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Winter Anatomy Quiz 3 > Axilla/Brachial Plexus > Flashcards

Axilla/Brachial Plexus Flashcards

(67 cards)

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1
Q

What MUST be reflected in order to access the Axilla?

A

Pec major

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2
Q

What 4 structures are part of the posterior border of the Axilla?

A

Lat dorsi
Teres major
Long head of triceps
Subscapularis

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3
Q

What 2 structures form the medial border of the Axilla?

A

Lateral thoracic wall

Serratus anterior

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4
Q

What forms the lateral border of the Axilla?

A

Intertubercular groove of humerus

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5
Q

What 2 structures form the apex of the Axilla?

A

Clavicle

First rib

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6
Q

What 4 structures pass through the Axilla?

A

Axillary artery
Brachial plexus
Axillary vein
Lymphatics

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7
Q

What is contained within the Axillary sheath?

A

Axillary artery
Brachial plexus
Axillary vein

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8
Q

The Axillary sheath is an extension of what?

A

Pre vertebral fascia

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9
Q

Where is the injection site for an anesthetic block for the brachial plexus?

A

Axillary sheath

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10
Q

The Lymphatics in the axilla drain what 3 general regions?

A

Upper extremity
Breast
Upper abdominal wall

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11
Q

Go over artery tree!!!

A

Know branches of Axillary artery

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12
Q

The Axillary artery is divided into how many parts?

A

3

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13
Q

How many branches does the 1st part of the Axillary artery have? They are?

A

1- superior thoracic

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14
Q

How many branches does the 2nd part of the Axillary artery have? They are?

A

2- thoracoacromial, lateral thoracic

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15
Q

How many branches does the 3rd part of the Axillary artery have? They are?

A

3- Subscapular, anterior circumflex humeral, posterior circumflex humeral

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16
Q

The Subscapular artery has how many divisions? They are?

A

2- thoracodorsal, circumflex scapular

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17
Q

The subclavian passes ____________ to the first rib.

A

Superior

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18
Q

What is the orientation of the subclavian to the anterior and middle scalenes?

A

Posterior to anterior

Anterior to middle

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19
Q

The Axillary artery travels _________ to the 1st rib.

A

Lateral

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20
Q

Which is more superficial, the Axillary artery or vein?

A

Vein

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21
Q

Explain the relationship of the parts of the Axillary artery to the pectoralis minor.

A

1st part- proximal
2nd part- posterior
3rd part- distal

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22
Q

The brachial artery lies at the ___________ border of what muscle?

A

Inferior, teres major

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23
Q

Which 2 veins drain into the Axillary vein?

A

Brachial and basilic

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24
Q

The Axillary vein lies ____________ to the Axillary artery.

A

Anteromedial

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25
The ___________ vein drains into the Axillary vein where?
Cephalic | Lateral to 1st rib
26
The subclavian vein lies where?
Lateral border of 1st rib
27
The brachial plexus is made of ________ of which roots?
Ventral rami | C5-T1
28
True or False. The brachial plexus provides ALL the innervation to the arm.
True
29
How many roots to the brachial plexus are there? They are?
5- C5, C6, C7, C8, T1
30
How many trunks are in the brachial plexus? They are?
3- superior, middle, inferior
31
How many divisions of the brachial plexus are there? They are?
6- 3 anterior and 3 posterior
32
How many cords are in the brachial plexus? They are?
3- lateral, posterior, medial
33
How many branches are in the brachial plexus? They are?
5- musculocutaneous, Axillary, radial, median, ulnar
34
Which 2 nerves branch from the C5 root?
Dorsal scapular | Phrenic
35
Which 2 nerves branch from the superior trunk?
Suprascapular | Subclavius
36
Which roots does the musculocutaneous come from?
C5 C6 C7
37
Which roots does the Axillary nerve come from?
C5 | C6
38
Which roots does the radial nerve come from?
C5-T1
39
Which roots does the median nerve come from?
C5-T1
40
Which roots does the ulnar nerve come from?
C7 C8 T1
41
What does the musculocutaneous nerve innervate?
3 muscles of anterior arm
42
What 2 muscles does the Axillary nerve innervate?
Deltoid | Teres minor
43
What 3 regions does the radial nerve innervate?
Posterior arm Posterior forearm Hand (indirectly)
44
What 2 regions does the median nerve innervate?
Anterior forearm | Hand
45
What 2 regions does the ulnar nerve innervate?
1.5 anterior forearm | Hand
46
How many branches are there off the lateral cord? They are?
3- lateral pectoral, musculocutaneous, lateral root of median
47
How many branches are there from the medial cord? They are?
5- medial pectoral, medial brachial cutaneous, medial ante brachial cutaneous, ulnar, medial root of median
48
How many branches are there off the posterior cord? They are?
5- upper Subscapular, thoracodorsal, lower Subscapular, radial, Axillary
49
Which 4 nerves LEAVE the brachial plexus before the divisions?
Long thoracic Dorsal scapular Supra scapular Subclavius
50
What innervates the serratus anterior?
Long thoracic
51
What innervates the rhomboids and levator scapulae?
Dorsal scapular
52
What innervates the supraspinatus? Infraspinatus?
Supra scapular
53
What innervates ONLY the pec major?
Lateral pectoral
54
What innervates BOTH the pec major and pec minor?
Medial pectoral
55
Which dermatome marks the thumb?
C6
56
Which dermatome marks the 2nd and 3rd fingers?
C7
57
Which dermatome marks the 4th and 5th fingers?
C8
58
Most of the Lymphatics drain to the thoracic duct except which 3 regions? Where do they drain?
Right head Right thorax Right upper extremity Right lymphatic duct
59
What is the anterior border of the Axilla?
Pec major and minor
60
What innervates all 3 anterior muscles of the arm?
Musculocutaneous
61
What innervates the 1 muscle in the posterior arm?
Radial
62
Which 2 nerves do NOT innervate anything in the arm?
Median | Ulnar
63
Which nerve innervates NO intrinsic muscles of the hand?
Radial
64
Which nerve innervates ALL the extensor muscles of the elbow and wrist and MP joints?
Radial
65
Which nerve innervates the brachioradialis muscle?
Radial
66
All muscles in the flexor/anterior compartment of the forearm EXCEPT 1.5 muscles are innervated by what?
Median
67
Which 1.5 muscles are innervated by the ulnar nerve?
Flexor carps ulnaris | Ulnar/medial half of flexor digitorum profundus

Winter Anatomy Quiz 3 (3 decks)

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