Quiz: Integumentary System, Chapter 5 Flashcards
A needle would pierce the epidermal layers of the forearm in which order?
corneum, granulosum, spinosum, basale
Most abundant cells of the epidermis…
Keratinocytes
The protein found in the epidermis responsible for toughening the skin…
Keratin
Cells plus a disc-like sensory nerve ending that functions as a sensory receptor for touch…
Merkel disc
Skin macrophages that help activate the immune system, migrating from marrow
Dendritic cells (Langerhans’ cells)
Cutaneous receptors specialized for the reception of touch or light pressure…
Meissner’s corpuscles
Cutaneous receptors specialized for the reception of vibration and pressure…
Pacinian corpuscles
Unspecialized cutaneous receptors that detect pain…
Free nerve endings
Cutaneous receptors that detect temperature, found in genitals, mucous membranes, lips and tongue
Bulboid corpuscles (aka. Krause’s end-bulbs)
The hypodermis is an effective shock absorber because…
It is largely adipose tissue
Melanocytes and keratinocytes work together in protecting the skin from UV damage when keratinocytes…
Accumulate the melanin granules on their superficial portion, forming a UV-blocking pigment layer
Layer of the epidermis is responsible for cell division and replacement…
Stratum basale
Layer of the epidermis responsible for protection from excessive water loss…
Lamellar granules that secrete glycolipids into the extracellular spaces of the skin are found in stratum granulosum
Cells found in the dermis are…
Fibroblasts, macrophages and mast cells
Dermal layer responsible for tension lines in the skin…
Reticular layer
The dermis can be stretched or torn, indicated by…
Visible, silvery-white scars on the skin
How does the body’s natural defenses protect against the effects of UV damage?
Prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen
How might Addison’s disease affect the appearance of the skin?
Darkens the skin unevenly, appearing patchy or metallic
A dendritic or Langerhan cell is a specialized…
Phagocytic cell
Glands that produce ear wax…
Ceruminous glands
Two types of sweat glands…
Eccrine and Apocrine
Apocrine glands are found…
In axillary and anogenital areas
First threat to life from a third-degree burn?
Dehydration
