Busy. Please wait.
or

show password
Forgot Password?

Don't have an account?  Sign up 
or

Username is available taken
show password

why


Make sure to remember your password. If you forget it there is no way for StudyStack to send you a reset link. You would need to create a new account.
We do not share your email address with others. It is only used to allow you to reset your password. For details read our Privacy Policy and Terms of Service.


Already a StudyStack user? Log In

Reset Password
Enter the associated with your account, and we'll email you a link to reset your password.

Remove ads
Don't know
Know
remaining cards
Save
0:01
To flip the current card, click it or press the Spacebar key.  To move the current card to one of the three colored boxes, click on the box.  You may also press the UP ARROW key to move the card to the "Know" box, the DOWN ARROW key to move the card to the "Don't know" box, or the RIGHT ARROW key to move the card to the Remaining box.  You may also click on the card displayed in any of the three boxes to bring that card back to the center.

Pass complete!

"Know" box contains:
Time elapsed:
Retries:
restart all cards




share
Embed Code - If you would like this activity on your web page, copy the script below and paste it into your web page.

  Normal Size     Small Size show me how

UKCD Posterior Trian

learning objectives to posterior triangle

QuestionAnswer
What is the key muscle of the neck? What is it’s innervation? The sternocleidomastoid muscle. CN XI (the spinal accessory n.)
What does the sternocleidomastoid muscle divide the neck into? Two triangles - an anterior and a posterior triangle.
List the boundaries of the posterior triangle. The trapezius posteriorly, the sternocleidomastoid anteriorly, and the clavicle inferiorly.
What structure divides the posterior triangle into two subtriangles? The inferior belly of the omohyoid.
Name these two smaller triangles that the posterior triangle is split into. A large, superior occipital triangle, and a lower, smaller supraclavicular triangle.
List at least one important structure in the lower of these two triangles of the posterior triangle The subclavian artery is found in the lower part of the supraclavicular triangle.
The ventral rami of which two plexuses can be found in the posterior triangle? The brachial and cervical plexuses.
What are the root values (spinal cord levels involved in the formation) of each plexus? Cervical plexus = C1-C4; the brachial plexus = C5-T1.
Which of these two plexuses is purely sensory? The cervical plexus.
Be able to label the muscles that form the floor of the posterior triangle, from inferior to superior. The muscles of the floor (from inferior to superior) are: scalenus anterior, scalenus medius, levator scapulae, splenius capitis, semispinalis capitis.
Between which two muscles is the brachial plexus located? The scalenus anterior and medius.
Where is the scalenus posterior located? It lies posterior to the scalenus medius.
Name the nerve that can be found lying superficial to the scalenus anterior? The phrenic nerve.
Name the nerve superficial to the levator scapulae? CN XI - the (spinal) accessory nerve.
Created by: wiechartm