication to the pleural, pericardial, and peritoneal cavities?

serous membrane

What type of tissue makes up the epidermis of the skin?

stratified squamous epithelium

Which layer of the epidermis contains the greatest concentration of keratin?

stratum corneum

What epidermal layer consists of multiple layers of living keratinocytes and scattered dendritic cells?

stratum spinosum

Which of these statements describes the papillary layer of the skin? - This layer contains dendritic cells and Merkel cells. - This deep layer of the dermis is made of irregularly arranged connective tissue fibers. - Dermal papillae contain capillary loops to nourish the epidermis. - Melanocytes in this layer provide protection from UV radiation.

Dermal papillae contain capillary loops to nourish the epidermis.

Which structures are located in the epidermis?

Merkel cells or discs

What type of burn damages the skin so severely that regeneration of the damaged tissue is NOT possible?

third-degree burn

Which important metabolic compound is produced by skin cells?

vitamin D

What causes hair to stand up and the skin to dimple when one is cold or frightened?

contraction of arrector pili muscles

Mountain climbers frequently experience a bluing of the skin at elevations above 2,500 meters. This bluing of the skin is known as __________.

cyanosis

What condition occurs when hemoglobin is deprived of oxygen?

cyanosis

Which glands play a role in thermoregulation?

eccrine glands