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49 Cards in this Set
- Front
- Back
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Although primary tumors of the heart are rare, what is the most common primary tumor of the heart in adults and is primarily located in the left atrium?
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Myxoma
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B cell proliferation for the secondary humoral immune response takes place in?
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Germinal centers of the lymph nodes and of the spleen
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Which of the following usually gains entry by inhalation of spores where it then invades the walls of blood vessels leading to necrosis, thrombosis and infarction in the lumen and is characteristic for broad nonseptate hyphae?
a) Blastomyces dermatidis b) Coccidioides immitis c) Sporothrix schenckii d) Rhizopus spp. e) Histoplasma capsulatum |
Rhizopus spp.
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The only acceptable plastic that can be used for steam sterilization or autoclave is?
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Polypropylene
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The induction of B-cells switching to IgE is stimulated by?
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IL-4
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Mutations, often inflicted by exposure to mutagens, viruses, or radiation, involve aberrant changes made to the genetic material that may affect the structure and function of its coded protein product. If a mutation alters a codon which encodes for an amino acid to a stop codon, then this modification would be considered a?
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Nonsense mutation
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Which of the following is the only double stranded RNA virus?
a) Retrovirus b) Togavirus c) Orthomyxovirus d) Reovirus e) Rhabdovirus |
Reovirus
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Which antibiotics block the transfer of peptidoglycan subunits to the existing cell wall peptidoglycan?
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Bacitracin
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A bright field microscope is regularly used for cytological tests. When using bright field microscope, the resolution is dependent on the?
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Numerical aperture and Wave length of the light
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Where does respiration take place in bacteria?
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Cytoplasmic membrane
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A patient has recently undergone renal allograft transplantation. He complains that he urinates less frequently, his blood pressure has increased and that serum creatinine concentration has increased since his transplantation. Which of the following are responsible for these clinical manifestations?
a) T lymphocytes b) Basophils c) NK cells d) B lymphocytes e) Preformed antibodies |
T lymphocytes
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Which of the following is a cytokine that is capable of decreasing inflammation?
a) IL-1 b) IL-6 c) IL-8 d) TGF-Beta e) TNF |
Transforming Growth Factor Beta
TGF-Beta |
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Which of the following bacteria can form endospores?
a) Clostridium and Staphylococcus b) Clostridium and Bacillus c) Mycoplasma and Bordetella d) Streptococcus and Mycoplasma e) Mycoplasma and Bacillus |
Clostridium and Bacillus
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Each of the following is a killed vaccine Except one.
a) Salk polio vaccine b) Hepatitis B vaccine c) Yellow fever vaccine d) Thyphod vaccine e) Cholera vaccine |
Yellow fever vaccine
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What molecule is necessary to present antigen to T helper cell?
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MHC-class II
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Negri bodies is diagnostic of?
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Rabies
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Alpha hemolytic streptococci is the major cause of?
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Infective endocarditis
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Which chromosomal abnormality is a cystic hygroma Most commonly associated with?
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Turner's Syndrome
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What makes a microscope a compound microscope?
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It magnifies in two steps
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Which of the following events occurs only in apoptosis and NOT necrosis?
a) Presence of Eosinophils b) Peripheral aggregation of chromatin c) Inflammation d) Disaggregation of poly ribosomes e) Karyolysis |
Peripheral aggregation of chromatin
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Your patient has swelling of the parotid glands. Which virus would show this clinical manifestation?
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Mumps virus
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Which of the following can NOT cause a congenital infecton?
a) Treponema pallidum b) Toxoplasma gondii c) Mumps d) Cytomegalovirus e) Rubella virus |
Mumps
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Which of the following is NOT a serious sequelae of an acute myocardial infarction?
a) Mitral valve dysfunction b) Cardiac rupture c) Ventricular aneurysm d) Pericarditis e) Mural thrombosis with embolus |
Pericarditis
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Rheumatic arthritis and Glomerular Nephritis are examples of what type of hypersensitivity reactions?
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Type III
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Which one of the following toxins is encoded on a plasmid?
a) Tetanus toxin b) Shiga-like toxin c) TSST-1 d) Cholera toxin e) Pertussis toxin |
Tetanus toxin
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Syphilis, leprosy, trachoma, and tuberculosis are several human infections that reside in human tissues for long periods of time thus provoking a long drawn out battle between the microorganisms and the defenses of the host. This is called microbial?
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Persistence
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Which of the following conditions will NOT cause the formation of an aneurysm?
a) Syphilis b) Atherosclerosis c) Thromboangitis obliterans d) Kawasaki's disease e) Polyarteritis Nodosa |
Thromboangitis obliterans
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T/F
The presence of Koplik spots is an indication of a person infected with mumps. Koplik spots are small irregular red, white, and blue colored spots seen in the oral caity opposite to the maxillary molars? |
The first statement is False, the second is True
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Each of the following are correct statements about Escerichia coli and Pseudomonas aeruginosa Except one.
a) Escheria coli can ferment lactose while Pseudomonas aeruginosa cannot b) Pseudomonas aeruginosa has pertrichous flagella while Escherichia coli has polar flagella c) Pseudomonas aeruginosa produces exotoxin A while Escherichia coli does not d) Pseudomonas aeruginosa can synthesize pyocyanin while Escherichia coli cannot e) Both Pseudomonas aeruginosa and Escherichia coli have cytochromes in their electron transport chains |
Pseudomonas aeruginosa has pertrichous flagella while Escherichia coli has polar flagella
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What is the genetic cause for the most common lysosomal storage disease causing mental retardation?
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Tay-Sachs disease
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The relative percent 3-year survival from common neoplasms is the highest for?
a) Ovary b) Breast c) Thyroid d) Pancreas e) Colon |
Thyroid
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American Burkitt's lymphoma is?
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Isolated jaw involvement is more common in African than American Burkitt's lymphoma
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Aphthous ulcers typically do NOT occur in the
a) buccal mucosa b) gingiva c) soft palate d) lateral border of the tongue e) floor of mouth |
Gingiva
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Large numbers of inflammatory cells such as lymphocytes are found in the loose connective tissue of the?
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GI tract and Respiratory system
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Collagen synthesis as measured by prolyl hydroxylase activity is?
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Significantly higher in keloids
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A patient contracts polio and is prescribed a polio vaccine to decrease the polio infection. The difference of the Sabin polio vaccine compared to the Salk polio vaccine is?
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Sabin polio vaccine induces cytotoxic T cells whereas Salk polio vaccine does not
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Which of the following can NOT cause chronic lymphadenitis?
a) Dilantin (diphenylhydantoin) b) HIV infection c) Rheumatoid arthritis d) Rubeola e) Syphilis |
Rubeola
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The mode of action of diphtheria toxin is through?
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Inactivation of elongation factor-2
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What describes viruses?
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Viruses are obligate intracellular parasites
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The patient presents with severe epigastric pain radiating to his back. He also claims he is a heavy alcohol drinker. The most likely diagnosis of the patient is?
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Acute pancreatits
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The dentist speculates that the patient presents with Sjogrens syndrome. What type of tumors arise from the onset of Sjogren's syndrome, Hashimoto's thyroiditis, or Helicobacter pylori infection of the stomach?
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Mucosa-associated lymphoid tissue (MALT Lymphoma)
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Parkinson's disease is the result of neuronal deficiency in the?
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Substatia Nigra
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The patient is taking medications such as Fosamax to help reverse bone loss. Serum alkaline phosphatase levels are elevated in each of the following conditions Except one.
a) Osteitis fibrosa cystica b) Osteoporosis c) Rickets d) Osteosarcoma e) Pagets disease of the bone |
Osteoporosis
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If the influenza A virus isolated in 2007 is H3N2 and those isolated in 2006 are also H3N2 but slightly different from 2007 strain, therefore requiring a new viral strain for the 2007 vaccine, this would be an example of?
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Antigenic Drift
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During the medical history, the sexually active patient reports to the dentist that she contracted with a urinary tract infection last month. Which of the following Staphylococci is Most responsible from causing this urinary tract infection?
a) Staphylococcus Saprophyticus b) Staphylococcus Epidermidis c) Staphylococcus Haemolyticus d) Staphylococcus hominis e) Staphylococcus aureus |
Staphylococcus Saprophyticus
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The dentist examine the tongue of the patient and spots oral hairy leukoplakia. The lesions seen in oral hairy leukoplakia are NOT
a) characterized by little or no associated inflammation b) characterized by epithelial dysplasia c) most commonly seen on the lateral borders of the tongue d) typically asymptomatic e) commonly associated with candidal organisms in the parakeratin |
Characterized by epithelial dysplasia
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Because the patient is sexually active and has unprotected sex, the patient believes she might be infected with Hepatitis B. She has not been vaccinated and wishes to take a blood test. Since the patient may be in the window period, clearance of which of the following serological markers indicates the start of the window period and confirms a possible HBV infection?
a) Anti-HBeAg b) HBcAg c) HBsAg d) Anti-HBs e) Anti-HBc |
HBsAg
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The patient also opts to take an HIV test. Which of the following is NOT characteristic of infections caused by HIV?
a) HIV infects monocytes b) CD8 to CD4 is reduced c) GP120 protein on the viral envelope binds to CD4 protein receptor on target cell d) HIV causes functional inactivation and lysis of helper T cells e) HIV can be acquired via sexual contact and blood products |
CD8 to CD4 ratio is reduced
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The patient recently overcame a Salmonella infection from eating raw eggs. However, the patient may be in a carrier state as Salmonella organisms have been known to persist for years in which of the following organisms?
a) Liver b) Spleen c) Pancreas d) Kidney e) Gall bladder |
Gall Bladder
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