Lecture 2

Question 0

Where is the deltoid tuberosity?

Answer 0

On the lateral side of the humerus.

Question 1

What is the most commonly dislocated large joint in the body?

Answer 1

The GH joint.

Question 2

Where is the radial groove?

Answer 2

On the posterior humerus.

Question 3

What runs in the radial groove?

Answer 3

The radial nerve and the profunda brachii artery.

Question 4

What happens if you tear your radial nerve due to a humerus fracture?

Answer 4

Wrist drop, lose all active wrist extension, finger extension, and part of the tricep.

Question 5

What are the regions of vertebra?

Answer 5

7 cervical 
12 thoracic 
5 lumbar 
5 fused sacral 
4 fused coccygeal

Question 6

Describe the nuchal ligament

Answer 6

Fibroelastic tissue extending from the external occipital protuberance and posterior border of the foramen magnum to the spinous processes of the cervical vertebrae.

Question 7

How is the trap unique?

Answer 7

It’s the only upper limb muscle that isn’t supplied by a branch of the brachial plexus.

Question 8

Where does the sensation come from for the trap?

Answer 8

The ventral rami not the spinal accessory nerve

Question 9

Where is the inter tubercular groove located?

Answer 9

Anterior surface of the humerus

Question 10

If someone presented with a higher shoulder on one side what would you suspect?

Answer 10

Think trap or spinal accessory nerve. Entrapment of spinal accessory nerve.

Question 11

If you lost your thoracodorsal nerve what would be difficult

Answer 11

You can’t climb or do pull ups and chin ups.

Question 12

What would a person present like if they had weak rhomboids

Answer 12

The scapula would be further away from the midline so muscles with scapula retraction would be weakened.

Question 13

What runs in the deltopectoral triangle?

Answer 13

The deltoid branch of the thoracoacromial trunk and the cephalic vein.

Question 14

What happens if your axillary nerve is injured in a dislocated humoral joint

Answer 14

Wouldn’t be able to achieve full shoulder abduction, because the supraspinatis isn’t a powerful abductor.

Question 15

What muscle is commonly effected in rotator cuff instability

Answer 15

The supraspinatus tendon.

Question 16

____ comes off the thyrocervical trunk. It comes over the superior transverse scapular ligament.

Answer 16

Supra scapular artery

Question 17

_____ comes off the thyrocervical trunk and has two branches. The deep branch becomes the dorsal scapular artery.

Answer 17

Transverse cervical artery

Question 18

The dorsal scapular artery originates from?

Answer 18

The subclavian or the transverse cervical.

Question 19

Where does the spinal accessory nerve originate?

Answer 19

Comes from the spinal nucleus and medulla.

Question 20

Describe the quadrangular space?

Answer 20

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.

Question 21

Describe the triangular space

Answer 21

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.

Question 22

What are the boundaries of the quadrangular space

Answer 22

Superior–teres minor
Inferior– teres major
Lateral–lateral head of triceps brachii
Medial– long head of triceps brachii

Question 23

Boundaries of the triangular space

Answer 23

Superior– teres minor
Inferior– teres major
Lateral– long head of the triceps