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Mastering A&P Module 1: Section 5.01-5.02

Terms in this set (23)

Match the following cells with their function: Dendritic (Langerhans) cells.
Ingest foreign substances and are key activators of our immune system
One main difference between thin skin and thick skin is that __________.
in thin skin, the stratum lucidum appears to be absent
An injection is administered through the skin using a hypodermic needle. Identify the first integumentary structure through which the needle will pass.
epidermis
Which of the following cells function as sensory receptors for touch?
Tactile epithelial cells (Merkel cells)
Select the layer of the epidermis that contains anucleate cells, or cells that no longer have nuclei.
Stratum corneum
The epidermis is composed of which of the following tissues?
Keratinized stratified squamous epithelial tissue
The photomicrograph shows the layers of the epidermis present in thin skin. Which letter represents where the stratum lucidum would be found in a tissue section taken from skin in the fingertips, palms, and the soles of the feet?
B
Match the following skin layer with its description: Stratum granulosum.
One to five layers of flattened keratinocytes with keratohyaline and lamellar granules
Match the following epidermal cell type with its function: Tactile epithelial cells.
Sensory receptors for touch
Which of the following epidermal components possesses a waterproofing glycolipid that functions in preventing water loss?
Lamellar granules
Match the following epidermal cell type with its function: Keratinocytes.
Produce a tough fibrous protein that gives the epidermis most of its protective qualities
Match the following structure with its primary tissue type: Subcutaneous tissue.
Adipose tissue
Match the following cells with their function: Tactile epithelial cells,
Sensory detection
The most common (and least malignant) type of skin cancer arises in the stratum basale. In the photomicrograph, which letter marks this layer?
E (stratum basale)
Which of the following lists the layers of the epidermis in thick skin in the correct order from deep to superficial?
Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum
Match the following cells with their function: Keratinocytes.
Make a fibrous protein for skin protection
Match the following epidermal cell type with its function: Melanocytes.
Produce a pigment that protects against ultraviolet radiation
Match the following skin layer with its description: Stratum corneum.
Many cell layers of dead keratinocytes filled with keratin (outermost epidermal layer)
Keratinocytes die when they migrate away from their source of nutrients in the underlying dermis. Above which layer of the epidermis are keratinocytes too far from the dermal capillaries to survive?
Stratum granulosum
Match the following skin layer with its description: Stratum spinosum.
Several cell layers thick, with intermediate filaments, keratinocytes and dendritic (Langerhans) cells
In which layer of the epidermis are 10-25% of the cells melanocytes, a cell type that is prone to cancer in the form of melanoma?
E (stratum basale)
Match the following skin layer with its description: Stratum basale.
Single row of cells mainly composed of keratinocyte stem cells
Match the following skin layer with its description: Stratum lucidum.
A thin, translucent band consisting of a few rows of flat, dead keratinocytes
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