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Flashcards in MSK Nuggets Deck (167)
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1

What are the trunks of the brachial plexus?

Superior

Middle

Inferior

2

What are the cords of the brachial plexus?

Lateral

Posterior

Medial

3

What important nerve is formed by the lateral cord?

Musculocutaneous

 

Others include:

Lateral pectoral

Lateral root of median nerve

4

What important nerves are formed by the posterior cord?

Axillary

Radial

 

(others include thoracodorsal nerve, upper and lower subscapular nerve

5

What important nerve is formed by the medial cord?

Ulnar nerve

 

Others include: Medial pectoral, median root of median nerve, median curaneous nerve of arm, median cutaneous nerve of forearm

6

What nerve is formed by the combination of the lateral and medial cords?

Median nerve

7

At what anotomical landpoint does the axillary artery begin?

The lateral border of the first rib

8

When does the axillary artery become the brachial artery?

Lower border of teres major

9

What trunk is affected in erbs palsy?

Upper trunk

10

What are the features of erbs palsy?

Waiter's tip appearance

Nerves affected = musculocutaneous, radial and axillary

 

Musculocuteneous = affects biceps, brachialis and coracobrachialis

Brachoradialis (radial nerve)

Deltoid through axillary nerve

11

What is damage to the lower trunk called?

Klumpkes palsy

12

What are the features of klumpkes palsy?

Muscles affected = intrinsic muscles of the hand and ulnar felxors of the wrist and fingers

 

Cause of injury = undue abduntion of the arm

13

What are the branches of the brachial artery?

Superior ulnar collateral artery

Radial artery (this then gives of the ulnar artery)

Deep brachial

14

Which veins arise from the dorsal venous arch?

Basilic cephalic

15

Where does the median cubital vein allow shunting or blood?

Allows the shunting of blood from the cephalic vein to the basillic vein

16

What are the 5 groups of axillary lymph nodes?

Anterior

Posterior

Apical

Central

Lateral

17

To which group of lymph nodes do the following conditions spread?

Infection on the little finger = axillary

Boil in the scapular region = axillary

Medial part of the breast = internal thoracic

Lateral part of the breast = axillary

Infection around the umbilicus = Parasternal lymph nodes drain deep structures of the anterior abdominal wall above the level of the umbilicus. Below the level of umbilicus is supplie by the superficial inguinal nodes.

18

What is the function of the conoid ligament?

It binds the clavicle to the coracoid process of the scapula

19

Where is the clavicle most likely to break?

The junction between the medial two thirds and the lateral third.

20

Which muscles are responsible for elevation of the scapula?

Upper fibres of trapezius

Levator scapulae

Rhomboids

21

What are the muscles responsible for depression of the scapula?

Latissimus dorsi

Gravity

22

What muscles are resonsible for protraction of the scapula?

Serratus anterior

Pectoralis major

23

Which muscles are responsible for retraction of the scapula?

Trapezius (middle fibres)

Rhomboids

 

24

Which muscles are repsonsible for lateral rotation?

Serratus anterior

Upper fibres of trapezius

Lower fibres of trapezius

25

What muscles are responsible for medial rotation: depressing the glenoid cavity

Gravity

Levator scapulae and the rhomboids

26

What is this ligament?

Trapezoid ligament

27

What is this ligament?

Acromioclavicular

28

What is this ligament?

Transverse humeral ligament

29

What is this ligament?

Coracohumeral ligament

30

What is this ligament?

Conoid ligament