mesoderm or endoderm - 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 02-18-2013
USMLE Forums Addict
 
Steps History: Not yet
Posts: 104
Threads: 51
Thanked 10 Times in 8 Posts
Reputation: 20
Send a message via Skype™ to tarsuc
Default mesoderm or endoderm

where does the following derive from?

wall of urinary bladder, vagina, urethra.

HY embryo says they are from endoderm, while First aid errata says they are from mesoderm.

Damn.

could someone help?
Reply With Quote Quick reply to this message



  #2  
Old 02-18-2013
USMLE Forums Addict
 
Steps History: Not yet
Posts: 135
Threads: 3
Thanked 73 Times in 48 Posts
Reputation: 83
Default

Bladder, urethra, lower 2/3rd of vagina are of endodermal origin, from the urogenital sinus of the embryo.

Uterine tubes, uterus, cervix and upper 1/3rd of vagina are of mesodermal origin, particularly from the paramesonephric (mullerian) ducts of the embryo.

Just remember that the urinary system is pretty much all endodermal in origin. Where as the Reproductive system is mostly mesodermal, except for the last 2/3rd of the vagina which is endodermal.
__________________

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
You can't confuse the confused!
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by slowpoke; 02-18-2013 at 11:06 AM.
Reply With Quote Quick reply to this message
The above post was thanked by:
tarsuc (02-18-2013)
  #3  
Old 02-18-2013
USMLE Forums Addict
 
Steps History: Not yet
Posts: 104
Threads: 51
Thanked 10 Times in 8 Posts
Reputation: 20
Send a message via Skype™ to tarsuc
Default

thanks man!

whats with First aid! crap!
Reply With Quote Quick reply to this message
 
  #4  
Old 1 Week Ago
USMLE Forums Newbie
 
Steps History: ---
Posts: 3
Threads: 1
Thanked 0 Times in 0 Posts
Reputation: 10
Default question ectoderm

Hi, I have a question: is there a part of the genital system that derives from ectoderm?
Reply With Quote Quick reply to this message
  #5  
Old 1 Week Ago
USMLE Forums Newbie
 
Steps History: ---
Posts: 3
Threads: 1
Thanked 0 Times in 0 Posts
Reputation: 10
Default question ectoderm

Quote:
Originally Posted by slowpoke View Post
Bladder, urethra, lower 2/3rd of vagina are of endodermal origin, from the urogenital sinus of the embryo.

Uterine tubes, uterus, cervix and upper 1/3rd of vagina are of mesodermal origin, particularly from the paramesonephric (mullerian) ducts of the embryo.

Just remember that the urinary system is pretty much all endodermal in origin. Where as the Reproductive system is mostly mesodermal, except for the last 2/3rd of the vagina which is endodermal.
Hi, I have a question: is there a part of the genital system that derives from ectoderm?
Reply With Quote Quick reply to this message



Reply

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
Heart Part not from the Mesoderm! ricko335 USMLE Step 1 Forum 5 11-01-2011 07:24 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)