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WorksheetsFunctions of Skin and the Epidermis
Total questions: 20
Worksheet time: 10mins
The functions of the skin include all of these except:
taking in nutrients
Reducing water loss
preventing the entry of microorganisms
regulating body temperature
What is one important function for melanin?
cause the skin to be cooler
increase the amount of blood vessels
strengthen the skin or eyes
absorb harmful UV radiation
What gives the skin color?
vitamin D
sun
melanin
folate
Layer of dead keratinocytes found only in the palms and soles:
Stratum corneum - 1
Stratum lucidium - 2
Stratum granulosum - 3
Stratum spinosum - 4
This layer secretes lipids and keratin to make the skin tough and waterproof:
Stratum corneum - 1
Stratum lucidium - 2
Stratum granulosum - 3
Stratum spinosum - 4
Keratinocytes here have desmosomes adhering the cells which gives rise to this cell layer name:
Stratum granulosum - 3
Stratum spinosum - 4
Stratum basale - 5
melanocyte - 6
Merkel cells and melanocytes are present and mitosis happens here:
Stratum spinosum - 4
Stratum basale - 5
melanocyte - 6
dermis - 7
What are the 5 functions of Skin?
Protection
Regulating body temperature
Sensations
Vitamin D Synthesis
All of these are functions
If you have a decrease in melanin you may also have an increase in which of the following:
Sunburns
Skin cancer
U.V. Damage
DNA Damage
All increase
Sweating, vasodilation, vasoconstriction and goosebumps are examples of:
Maintaining homeostasis temperature
Sensations
Only excretion
Protection
What is the function of keratin?
Protein that toughens and waterproofs
Sweat gland that helps cool
Oil gland to help skin stay soft and hair shiny
Humans near the equator developed dark skin to protect which nutrient that is important for healthy embryonic development and sperm production?
Vitamin D
folate
calcium
hemoglobin
