Apraxia brain lesion - USMLE Forums
USMLE Forums Logo
USMLE Forums         Your Reliable USMLE Online Community     Members     Posts
Home
USMLE Articles
USMLE News
USMLE Polls
USMLE Books
USMLE Apps
Go Back   USMLE Forums > USMLE Step 1 Forum

USMLE Step 1 Forum USMLE Step 1 Discussion Forum: Let's talk about anything related to USMLE Step 1 exam


Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 11-21-2011
USMLE-Syndrome's Avatar
USMLE Forums Master
 
Steps History: ---
Posts: 1,203
Threads: 180
Thanked 1,254 Times in 441 Posts
Reputation: 1268
Neuro Apraxia brain lesion

Apraxia usually results from a lesion of which of the following?

A.Precentral gyrus

B.Postcentral gyrus

C.Premotor cortex

D.Prefrontal cortex

E.Cingulate gyrus
Reply With Quote Quick reply to this message
The above post was thanked by:
Glomerulus (11-23-2011)



  #2  
Old 11-22-2011
Guest
 
Steps History: ---
Posts: 197
Threads: 9
Thanked 98 Times in 64 Posts
Reputation: 108
Default

C. Premotor cortex since that is where motor actions are programmed.
Lesions in the somatosensory association cortex can result in apraxia too.

Sent from my Desire HD using Tapatalk
Reply With Quote Quick reply to this message
  #3  
Old 11-22-2011
USMLE Forums Scout
 
Steps History: 1 + CK
Posts: 99
Threads: 8
Thanked 33 Times in 29 Posts
Reputation: 43
Default

C.Premotor cortex
Reply With Quote Quick reply to this message
 
  #4  
Old 11-23-2011
USMLE-Syndrome's Avatar
USMLE Forums Master
 
Steps History: ---
Posts: 1,203
Threads: 180
Thanked 1,254 Times in 441 Posts
Reputation: 1268
Default

The answer is: C

The premotor areas play an important role in the programming or sequencing of responses that compose complex learned movements. They receive significant inputs for this process from the posterior parietal lobule and, in turn, signal appropriate neurons in the brainstem and spinal cord (both flexors and extensors). Lesions of the postcentral gyrus produce a somatosensory loss. Lesions of the precentral gyrus produce paralysis. Neither lesions of the prefrontal cortex nor those of the cingulate gyrus have been reported to produce apraxia.
Reply With Quote Quick reply to this message
The above post was thanked by:
Glomerulus (11-23-2011)



Reply

Tags
Neuroanatomy-, Step-1-Questions

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the USMLE Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:
Medical School
Choose "---" if you don't want to tell. AMG for US & Canadian medical schools. IMG for all other medical schools.
USMLE Steps History
What steps finished! Example: 1+CK+CS+3 = Passed Step 1, Step 2 CK, Step 2 CS, and Step 3.

Choose "---" if you don't want to tell.

Favorite USMLE Books
What USMLE books you really think are useful. Leave blank if you don't want to tell.
Location
Where you live. Leave blank if you don't want to tell.

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Dementia + Gait Apraxia + Incontinence lee-usmle USMLE Step 1 Classic Clues 3 07-21-2016 09:28 PM
Brain Stem Lesion lee-usmle USMLE Step 1 Forum 9 06-10-2014 04:57 PM
Brain stem lesion with stroke scopusmount USMLE Step 1 Forum 3 11-11-2011 11:46 AM
Amilotropic Lateral Sclerosis: Mixed Lesion or Pure Motor Lesion? patelMD USMLE Step 1 Forum 5 08-16-2011 11:29 AM
Do Fatty Acids Cross the Blood Brain Barrier, if yes then why no Beta Oxidation in the brain? life9 USMLE Step 1 Forum 5 05-12-2011 01:22 AM

RSS Feed
Find Us on Facebook
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.

USMLE® & other trade marks belong to their respective owners, read full disclaimer
USMLE Forums created under Creative Commons 3.0 License. (2009-2014)