large waterproof covering. UV light and chemical protection
What is skin
100
Hot, cold, pressure are all symptoms of what?
What is Sensation
100
covered by skin
What is Root
100
Common pre-malignant lesions found on sun-exposed areas of the body; appears as an area of rough, vascular skin, which later forms a yellow crust.
What is actinic keratosis
100
These produce melanin
What is Melanocytes
200
hair, nails, glands are what structures
What is accessory structures
200
light, heat, water loss, foreign substances are all symptoms of what?
What is Protection
200
white crescent
What is Lunula
200
An inflammatory disease of the sebaceous glands and hair follicles.
What is acne vulgaris
200
There are interlocking cellular bridges
What is Desmosomes
300
sensation, protection, thermoregulation, and secretions are all what?
What is Functions of the Integumentary System
300
blood vessel dilation and sweating
What is thermoregulation
300
modified epidermal cells. Consist of Lunula, body, root. Growth occurs from the nailbed
What is Nails
300
Loss or absence of hair, especially on the scalp; a result of heredity, aging process, systemic illness, or dermatitis; aka baldness.
What is alopecia
300
There main role is to produce keratin, the fibrous protein that helps give the epidermis its protective properties.
What is Keratinocytes
400
Composed of (The stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, and stratum germinativum)
What is the Epidermis upper layer.
400
sebum, sweat, Vitamin D are all examples of what?
What is secretion
400
covers most of the surface of the body. Three parts - cuticle, cortex, medulla. Consist of Shaft, Root, and Arrector pili.
What is Hair
400
An inflammation of the skin that tends to occur in patients with a family history of allergic conditions; aka - eczema.
What is atopic dermatitis
400
These are present at the epidermal-dermal junction. Shaped like a spiky hemisphere. Each cell is associated with a disclike sensory nerve ending. (touch receptors)
What is Merkel or Tactile Cells
500
lower layer of skin
What is the Dermis
500
Sebaceous and Sweat are called what?
What is Glands
500
visible portion of hair
What is Shaft
500
The most serious of the 3 types of skin cancer; arises in the epidermal melanocytes.
What is malignant melanoma
500
These arise from bone marrow and migrate to the epidermis. Also called Langerhans cells.
Functions: they ingest foreign substances and are key activators of the immune system.