SKIN

1. 1The skin has a surface area of between :
   

   1. A1.8 - 2.0 m2
   2. B0.5 - 4.5 m2
   3. C4.5-5 m2
2. 2Adult skin has a mass of between:
   

   1. A4.5 and 5 kg
   2. B3.0 and 4 kg
   3. C5.0 and 6.0 kg
   4. D3.0 and 5.0 kg
3. 3What is the outer layer of the skin called?

   1. Adermis
   2. Bepidermis
   3. Chyperdermis
4. 4What is the stratum basale ?

   1. Amultiple rows of closely packed, many sided keratinocytes tightly linked by desmosomes
   2. Bmultiple rows of flattened keratinocytes containing darkly staining keratohyalin granules and lipid-rich lamellar bodies – on release these form an hydrophobic, impermeable barrier
   3. Csingle layer of columnar keratinocytes resting on a basement membrane: site of production of new keratinocytes
   4. Dmultiple rows of dead, flat, enucleate keratinocytes that comprise mostly cross-linked keratin fibres (squame cells)
5. 5What is the stratum spinosum?
   

   1. Asingle layer of columnar keratinocytes resting on a basement membrane: site of production of new keratinocytes
   2. Bmultiple rows of closely packed, many sided keratinocytes tightly linked by desmosomes
   3. Cmultiple rows of clear, flat, dead, keratin-rich keratinocytes; present only in thick skin *ONLY IN THICK SKIN*
6. 6stratum granulosum?
   

   1. Amultiple rows of clear, flat, dead, keratin-rich keratinocytes; present only in thick skin *ONLY IN THICK SKIN*
   2. Bmultiple rows of dead, flat, enucleate keratinocytes that comprise mostly cross-linked keratin fibres (squame cells)
   3. Cmultiple rows of flattened keratinocytes containing darkly staining keratohyalin granules and lipid-rich lamellar bodies – on release these form an hydrophobic, impermeable barrier
7. 7stratum lucidium?

   1. Amultiple rows of clear, flat, dead, keratin-rich keratinocytes; present only in thick skin *ONLY IN THICK SKIN*
   2. Bmultiple rows of dead, flat, enucleate keratinocytes that comprise mostly cross-linked keratin fibres (squame cells)
   3. Cmultiple rows of closely packed, many sided keratinocytes tightly linked by desmosomes
8. 8stratum corneum ?
   

   1. Amultiple rows of dead, flat, enucleate keratinocytes that comprise mostly cross-linked keratin fibres (squame cells)
   2. Bmultiple rows of clear, flat, dead, keratin-rich keratinocytes; present only in thick skin *ONLY IN THICK SKIN*
   3. Cmultiple rows of closely packed, many sided keratinocytes tightly linked by desmosomes
9. 9Keratins, which is false?

   1. Afamily of cytoskeletal filament-forming proteins
   2. Bcomprise 50-55 % of total protein in the epidermis
   3. Ccomprise 80 - 85 % of total protein in the stratum corneum
   4. Dform branching, rope-like bundles in the cell cytoplasm
   5. Emaintain the structural integrity of the epidermis
10. 10Skin colour is function of the absolute and relative amounts :

    1. Amelanocytes present
    2. Beumelanin and pheomelanin
    3. Ceumelanin
    4. Dpheomelanin

11. 11what is stage 3 of hair growth phase?

    1. AAnagen
    2. Bcatagen
    3. Ctelogen
    4. Dexogen
12. 12What is false about apocrine?

    1. A25% of the total
    2. Bactive from puberty
    3. Cactive from shortly after birth
    4. Dactivity linked to emotional state
13. 13What is false about eccrine?

    1. Ahypotonic and slightly acidic
    2. Bactive from shortly after birth
    3. C75% of total
    4. D25% of total
14. 14What layer acts as a permeability barrier that minimises Trans-Epidermal Water Loss (TEWL) ?

    1. Astratum lucidium
    2. BStratum corneum
    3. Cstratum spinosum
15. 15Which statement is correct?

    1. AIn the human epidermis stem cells are located in specialised ‘niches’ within the inter-follicular epidermis and bulge region of the hair follicle
    2. BIn the human dermis stem cells are located in specialised ‘niches’ within the inter-follicular dermis and bulge region of the hair follicle
    3. CIn the human hyperdermis stem cells are located in specialised ‘niches’ within the inter-follicular hyperdermis and bulge region of the hair follicle

Description

Quiz on SKIN, created by amymacdonald208 on 27/02/2016.

Author

amymacdonald208

Language

English

Views

0

Rating

No ratings yet

Rate this quiz

Rate this quiz

More on Skin Structure and Layers