What category of glands would you observe in the following cases :
(i) Sweat glands in the mammalian skin (ii) Sweat glands present in the armpits
(iii) Salivary glands (iv) Milk glands of humans
(v) Oil glands in human skin (vi) Glands present in crypts of lieberkuhn

Explanation

(i) Simple coiled tubular glands (ii) Simple branched tubular glands
(iii) Compound tubular glands (iv)Compound saccular glands
(v) Simple branched saccular glands (vi) Simple straight tubular glands