Tubular gland

If glands are categorized by shape, tubular glands contrast with alveolar glands. Tubular glands retain their shape as a tube throughout their length whereas alveolar glands have a saclike secretory portion.A diagrammatic sectional view of the skin (magnified).Vertical section of mucous membrane of human uterus.Skin If glands are categorized by shape, tubular glands contrast with alveolar glands. Tubular glands retain their shape as a tube throughout their length whereas alveolar glands have a saclike secretory portion.