Quiz
Structure of Skin
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Questions in this quiz (48)
1What are the functions of skin?
- AProtection
- BThermoregulation
- CFat store
- DSensation
- EProduce vitamin C
- FProduce vitamin D
2What is the most superficial layer of skin?
- ADermis
- BEpidermis
- CSubcutis
3How many layers make up the epidermis?
- A5 in normal skin, 4 in thick skin
- B4 in normal skin, 5 in thick skin
4What is the deepest layer of the epidermis?
- AStratum corneum
- BStratum lucidum
- CStratum Granulosum
- DStratum Spinosum
- EStratum Basale
5What is the most superficial layer of the epidermis?
- AStratum Corneum
- BStratum Lucidum
- CStratum Granulosum
- DStratum Spinosum
- EStratum Basale
6Which layer of the epidermis is only found in thick skin?
- AStratum corneum
- BStratum lucidum
- CStratum granulosum
- DStratum spinosum
- EStratum basale
7Where on the body would you find thick skin?
- ASoles of the feet
- BKnees
- CFingertips
- DPalms of the hands
- ELips
8Between which layers of the epidermis is the stratum lucidum found?
- ABetween the stratum corneum and the stratum granulosum
- BBetween the stratum granulosum and the stratum spinosum
- CBetween the stratum spinosum and the stratum basale
9What is the function of the stratum basale?
- AEndure the normal wear and tear of everyday life
- BProduce keratin and hydrophobic substances which keep the skin waterproof
- CAllow keratinocytes to mature and play a role in immune function
- DConstantly produce keratinocytes
10What is the function of the stratum granulosum?
- AEndure the normal everyday wear and tear
- BProduce keratin and hydrophobic substances that keep skin waterproof
- CAllow keratinocytes to mature and have a role in immunity
- DConstantly produce keratinocytes
11What is the function of the stratum corneum?
- AEndure the everyday wear and tear of everyday life
- BProduce keratin and hydrophobic substances that help to keep skin waterproof
- CAllow keratinocytes to mature and has a role in immune function
- DConstantly produce keratinocytes
12What is the function of the stratum spinosum?
- AEndures the normal everyday wear and tear
- BProduces keratin and hydrophobic substances that help to keep skin waterproof
- CAllow keratinocytes to mature and has a role in immunity
- DConstantly produces keratinocytes
13How many days, on average, does it take for cells produced in the stratum basale to reach the stratum corneum?
- A2 days
- B5 days
- C10 days
- D20 days
- E50 days
14In what dermatological disease is the turnover of keratinocytes increased?
- AAtopic eczema
- BPsoriasis
- CImpetigo
- DTinea
15Which of the following are non-keratinising cells that can be found in the epidermis?
- AMerkel cells
- BBeta cells
- CLangerhan cells
- DMelanocytes
- EKpuffer cells
- FKeratinocytes
16What are Langerhan cells
- APhagocytes
- BAntigen Presenting Cells
- CPigment Producing Cells
17What are Merkel Cells thought to do?
- AAct as sensory receptors
- BProduce the pigment that gives skin its colour
- CProduce collagen
18What keeps the dermis and the epidermis separate?
- AA layer of fat
- BA layer of type II collagen
- CA basement membrane
19What is the name of the upper layer of the dermis?
- APapillary dermis
- BReticular dermis
20What is the name of the lower layer of the dermis?
- APapillary dermis
- BReticular dermis
21Which of the following is not found within the dermis?
- AFibroblasts, fibrocytes and their extracellular products
- BCollagen and elastin
- CMelanocytes
- DGlycosaminoglycans
- EBlood vessels and nerves
- FSome immune cells
22Where is the deep vascular plexus?
- AStratum basale of the epidermis
- BReticular dermis only
- CReticular dermis, with small branches entering the papillary dermis
23Where is the superficial vascular plexus?
- AStratum basale of the epidermis
- BReticular dermis only
- CReticular dermis, with branches running into the papillary dermis
24Why does blood flow within the skin need to be variable?
- ATo allow sensation
- BTo allow blood to be directed to other areas of the body when they functioning more than usual
- CFor thermoregulation
25What nervous system allows the blood flow to the skin to be changed by constricting some of the anastamoses?
- ASympathetic nervous system
- BParasympathetic nervous system
26What are the four different types of nerve endings found in the dermis?
- AFree nerve endings
- BFixed nerve endings
- CPacinian corpuscles
- DMeissner's corpuscles
- EMerkel cellls
- FLangerhan cells
27What is the subcutis predominantly made up of?
- AType II collagen
- BType I collagen
- CAdipose tissue
- DMelanocytes
28What are the functions of the subcutis?
- AHeat insulator
- BProduce vitamin D
- CAct as a food store
- DProduce melanin
- EProduce type II collagen
- FAct as a shock absorber
29Which of the following are associated with hair follicles?
- AApocrine sweat glands
- BEccrine sweat glands
- CSebaceous glands
- DArrector pili muscles
30What do sebaceous glands produce?
- AWatery substances
- BSebum
- CKertain for hair formation
31What is the function of sebum?
- AIt has antibiotic functions and protects us from bacteria
- BIt moisturizes skin and hair
- CIt allows us to lose heat when we are too hot
32Hair and nails are made out of the same substance: keratin. True or false?
- ATrue
- BFalse
33What does soft keratin contain that hard keratin does not?
- AGranular layer
- BAdipose tissue
- CType II collagen
34What are the two types of sweat gland found in skin?
- ASebaceous
- BApocrine
- CEccrine
35Which of these sweat glands produces smelly sweat?
- AApocrine
- BEccrine
36What is the mechanism of secretion for eccrine sweat glands?
- AHolocrine
- BApotosis
- CMerocrine
37How are eccrine sweat glands innervated?
- ASympathetic cholenergic control
- BSympathetic adrenergic control
- CParasympathetic cholenergic control
38Where on the body are apocrine sweat glands found?
- AHands and feet
- BArmpits
- CGenitalia and groin
- DEverywhere that there is thick hair on the body
39What is the innervation of apocrine sweat glands?
- ASympathetic adrenergic control
- BSympathetic cholenergic control
- CParasympathetic cholenergic control
40What is the function of vitamin D?
- ARegulates calcium and phosphate metabolism
- BRegulates sodium and calcium metabolism
- CRegulates sodium and potassium metabolism
41How much vitamin D is produced by our skin?
- A25%
- B55%
- C70%
- D90%
42Lack of vitamin D in adults can cause what disease?
- AOsteomalacia
- BOsteoarthritis
- CRickets
- DOsteoporosis
43Where in the body is vitamin D activated?
- ABlood vessels
- BKidneys
- CSpleen
44In what layer of the epidermis are melanocytes found?
- AStratum corneum
- BStratum lucidum
- CStratum granulosum
- DStratum spinosum
- EStratum basale
45What is the histological appearance of melanocytes?
- ADark, flat cells resting on the basement membrane
- BCells with many dendrites which mostly penetrate the basale layer
- CRound cells with visible granules inside
46What does melanin do?
- AGives skin its colour
- BProtects the skin from harmful UV radiation
- CAll of the above
47What are the two types of melanin?
- AEumelanin
- BPheomelanin
- CFibromelanin
- DNeomelanin
48How do these two types of melanin cause the wide range of skin colours seen in humans?
- AThey are mixed in different ratios
- BDarker skinned people have more melanin than lighter skinned people
- CLighter skinned people only have one type of melanin
Information
- Description
- Quiz on Structure of Skin , created by MPusey on 29/12/2014.
- Author
- MPusey
- Language
- English
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- 84
- History
- Created on 29 Dec 2014 · updated on 29 Aug 2016
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