columella

How To Use columella In A Sentence

• The development of the sporogonium proceeds as in the Bryales, but the dome-shaped archesporium extends over the summit of the columella and an air-space is wanting. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"
• The primary, stout capillitial branches arise from the upper part of the columella, dichotomously branching into flexuose threads.
• It appears to be cut from a large bivalve and does not have the twisted shape of a whelk or conch columella.
• -- N.S. (Fig. 141.) Shell fusiform, contracted above the body-whirl, and forming thereby a sub-cylindrical spire; spire obtuse apex papillated and hooked; body-whirl plaited longitudinally at its top; columellar lip furnished with only two plaits. Report of the North-Carolina Geological Survey. Agriculture of the Eastern Counties: Together with Descriptions of the Fossils of the Marl Beds
• Sound is conducted through the middle ear via the stapes or columella (both are ear ossicles derived from the hyomandibular).
• The superior labial artery originates form the columellar artery, which courses up the columella to the region between the domes.
• Vertical bars in (L and M) indicate enlarged region shown in (P and Q). pd, protoderm; pc, procambium; col, columella initials; QC, quiescent center; v, vascular tissue; ep, epidermis; c, cortex; en, endodermis. PLoS Biology: New Articles
• This membrane is somewhat urn-shaped, and encloses a cavity in which are situated the pulverulent mass of spores arranged around a central columella of combined host and fungous tissue.
• The assumption commonly made is that vibrations in the water or air by direct contact cause the tympanic membrane to vibrate; this in turn causes a movement of the columella, which is transmitted to the perilymphatic fluid of the inner ear. Harvard Psychological Studies, Volume 1 Containing Sixteen Experimental Investigations from the Harvard Psychological Laboratory.
• In all other Bryales there is a definite columella extending from the base to the apex of the capsule, the archesporium is derived from the outermost layer of cells of the endothecium, and an air space is formed between the spore-sac and the wall. Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3 "Brescia" to "Bulgaria"