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Terms in this set (28)

Bacteria: single cell organisms, live as normal flora on and in skin, eyes, nose, mouth, upper throat, lower urethra, lower intestine, and large intestine, capable of causing disease in humans when they overgrow due to immune system compromise or when they enter different areas of the body, they have different sizes, shapes, growth patterns, and means of replication, named according to their shape and are classified by their ability to live with or without oxygen (aerobic/anaerobic) and their staining qualities (gram positive/negative), reproduce by dividing (one cell becomes two identical cells), treated with antibiotics

Fungi: single cell organisms that can cause infection, ex: molds and yeasts, present in air, soil, and water and are responsible for conditions such as athlete's foot, ringworm, and yeast infections, treated with anti-fungal meds

Parasites: organisms that live on or in other organisms, ex: protozoa, helminths, arthropods, typically transmitted by sexual contact, insects, and domestic animals, cause many diseases
-protozoa = malaria
-helminths = intestinal worm infestations
-arthropods = transmitting skin and systemic diseases (ringworm & malaria)

Viruses: smallest microorganisms, reproduce inside living cells of the host and are responsible for causing many different types of disease, illnesses range from the common cold to acquired immune deficiency syndrome (AIDS), cannot by killed by antibiotics, antiviral meds are given to manage symptoms, if given during the early phases of illness can decrease the amount of time that the patient has viral symptoms