NBME#5 block 1....................50Q - maryam2009

[ArchivalUser]

Hi there,yes u r right I wanted to write E but I don't know how it is written A,my mistake,sorry
correction Q6 is EEEEEEEEEEEEEEEEEEEEEEEEE

[ArchivalUser]

9-AA
lower motor neuron disease involves corticospinal tract and ante horn cells.

[ArchivalUser]

10--DD
malingering as pt involved in RTA

HERE LINK FOR GAINS

http://www.naslov.hr/files/forum/2011/1/568779.php

[ArchivalUser]

11.B

Alzheimer's disease is characterised by loss of neurons and synapses in the cerebral cortex and certain subcortical regions. This loss results in gross atrophy of the affected regions, including degeneration in the temporal lobe and parietal lobe, and parts of the frontal cortex and cingulate gyrus.

Both amyloid plaques and neurofibrillary tangles are clearly visible by microscopy in brains of those afflicted by AD

http://upload.wikimedia.org/wikipedia/co..._onset.jpg

http://en.wikipedia.org/wiki/File:COMPAR...E_HIGH.JPG

[ArchivalUser]

12.B

http://radiopaedia.org/images/577188

[ArchivalUser]

13.B

cell-mediated immunity
These CD4+ cells bind to antigen presented by antigen-presenting cells (APCs) like phagocytic macrophages and dendritic cells. The T cells then release lymphokines that attract other cells to the area. The result is inflammation: the accumulation of cells and molecules that attempt to wall off and destroy the antigenic material (an abscess is one example, the rash following exposure to poison ivy is another).

[ArchivalUser]

14.B

premotor cortex is involved in the planning of motor activities
Damage........apraxia,a disruption of the patterning and xecution of learned motor movements.
individual movements r intact and there is no weakness ,but the patient is unable to perform movements in the correct sequence

[ArchivalUser]

15.A

In distinguishing drug-induced thrombocytopenia, the proportion of actual megakaryocytes present should be examined carefully. Numbers are increased in the marrow of patients with immune-mediated or platelet aggregation drug-induced disorders since increased peripheral destruction stimulates marrow to recruit more platelets. However, an increase also is seen after acute hemorrhage, in some forms of chronic myeloid leukemia, and in hypersplenism as the spleen sequesters platelets and bone marrow attempts to keep up with the demand. Decreased numbers of megakaryocytes may suggest bone marrow-suppressing agents or aplastic anemia as the etiology of thrombocytopenia

[ArchivalUser]

16.A

killed vaccine:
Rabis,Influenza,Polio(Stalk),A Hepatitis,

Live viral vaccine:
Mumps
Rotavirus
rubella
Varicella-Zoster
Measles
Adenovirus
Polio(sabin)
small pox
Yellow fever

Component vaccins:
Hepatitis B
HPV

[ArchivalUser]

17.B
precision is
1.the consistancy and reproducibility of a test (reliability)
2.The absence of random variation in test
Random error ----reduced precision a test

Accuracy is the trueness of the test measurments(validity)
Systemic error ---reduced accuracy in a test