cell membrane structure - 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 08-02-2010
USMLE Forums Guru
 
Steps History: ---
Posts: 487
Threads: 69
Thanked 296 Times in 133 Posts
Reputation: 316
Question cell membrane structure

The extracellular matrix and the cytoskeleton communicate across the cell membrane
through which of the following structures?
A. Proteoglycans
B. Integrins
C. Cadherins
D. Intermediate filaments
E. Microtubules
Reply With Quote Quick reply to this message



  #2  
Old 08-02-2010
USMLE Forums Scout
 
Steps History: Not yet
Posts: 51
Threads: 2
Thanked 32 Times in 14 Posts
Reputation: 42
Default

B) integrins???
Reply With Quote Quick reply to this message
  #3  
Old 08-03-2010
USMLE Forums Guru
 
Steps History: ---
Posts: 487
Threads: 69
Thanked 296 Times in 133 Posts
Reputation: 316
Default

yup its integrins...
explanation given by UWORLD...
The integrins are transmembrane heterodimers that act as membrane receptors for extracellular matrix components. The best examples are the fibronectin receptor and the laminin receptor. The receptor structure includes an intracytosolic portion that binds to the actin cytoskeleton through the attachment proteins talin or -actinin. The extracellular portion has specificity for extracellular matrix molecules. The N-cadherins function as transmembrane glycoproteins involved in the formation of parts of the intercellular junctional complexes. Proteoglycans are located on the extracellular surface of the plasma membrane and throughout the extracellular matrix. Cadherins are components of the desmosome and zonula adherens. Microtubules and intermediate filaments are found intracellularly and constitute the cytoskeleton.
Reply With Quote Quick reply to this message



Reply

Tags
Cell-Biology-, 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
Schwann cell Myelination! Kabutar111 USMLE Step 1 Forum 7 02-22-2015 07:27 PM
Which of the following increases membrane fluidity khushboo USMLE Step 1 Forum 5 08-03-2010 05:43 PM
Cell Wall Inhibitors anoop_1198 USMLE Step 1 Forum 1 07-28-2010 07:30 PM
T tubule triad structure! Kabutar111 USMLE Step 1 Forum 4 07-15-2010 05:23 PM
T cell defect anoop_1198 USMLE Step 2 CK Forum 6 05-25-2010 10:49 PM

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)