Exam (elaborations)
Triangles of the Neck New Exam With Complete Solutions
- Course
- Institution
Triangles of the Neck New Exam With Complete Solutions...
[Show more]
Content preview
Triangles of the Neck New Exam WithComplete Solutions
What are the boundaries of the posterior cervical triangle? - ANSWER - Anterior:
sternocleidomastoid
- Posterior: trapezius
- Base: clavicle
Sternocleidomastoid - ANSWER
Sternocleidomastoid origin - ANSWER 1. Mastoid process of temporal bone
2. Superior nuchal line
Sternocleidomastoid insertion - ANSWER - Sternal head: manubrium
- Clavicular head: medial clavicle
Sternocleidomastoid innervation - ANSWER 1. Spinal accessory nerve, CN XII (motor?)
2. Ventral rami C2, C3 (sensory?)
*Similar to trapezius
Sternocleidomastoid action - ANSWER Bilateral:
Extension of atlanto-occipital (AO) joint Flexion of cervical spine (pulls head forward)
Unilateral Lateral flexion of head/neck to opposite side Rotation of head to opposite side
Which of the following arteries and veins course through the posterior cervical triangle?
1. External jugular vein 2. Subclavian vein 3. Suprascapular artery 4. Transverse
cervical artery 5. Subclavian artery 6. Occipital artery
,Where is the external jugular and subclavian veins in the posterior cervical triangle? -
ANSWER Seen in the anterior/inferior part of the posterior triangle
Where does the external jugular vein drain and where does it go to? - ANSWER External
jugular vein drains scalp and side of face into subclavian vein
- Ultimately to right heart
Where, in the posterior cervical triangle, are the suprascapular and transverse cervical
arteries? - ANSWER They cross the lower part of the triangle
Where is the origin of the suprascapular and transverse cervical arteries? - ANSWER
Thyrocervical trunk
Which of the branches of the thyrocervical trunk is NOT in the posterior cervical
triangle? - ANSWER Inferior thyroid artery
Where, in the posterior cervical trunk, is the subclavian artery? - ANSWER Lower
posterior triangle
Where is the occipital artery in the posterior cervical trunk? - ANSWER Sometimes seen
at the very top of the posterior triangle
*Most likely won't see in lab
Where does the occipital artery supply blood to? - ANSWER Posterior scalp
What does the occipital artery run with? - ANSWER Greater occipital nerve
What are the nerves of the posterior cervical triangle? - ANSWER 1. Spinal accessory
nerve (CN XI)
2. Brachial plexus
, 3. Cervical plexus
Where does the spinal accessory nerve (CN XI) enter the posterior cervical triangle? -
ANSWER It enters the posterior triangle at the posterior border of SCM about half way
down at the nerve point of the neck
What is the course of the spinal accessory nerve superficial to? - ANSWER Levator
scapulae
Where does the brachial plexus run in the posterior cervical triangle? - ANSWER
Brachial plexus (C5-T1) trunks run through the posterior triangle between the anterior
and middle scalene muscles-scalene triangle
What ventral rami form the cervical plexus? - ANSWER C1-C4
What does each rami of the cervical plexus divide into? - ANSWER A superior and
inferior part
What does each rami of the cervical plexus attach to? - ANSWER The rami above and
below to form loops
What is the main loop of the cervical plexus? - ANSWER Ansa cervicalis
What is the superior root of ansa cervicalis? - ANSWER C1
What is the inferior root of ansa cervicalis? - ANSWER C2/C3
What does ansa cervicalis innervate? - ANSWER (Most of the) infrahyoid muscles:
- Omohyoid
- Sternothyroid
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Chrisyuis. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $13.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
75759 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now