A)block UV rays from the sun.
B)toughen the outer layers of the skin.
C)act as a water-repellent sealant.
D)link dead keratinocytes together in the stratum corneum.
E)help form vitamin D.

A)orbicularis muscle
B)sebaceous bundle
C)arrector pili muscle
D)hair matrix
E)none of the choices is correct

A)ceruminous glands
B)sudoriferous glands
C)sebaceous glands
D)oil glands
E)salivary glands