Practical nursing : a text-book for nurses . and favus. There is also a disease of themucous membrane of the mouth, known as thrush,which is due to a microorganism, known as the 1 Latin alga—seaweed (plural algae). Bacteriology 37 oidium albicans, that resembles both yeasts andmolds. Conditions which Favor the Development ofMolds.—The conditions that favor the developmentof the molds are the same as those which favor that ofbacteria. The more important of these, as previously-stated, are (i) the presence of material upon whichthey can feed, (2) moisture, (3) warmth, (4) anabsence of sunlight.
Practical nursing : a text-book for nurses . and favus. There is also a disease of themucous membrane of the mouth, known as thrush,which is due to a microorganism, known as the 1 Latin alga—seaweed (plural algae). Bacteriology 37 oidium albicans, that resembles both yeasts andmolds. Conditions which Favor the Development ofMolds.—The conditions that favor the developmentof the molds are the same as those which favor that ofbacteria. The more important of these, as previously-stated, are (i) the presence of material upon whichthey can feed, (2) moisture, (3) warmth, (4) anabsence of sunlight. Protozoa Nature. — Protozoa — singular, protozoon — aresingle-cell animals. They vary in size, the smallestones being the size of the smallest bacteria and thelargest about one quarter of an inch in length. Manner of Movement.—Some protozoa haveminute, delicate, hair-like projections, called cilia,extending from their wall, which propel the organismwith a soft wave-like mo-tion. Others have fewer, butcoarser, projections called. flagella, to which they owe Fig. I. Ameboid Movementstheir power of motion, and still others move by what is often designated ame-boid movement, because it is the movement charac-teristic of a very common species of protozoa knownas the ameba. The ameba moves about and also ab-sorbs nourishment by constantly changing its shapeand extending out from its circumference processes ofprotoplasm called pseudo podia. Pathogenic Protozoa.—Different species of pro-tozoa are the cause of several serious kinds of cattle 38 Practical Nursing plagues, and, especially in the tropics, there areseveral other species that cause diseases in man; ofthese the most common are: malaria, amebic dysen-tery, and the sleeping sickness, a disease common incertain parts of Africa. The specific microorganismcausing hydrophobia, it is thought, is of this type,but this is still uncertain. Transmissions of Protozoa.—The protozoawhich give rise to amebic dysentery are us
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