Neck Cont. Flashcards
What make up the floor of the lateral cervical region (5)
- Levator Scapulae
- Splenius Capitus
- Posterior scalene
- Middle Scalene
- Omohyoid
This muscle is deep and posterior to the middle scalene and levator scapulae?
Posterior scalene
What 2 muscles does the brachial plexus emerge between?
Anterior and middle scalene
What causes the angle of the omohyoid muscle to change?
-Has an intermediate tendon that changes the angle of the muscle
What are the main arteries of the the lateral cervical region (4)
- Transverse Cervical
- Suprascapular
- Occipital
- Subclavian
What are the main veins of the lateral cervical region (3)
- External jugular
- Subclavian
- Brachiocephalic
Where does the external jugular join the subclavian vein
Right next to where the internal jugular vein joins the subclavian vein (don’t think about this one too much silly)
Does the internal carotid artery have branches?
NOPE CON!
Does the external carotid have branches?
Yes
When is the brachiocephalic vein formed?
-Formed when the internal jugular vein and the subclavian vein meet
What is the brachiocephalic vein also called?
The venous angle (where the lump drainage dumps into)
What side of the brachiocephalic vein is longer and why?
The left side is longer because it has to go to the right side to the superior vena cava
What muscle does the transverse cervical artery supply?
Trapezius
What muscle does the Suprascapular artery supply?
Rotator cuff muscles
What are the main nerves of the lateral cervical region? (4)
- Spinal Accessory
- Roots of the brachial plexus (bc its supraclavicular)
- Suprascapular
- Erbs point nerves
Where does the spinal accessory nerve lie?
On tope of the Levator scapulae- it is the most vulnerable
What muscles are innervated by the spinal accessory nerve?
- SCM
- Trapezius
Are the fibers of the spinal accessory nerve that innervate the trap and the SCM motor or sensory?
Motor
Does damage to the Accessory nerve in the trap damage the SCM muscle? Or vice versa
Nope- they are different branches because the trap is posterior and the SCM is anterior
-to damage both of the muscles you would have to have damage where the Accessory nerve originates
Where does the phrenic nerve lie?
Anterior and superficial to the anterior scalene
What does the phrenic nerve innervate?
The diaphragm
- Both sensory and motor
- Mostly motor
- C3, 4, 5
Describe what the clinical signs would be if you had a rotator cuff injury?
- Erb Dushain Paulsey
- Upper Brachial Plexus injury
- Problem abducting and laterally rotating the arm so your arm will be adducted and medially rotated
- Major impairment is the initial abduction
What are the contents of the cervical plexus (5)
- Lesser occipital n
- Greater auricular n
- Transverse Cervical n
- Supraclavicular n
- Phrenic n
What nerves of the cervical plexus are cutaneous nerves (4)
- Lesser occipital
- Greater auricular
- Transverse cervical
- Supraclavicular