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MC Bio 204 Ch 5
integumentary system
Question | Answer |
---|---|
layers of the epidermis | stratum basale, stratum spinosum, stratum granulosum, stratum lucidum [not present in thin skin], stratum corneum |
thick skin | L/palms and soles of feet || C/contains all 5 layers of epidermis || C/has higher density of sensory receptors and sudoriferous glands || C/does NOT contain hair, sebaceous glands |
thin skin | L/everywhere except the palms and soles of feet || A/thinner strata spinosum and corneum || C/does NOT contain stratum lucidum |
lamellar granules | SF/release lipid-rich secretions, which give skin its water-resistant character || L/certain keratinocytes in the stratum granulosum |
Merkel cells | L/stratum basale || F/involved in the detection of touch |
Langerhans cells | L/stratum basale, with projections into the stratum spinosum || F/participate in immune responses against microbes that invade the skin |