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Movement > Arm > Flashcards

Arm Flashcards

1
Q

What is the deltopectoral triangle and what runs through it?

A

Between deltoid, pectoralis major and clavicle.

Cephalic vein

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2
Q

What is the course of the cephalic vein in the arm?

A

Originates at anatomical snuffbox&raquo_space; ant.lat. surface&raquo_space; deltopectoral triangle&raquo_space; axilla inf to clavicle

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3
Q

What forms the anterior wall of the axilla?

A

pectoralis major and minor, subclavius, calvipectoral fascia

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4
Q

What forms the medial wall of the axilla?

A

Upper thoracic wall, serratus anterior

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5
Q

What forms the posterior wall of the axilla?

A

Subscapularis, teres major, latissimus dorsi, long head of triceps brachii

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6
Q

What forms the lateral wall of the axilla?

A

Intertubercular sulcus

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7
Q

What does the neurovascular bundle to the arm contain?

A

Cords of the brachial plexus
Axillary artery & vein
Lymph nodes

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8
Q

Where does the neurovascular bundle enter the arm?

A

Through the apex of the axilla

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9
Q

Where does the lymph from the breast that drains into the axillary lymph nodes drain to?

A

Mainly anterior pectoral group

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10
Q

Pectoral nodes drain which part of the breast?

A

Lateral breast

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11
Q

Central lymph nodes drain which part of the breast?

A

Tail of the breast

-also collect lymph from other groups

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12
Q

Where is the apical group of lymph nodes and where do they receive lymph from?

A

In the apex of the axilla

-receive lymph from all other nodes

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13
Q

What are the 4 groups of axillary lymph nodes?

A
  • Central
  • Apical
  • Anterior pectoral
  • Posterior pectoral
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14
Q

Where are the parasternal nodes?

A

Anterior to the sternum

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15
Q

Where does pectoralis minor run in relation to the axillary artery?

A

Anterior to the axillary artery

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16
Q

Where does the axillary artery begin and end?

A
  • Lat margin of rib 1 (from subclavian)

- Inf margin of teres major (becomes brachial)

17
Q

Where do the anterior and posterior circumflex humeral arteries arise from the axillary artery and what do they form?

A

Arise inferior to pectoralis minor and form an anastamosis around the surgical neck of the humerus via the quadrilateral space

18
Q

Does the axillary artery lie medial or lateral to the axillary vein?

A

Artery is lateral

19
Q

Where does the axillary vein form?

A

Lower border of teres major

20
Q

What is the name of the deep fascia either side of the humerus?

A

Lateral and medial intermuscular fascia

21
Q

What are the 3 muscles of the anterior/flexor compartment of the arm and what is the common nerve supply to these muscles?

A
  • Biceps brachii
  • Brachialis
  • Coracobrachialis

Innervation; musculocutaneous

22
Q

What artery supplies the anterior compartment of the arm?

A

Brachial artery

-Lies medially then moves laterally&raquo_space; midway between epicondyles

23
Q

What are the attachments of the biceps brachii muscle?

A

Origin: -short head: corocoid process
- long head: supraglenoid tubercle
Insertion: radial tuberosity

24
Q

What are the actions of biceps brachii muscle?

A

Flexor of forearm and supinator

25
Q

What are the attachments of brachialis muscle?

A

Origin: -anterior humerus
Insertion: - ulnar tuberosity

26
Q

What are the actions of brachialis?

A

Flexor of forearm

27
Q

What are the attachments of coracobrachialis?

A

Origin - coracoid process

Insertion - linear roughening on med midshaft humerus

28
Q

What are the actions of coracobrachialis?

A

Flexor of arm

29
Q

What is the one muscle of the posterior compartment of the arm?

A

Triceps brachii?

30
Q

What are the origins of triceps brachii?

A

Long head - infraglenoid tubercle (scapula)
Lat head - post humerus (sup to spiral groove)
Med head - post humerus (inf to spiral groove)

31
Q

What is the common insertion of triceps brachii?

A

Olecranon (ulna)

32
Q

What is the nerve supply to triceps brachii?

A

Radial nerve (C6-8)

33
Q

What is the function of triceps brachii?

A

Extension of forearm at elbow

Long head also extends and adducts arm at shoulder

34
Q

Where does the deltoid tuberosity lie in relation to the spiral groove?

A

Laterally

35
Q

Which 2 structures run in the spiral groove?

A

Radial nerve

Profunda brachii artery

36
Q

Which artery supplies the posterior compartment of the arm?

A

Profunda brachii artery

- Passes through triangular interval, along spiral groove & terminates as 2 collateral vessels at elbow

37
Q

Which muscle crosses teres major?

A

Long head of triceps brachii

38
Q

Which vein runs in the deltopectoral groove?

A

Cephalic vein

39
Q

Which muscle overlies the brachial plexus in the axilla?

A

Pectoralis minor

Movement (12 decks)

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