keratinizes
Grows tough protein
Keratinizes means becomes hardened through the production of keratin, the fibrous protein that forms hair, nails, horns, and the outer layer of skin.
Cells that keratinize fill with keratin and die, creating tough, protective tissue: As skin cells migrate outward, they keratinize and eventually slough off.
Pointed animal headgear
Outermost tissue layer
- callusHardened protective skin
- epitheliumTissue covering body surfaces
- dermatologyStudy of skin ailments
- psoriasisImmune system attacks skin cells
Dead skin at nail base
- nailbedSkin under fingernails
- fingernailsKeratin digit coverings
- toenailsFoot digit coverings
- growthIncrease in size
biotin · calcium · hardening · thickness · brittleness · manicure · pedicure · clippers
Recognizing meaningful differences
- hardeningBecoming less soft
- cytoskeletonInternal protein support structure
- apoptosisProgrammed cell death
- maturationProcess of becoming complete
Obstruction preventing passage
- armorProtective combat covering
- shieldingProtecting from harm
- waterproofingMaking impervious to moisture
- tougheningMaking more resistant
horn
Pointed animal headgear
feather · scale · baleen · quill · tortoiseshell · talons · spurs
epidermis
Outermost tissue layer
- callusHardened protective skin
- epitheliumTissue covering body surfaces
- dermatologyStudy of skin ailments
cuticle
Dead skin at nail base
- nailbedSkin under fingernails
- fingernailsKeratin digit coverings
- toenailsFoot digit coverings
growth · biotin · calcium · hardening · thickness · brittleness · manicure · pedicure · clippers · file
differentiation
Recognizing meaningful differences
- hardeningBecoming less soft
- cytoskeletonInternal protein support structure
- apoptosisProgrammed cell death
barrier
Obstruction preventing passage
- armorProtective combat covering
- shieldingProtecting from harm
- waterproofingMaking impervious to moisture
follicle
Skin cavity growing strands
strand · fiber · protein · texture · coarseness