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Exam 3- BIOS 251 Questions with Complete Solutions
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Exam 3- BIOS 251 Questions with Complete Solutions
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Exam 3- BIOS 251 Questions with Complete SolutionsWhat are the three layers of the skin? Correct Answer-epidermis, dermis, subcutaneous
layer
What are the accessory organs of the skin? Correct Answer-sweat glands, oil glands, hair,
nails
What are the functions of the skin? Correct Answer-protection, manufactures Vitamin D,
largest sense organ, thermoregulation, nonverbal communication
What happens to blood vessels in warm weather? Correct Answer-blood vessels dilate
What happens to blood vessels in cold weather? Correct Answer-blood vessels constrict
What does skin have the ability to absorb? Correct Answer-lipid-based drugs
The epidermis is composed of what 5 cell types? Correct Answer-• stratified squamous
epithelium (lining)
• keratinocytes (cells that make keratin)
, Exam 3- BIOS 251 Questions with Complete Solutions
• melanocytes (cells that make melanin)
• langerhans cells (immune cells)
• merkel cells (tactile sensory cells)
What are the epidermis layers from young to old; deep to superficial? Correct Answer-•
stratum basale
• stratum spinosum
• stratum granulosum
• stratum lucidum
• stratum corneum
What are the two types of melanin? Correct Answer-pheomelanin and eumelanin
What is the dermis made of? Correct Answer-connective tissue
What does the dermis contain? Correct Answer-collagen, reticular fibers, elastic fibers, and
fibroblasts
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