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+ Integumentary
Anatomy
Question | Answer |
---|---|
The skin is made up __________ layers | 3 epidermis, dermis, hypodermis |
Epidermal cells are avascular or vascular | Avascular: they do not have direct blood supply from capillaries |
Which cells give skin their color by producing pigment | melanocytes |
Which cells produces and contain keratin. | 90% of epidermal cells |
Which cells synthesize Vit D with exposure to the sun? | Keratinocytes cells |
Which layer is only present in thick skin: palms of hands and soles of the feet | Lucidum |
which layer is names for microscopic granules; makes skin water proof | Granulosum |
Which layer contains Langerhans cells for immune protection, appears spiny under a microscope | Spinosum |
Which layer divides quickly to replace damaged or old cells and is attached to the basement membrane | Germinatavum |
Which layer is 20-30 layers of dead, keratinized cells and forms a protective superficial layer | corneum |
What is the dermis made of | connective tissue, fibroblasts, mast cells, macrophages and adipose cells |
What determines the elasticity, strenth, consistency and texture of skin | elastin, collagen and water |
Where are Merkel cells found | tips of fingers and toes, surrounding sensory nerves |
Which muscle is attached to hair, found in the skin | Arrector Pilli |