Dense irregular connective tissue. Dense irregular connective tissue has fibers that are not arranged in parallel bundles as in dense regular connective tissue. Substances formed[edit] This tissue comprises a large portion of the dermis. This type of tissue is also in the protective white layer of the eyeball and in the deeper skin layers.
Definition of VERMICULITE. : any of various micaceous minerals that are hydrous silicates resulting usually from expansion of the granules of mica at high temperatures to give a lightweight highly water-absorbent material.
Vermiculite and peat moss are often used in conjunction to increase the water-and air-holding capacity of a growing medium.ommon Uses. Vermiculite and peat moss are often used in conjunction to increase the water-and air-holding capacity of a growing medium. A ratio of 1 part peat moss to 2 parts vermiculite is a common formulation, plus the addition of other ingredients, depending on the purpose of the medium.