Question

1. the combining forms that mean

ail\ are:
kerat/o- and lipo-
trich/o- and pilo-
coni/o- and dacryo-
unguin/o- or onycho-

1. the combining forms cutane/o- (cutaneous), pel/o- (pellagra), -derm- (ep/iderm/is and dermat/itis) , and cut/i- (cut/icle) all mean:

upper skin
sweat
skin
horny tissue

Explanation:

Question 5

To solve this, we analyze each option:

• "kerat/o-" means horn/homy tissue, "lipo-" means fat, so not nail.
• "trich/o-" and "pilo-" relate to hair, not nail.
• "coni/o-" relates to dust, "dacryo-" to tears, not nail.
• "unguino-" and "onycho-" are combining forms meaning nail (e.g., onychomycosis is nail fungus).

Analyze each option:

• "upper skin" is incorrect as these terms refer to skin generally, not just upper.
• "sweat" is wrong; terms for sweat are like "hidr/o-".
• "skin": "cutane/o-" (cutaneous = skin - related), "pel/o-" (pellagra affects skin), "-derm-" (epidermis, dermatitis involve skin), "cut/i-" (cuticle is part of skin/nail area but root means skin). So they all mean skin.
• "horny tissue" is "kerat/o-", not these.

Answer:

D. unguin/o- or onycho-

Question 6