Lecture 2 Flashcards
Where is the deltoid tuberosity?
On the lateral side of the humerus.
What is the most commonly dislocated large joint in the body?
The GH joint.
Where is the radial groove?
On the posterior humerus.
What runs in the radial groove?
The radial nerve and the profunda brachii artery.
What happens if you tear your radial nerve due to a humerus fracture?
Wrist drop, lose all active wrist extension, finger extension, and part of the tricep.
What are the regions of vertebra?
7 cervical 12 thoracic 5 lumbar 5 fused sacral 4 fused coccygeal
Describe the nuchal ligament
Fibroelastic tissue extending from the external occipital protuberance and posterior border of the foramen magnum to the spinous processes of the cervical vertebrae.
How is the trap unique?
It’s the only upper limb muscle that isn’t supplied by a branch of the brachial plexus.
Where does the sensation come from for the trap?
The ventral rami not the spinal accessory nerve
Where is the inter tubercular groove located?
Anterior surface of the humerus
If someone presented with a higher shoulder on one side what would you suspect?
Think trap or spinal accessory nerve. Entrapment of spinal accessory nerve.
If you lost your thoracodorsal nerve what would be difficult
You can’t climb or do pull ups and chin ups.
What would a person present like if they had weak rhomboids
The scapula would be further away from the midline so muscles with scapula retraction would be weakened.
What runs in the deltopectoral triangle?
The deltoid branch of the thoracoacromial trunk and the cephalic vein.
What happens if your axillary nerve is injured in a dislocated humoral joint
Wouldn’t be able to achieve full shoulder abduction, because the supraspinatis isn’t a powerful abductor.
What muscle is commonly effected in rotator cuff instability
The supraspinatus tendon.
____ comes off the thyrocervical trunk. It comes over the superior transverse scapular ligament.
Supra scapular artery
_____ comes off the thyrocervical trunk and has two branches. The deep branch becomes the dorsal scapular artery.
Transverse cervical artery
The dorsal scapular artery originates from?
The subclavian or the transverse cervical.
Where does the spinal accessory nerve originate?
Comes from the spinal nucleus and medulla.
Describe the quadrangular space?
Has the posterior circumflex humoral artery and axillary nerve. The profunda brachii can also be seen here. It is formed by the teres minor and major superiority and inferiority and the long head of the triceps medially and laterally.
Describe the triangular space
Teres minor and major are the superior and inferior borders. The long head of the triceps brachii is the base. You can see the circumflex scapular artery within it.
What are the boundaries of the quadrangular space
Superior–teres minor
Inferior– teres major
Lateral–lateral head of triceps brachii
Medial– long head of triceps brachii
Boundaries of the triangular space
Superior– teres minor
Inferior– teres major
Lateral– long head of the triceps
