Med Term - Ch 3 Flashcards
What are Infectious Diseases?
Diseases caused by certain harmful microorganisms and other parasites that live at the expense of another organism.
Define Pathogen
(PATH-o-jen) An organism capable of causing disease (root path/o means “disease”)
What are Degenerative diseases?
Diseases that result from wear and tear, aging, or trauma (injury) that can lead to a lesion (wound) and perhaps necrosis (death of tissue).
Examples of degenerative Diseases
Common examples include arthritis, cardiovascular problems, and certain respiratory disorders such as emphysema.
Define Neoplasia
(ne-o-PLA-ze-ah) An abnormal and uncontrolled growth of tissue; from prefix neo- meaning “new” and root plasm meaning “formation”
What are Immune Disorders?
These include failures of the immune system, allergies, and autoimmune diseases, in which the body makes antibodies to its own tissues.
What are Metabolic disorders?
Disorders that result from lack of enzymes or other factors needed for cellular functions. Many hereditary disorders fall into this category. Malnutrition caused by inadequate intake of nutrients or inability of the body to absorb and use nutrients also upsets metabolism.
What are Hormonal disorders?
Disorders caused by underproduction or overproduction of hormones or by an inability of the hormones to function properly. One common example is diabetes mellitus.
What are Mental and emotional disorders?
Mental and emotional disorders affect the mind and adaptation of an individual to his or her environment.
Define Etiology
(e-te-OL-o-je) The cause of a disease
Define Sepsis
(SEP-sis) The presence of harmful microorganisms or their toxins in the blood or other tissues; adjective: septic
COMMON INFECTIOUS ORGANISMS:
bacteria (bak-TE-re-ah)
Simple microscopic organisms that are widespread throughout the world, some can produce disease; singular: bacterium (bak-TE-re-um)
COMMON INFECTIOUS ORGANISMS:
cocci (KOK-si)
Round bacteria; may be in clusters (staphylococci), chains (streptococci), and other formations; singular: coccus (KOK-us)
Example of Diseases Caused: pneumonia, rheumatic fever, food poisoning, septicemia, urinary tract infections, gonorrhea
COMMON INFECTIOUS ORGANISMS:
bacilli (bah-SIL-i)
Rod-shaped bacteria; singular: bacillus (ba-SIL-us)
Example of Diseases Caused: typhoid, dysentery, salmonellosis, tuberculosis, botulism, tetanus
COMMON INFECTIOUS ORGANISMS:
vibrios (VIB-re-oze)
Short curved rods
Example of Diseases Caused: cholera, gastroenteritis
COMMON INFECTIOUS ORGANISMS:
spirochetes (SPI-ro-ketze)
Corkscrew-shaped bacteria that move with a twisting motion
Example of Diseases Caused: Lyme disease, syphilis, Vincent disease
COMMON INFECTIOUS ORGANISMS:
chlamydia (klah-MID-e-ah)
Extremely small bacteria with complex life cycles that grow in living cells but, unlike viruses, are susceptible to antibiotics
Example of Diseases Caused: conjunctivitis, trachoma, pelvic inflammatory disease (PID), and other sexually transmitted infections (STIs)
COMMON INFECTIOUS ORGANISMS:
rickettsia (rih-KET-se-ah)
Extremely small bacteria that grow in living cells but are susceptible to antibiotics
Example of Diseases Caused: typhus, Rocky Mountain spotted fever
COMMON INFECTIOUS ORGANISMS:
viruses (VI-rus-es)
Submicroscopic infectious agents that can live and reproduce only within living cells
Example of Diseases Caused: colds, herpes, hepatitis, measles, varicella (chickenpox), influenza, AIDS
COMMON INFECTIOUS ORGANISMS:
fungi (FUN-ji)
Simple, nongreen plants, some of which are parasitic; includes yeasts and molds; singular: fungus (FUN-gus)
Example of Diseases Caused: candidiasis, skin infections (tinea, ringworm), valley fever
COMMON INFECTIOUS ORGANISMS:
protozoa (pro-to-ZO-ah)
Single-celled animals; singular: protozoon (pro-to-ZO-on)
Example of Diseases Caused: dysentery, Trichomonas infection, malaria
COMMON INFECTIOUS ORGANISMS:
helminths (HEL-minths)
Worms
Example of Diseases Caused: trichinosis; infestations with roundworms, pinworms, hookworms
Bacteria can occur in what three shapes?
Round (cocci), Rod-shaped (bacilli), or Curved (including vibrios and spirochetes)
Describe Three Responses to Disease
INFLAMMATION: When cells are injured, they release chemicals that allow blood cells and fluids to move into the tissues.
PHAGOCYTOSIS: Certain white blood cells are capable of engulfing these materials and destroying them internally.
IMMUNITY: All our defenses against infectious disease.
What are the four signs of inflammation?
Heat
Pain
Redness
Swelling
Define Edema
A swelling or accumulation of fluid in the tissues
What is pus?
The remains of phagocytosis (fa-gow-sai-TOW-suhs) consisting of fluid and white blood cells.
Examples of inborn or innate protective mechanisms that are based on a person’s genetic makeup and do not require any previous exposure to a disease organism.
Inflammation, phagocytosis, mechanical barriers (such as intact skin and mucous membranes), as well as body secretions (such as stomach acid and enzymes in saliva and tears).
What is adaptive immunity, or acquired immunity?
Immunity that we develop during life from exposure to disease organisms.
Define neoplasm
NE-o-plazm
A tumor, or abnormal growth, which may be benign or malignant (root onc/o and suffix -oma refer to neoplasms).
A benign neoplasm does not spread, that is, undergo metastasis to other tissues, although it may cause damage at the site where it grows.
An invasive neoplasm that can metastasize to other tissues is termed malignant and is commonly called cancer.
Define carcinoma
kar-sih-NO-mah
A malignant neoplasm composed of epithelial cells (from Greek root carcino, meaning “crab”) (adjective: carcinomatous)
If the tumor arises in glandular epithelium, it is an adenocarcinoma (the root aden/o means “gland”); a cancer of pigmented epithelial cells (melanocytes) is a melanoma.
Define sarcoma
sar-KO-mah
A malignant neoplasm arising from connective tissue (from Greek root sarco, meaning “flesh”); adjective: sarcomatous
Define cyst
sist
A sac or pouch filled with fluid or semisolid material that is abnormal but not cancerous.
Causes of cyst formation include infection or blockage of a duct.
Define Gram stain
A laboratory staining procedure that divides bacteria into two groups: gram positive, which stains purple, and gram negative, which stains red.
Define hernia
HER-ne-ah
Protrusion of an organ through an abnormal opening; commonly called a rupture.
Word Parts Pertaining to Disease:
Alg/o, algi/o, algesi/o
Meaning: Pain
Example: Alglesia
Definition: Condition of having pain
Word Parts Pertaining to Disease:
Carcin/o
Meaning: Cancer, Carcinoma
Example: Carcinoid
Definition: Resembling a carcinoma
Word Parts Pertaining to Disease:
Cyst/o
Meaning: Filled sac or pouch, cyst, bladder
Example: Cystic
Definition: Pertaining to or having cysts
Word Parts Pertaining to Disease:
Lith
Meaning: Calculus, Stone
Example: Lithiasis
Definition: Stone formation
Word Parts Pertaining to Disease:
Onc/o
Meaning: Tumor
Example: Oncogenic
Definition: Causing a tumor
Word Parts Pertaining to Disease:
Path/o
Meaning: Disease
Example: Pathogen
Definition: Organism that produces disease
Word Parts Pertaining to Disease:
Py/o
Meaning: Pus
Example: Pyocyst
Definition: Cyst filled with pus
Word Parts Pertaining to Disease:
Pyr/o, Pyret/o
Meaning: Fever, Fire
Example: Pyrexia
Definition: Fever
Word Parts Pertaining to Disease:
Scler/o
Meaning: Hard
Example: Sclerosis
Definition: Hardening of tissue
Word Parts Pertaining to Disease:
Tox/o, Toxic/o
Meaning: Poison
Example: Endotoxin
Definition: Toxin within bacterial cells
Prefixes for Disease:
Brady-
Meaning: Slow
Example: Bradypnea (brad-ip-NE-ah)
Definition: Slow breathing (-pnea) rate
Prefixes for Disease:
Dys-
Meaning: Abnormal, Painful, Difficult
Example: Dysplasia (dis-PLA-je-ah)
Definition: Abnormal development (plas) of tissue.
Prefixes for Disease:
Mal-
Meaning: Bad, Poor
Example: Malabsorption
Definition: Poor absorption of nutrients
Prefixes for Disease:
Pachy-
Meaning: Thick
Example: Pachycephaly
Definition: Abnormal thickness of the skull
Prefixes for Disease:
Tachy-
Meaning: Rapid
Example: Tachycardia
Definition: Rapid heart (cardi/o) rate
Prefixes for Disease:
Xero-
Meaning: Dry
Example: Xeroderma (ze-ro-DER-mah)
Definition: Dryness of the skin
Suffixes for Disease:
-Algia, Algesia
Meaning: Pain
Example: Neuralgia
Definition: Pain in a nerve (neur/o)
Suffixes for Disease:
-Cele
Meaning: Hernia, Localized dilation
Example: Gastrocele
Definition: Hernia of the stomach (gastr/o)
Suffixes for Disease:
-Clasis, Clasia
Meaning: Breaking
Example: Karyoclasis
Definition: Breaking of the nucleus (kary/o)
Suffixes for Disease:
-Itis
Meaning: Inflammation
Example: Cystitis
Definition: Inflammation of the urinary bladder (cyst/o)
Suffixes for Disease:
-Megaly
Meaning: Enlargement
Example: Hepatomegaly
Definition: Enlargement of the liver
Suffixes for Disease:
-Odynia
Meaning: Pain
Example: Urodynia
Definition: Pain on urination (ur/o)
Suffixes for Disease:
-Oma
Meaning: Tumor
Example: Lipoma
Definition: Tumor of fat cells
Suffixes for Disease:
-Pathy
Meaning: Any disease of
Example: Nephropathy
Definition: Any disease of the kidney (nephr/o)
Suffixes for Disease:
-Rhage, Rhagia
Meaning: Bursting forth, Profuse flow
Example: Hemorrhage
Definition: Profuse flow of blood
Suffixes for Disease:
-Rhea
Meaning: Flow, Discharge
Example: Pyorrhea
Definition: Discharge of pus
Suffixes for Disease:
-Rhexis
Meaning: Rupture
Example: Amniorrhexis
Definition: Rupture of the amniotic sac
Suffixes for Disease:
-Schisis
Meaning: Fissure, Splitting
Example: Retinoschisis
Definition: Splitting of the retina of the eye
Words for Disease Use as Suffixes:
Dilation, Dilatation
Meaning: Expansion, Widening
Example: Vasodilation
Definition: Widening of blood vessels (vas/o)
Words for Disease Use as Suffixes:
Ectasia, Extasis
Meaning: Dilation, Dilatation, Distension
Example: Gastectasia
Definition: Dilation of the stomach (gastr/o)
Words for Disease Use as Suffixes:
-Edema
Meaning: Accumulation of fluid, Swelling
Example: Cephaledema
Definition: Swelling of the head
Words for Disease Use as Suffixes:
Lysis
Meaning: Separation, Loosening, Dissolving, Destruction
Example: Dialysis
Definition: Separation of substances by passage through (dia-) a membrane
Words for Disease Use as Suffixes:
Malacia
Meaning: Softening
Example: Craniomalacia
Definition: Softening of the skull
Words for Disease Use as Suffixes:
Necrosis
Meaning: Death of tissue
Example: Osteonecrosis
Definition: Death of bone (oste/o) tissue
Words for Disease Use as Suffixes:
Ptosis
Meaning: Dropping, Downward displacement, Prolapse
Example: Blepharoptosis
Definition: Dropping or drooping of the eyelid (blephar/o)
Words for Disease Use as Suffixes:
Sclerosis
Meaning: Hardening
Example: Phlebosclerosis
Definition: Hardening of veins (phleb/o)
Words for Disease Use as Suffixes:
Splasm
Meaning: Sudden contraction, Cramp
Example: Arteriospasm
Definition: Spasm of an artery
Words for Disease Use as Suffixes:
Stasis
Meaning: Suppression, Stoppage
Example: Menostasis
Definition: Suppression of menstrual (men/o) flow
Words for Disease Use as Suffixes:
Stenosis
Meaning: Narrowing, Constriction
Example: Bronchostenosis
Definition: Narrowing of a bronchus (air passageway)
Words for Disease Use as Suffixes:
Toxin
Meaning: Poison
Example: Nephrotoxin
Definition: Substance poisonous or harmful for the kidneys
Prefixes for Infectious Diseases:
Staphylo-
Meaning: Grape-like cluster
Example: Staphylococcus
Definition: A round bacterium that forms clusters
Prefixes for Infectious Diseases:
Strepto-
Meaning: Chain
Example: Streptobacillus
Definition: A rod-shaped bacterium that forms chains.
Roots for Infectious Diseases:
Bacill/i, Bacill/o
Meaning: Bacillus
Example: Bacilluria
Definition: Bacilli in the urine (-uria)
Roots for Infectious Diseases:
Bacteri/o
Meaning: Bacterium
Example: Bacteriostatic
Definition: Stopping (stasis) the growth of bacteria.
Roots for Infectious Diseases:
Myc/o
Meaning: Fungus, Mold
Example: Mycotic
Definition: Pertaining to a fungus
Roots for Infectious Diseases:
Vir/o
Meaning: Virus
Example: Viremia
Definition: Presence of viruses in the blood (-emia)
Enrichment Terms for Disease:
acid-fast stain
A laboratory staining procedure used mainly to identify the tuberculosis (TB) organism.
Enrichment Terms for Disease:
communicable (ko-MUN-ih-kah-bl)
Capable of passing from one person to another, such as an infectious disease.
Enrichment Terms for Disease:
endemic (en-DEM-ik)
Occurring at a low level but continuously in a given region, such as the common cold (from en-, meaning “in” and Greek demos, meaning “people”).
Enrichment Terms for Disease:
epidemic (ep-ih-DEM-ik)
Affecting many people in a given region at the same time, a disease that breaks out in a large proportion of a population at a given time.
Enrichment Terms for Disease:
Exacerbation (eks-zas-er-BA-shun)
Worsening of disease, increase in severity of a disease or its symptoms.
Enrichment Terms for Disease:
iatrogenic (i-at-ro-JEN-ik)
Caused by the effects of treatment (from Greek root iatro-, meaning “physician”).
Enrichment Terms for Disease:
idiopathic (id-e-o-PATH-ik)
Having no known cause (root idio means “self-originating”).
Enrichment Terms for Disease:
in situ (in SI-tu)
Localized, noninvasive (literally “in position”); said of tumors that do not spread, such as carcinoma in situ (CIS).
Enrichment Terms for Disease:
normal flora (FLO-rah)
The microorganisms that normally live on or in the body and are generally harmless and often beneficial but can cause disease under special circumstances, such as injury or failure of the immune system.
Enrichment Terms for Disease:
nosocomial (nos-o-KO-me-al)
Describing an infection acquired in a hospital (root nos/o means “disease,” and comial refers to a hospital), which can be a serious problem, especially if it is resistant to antibiotics, such as strains of methicillin-resistant Staphylococcus aureus (MRSA) and vancomycin-resistant S. aureus (VRSA).
Enrichment Terms for Disease:
opportunistic (op-por-tu-NIS-tik)
Describing an infection that occurs because of a host’s poor or altered condition.
Enrichment Terms for Disease:
pandemic (pan-DEM-ik)
Describing a disease that is prevalent throughout an entire region or the world; for example, AIDS is pandemic in certain regions of the world.
Enrichment Terms for Disease:
remission (re-MISH-un)
A lessening of disease symptoms, the period during which such lessening occurs.
Enrichment Terms for Disease:
septicemia (sep-tih-SE-me-ah)
Presence of pathogenic bacteria in the blood, blood poisoning.
Enrichment Terms for Disease:
systemic (sis-TEM-ik)
Pertaining to the whole body.