M1 > brachial plexus lecture > Flashcards

brachial plexus lecture Flashcards

(53 cards)

Study These Flashcards
1
Q

Damage to AC joint leads to

A

downwards dislocation of shoulder

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2
Q

musculoocutaneous nerve is made of C_

A

C5,6,7

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3
Q

axillary nerve is made of C__

A

C5,6

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4
Q

Radial nerve is made of C __

A

C5, 6, 7, 8, T1

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5
Q

Median nerve is made of C_

A

C5, 6, 7, 8, T1

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6
Q

Ulnar nerve is made of C_

A

C8, T1

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7
Q

Brachial plexus trunks can be found

A

within scalene triangle

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8
Q

Brachial plexus divisions can be found

A

behind clavicle, superior to axillary

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9
Q

Brachial plexus cords can be found

A

behind pectoralis minor

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10
Q

Erb’s point is located

A

at start of superior trunk formation

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11
Q

The branches coming off the posterior cord are

A

axillary
radial

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12
Q

The branches of the anterior cords are

A

musculocutaneous
median
ulnar

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13
Q

Contents of scalene triangle

A

brachial plexus trunks
subclavian artery

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14
Q

contents of costoclavicular space

A

brachial plexus
subclavian artery
subclavian vein

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15
Q

contents of pectoralis minor space

A

brachial cords
axillary artery
axillary vein

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16
Q

The musculocutaneous nerve innervates what muscles?

A

bicep
coracobrachialis
brachialis

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17
Q

The musculocutaneous nerve innervates what area of skin?

A

lateral forearm

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18
Q

Axillary nerve innervates what muscles

A

teres minor
deltoid

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19
Q

axillary nerve innervates what area of skin?

A

superior lateral arm

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20
Q

Radial nerve innervates what muscles on the arm/forearm?

A

posterior compartment muscles:
anconeus
brachioradialis
triceps (long, lateral, medial)
forearm extensors

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21
Q

Radial nerve innervates what area of skin

A

inferior lateral arm

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22
Q

Median nerve innervates what muscles

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A

LOAF (hand):
- lumbricals
- flexor pollicis brevis
- opponens pollicis
- abductor pollicis brevis
and forearm flexors EXCEPT FCU and 1/2 of FDP

23
Q

median nerve innervates what area of skin

Study These Flashcards
A

radial half of palm

24
Q

Ulnar nerve innervates what muscles

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A

-FCU
-FDP (1/2)
- intrinsic muscles of hand (except LOAF)
-Adductor pollicis (only pollicis muscle innervated by ulnar)

25
in general terms, MSC nerve innervates
muscles of anterior arm
26
in general terms, median nerve innervates
anterior compartment of forearm
27
in general terms, ulnar nerve innervates
most of intrinsic hand muscles
28
Erb's palsy produces injuries to what ventral rami
C5-C6
29
What branches are lost from Erbs palsy?
Musculocutaneous nerve suprascapular nerve axillary nerve some radial nerve
30
main symptom of Erb's palsy
waiter's tip hand biceps paralysis (MSC)
31
damage to suprascapular nerve limits
first 15 degrees of abduction (supraspinatus function)
32
damage to axillary nerve limits
majority of arm abduction (deltoid function)
33
Klumpke palsy typically caused by
catching yourself when falling
34
Is klumpke palsy a lower or upper brachial plexus injury
lower
35
What nerves are damaged with Klumpke palsy
Ulnar nerve partial radial partial median
36
Anterior boundary of axilla
pec major and pec minor
37
medial boundary of axilla
serratus anterior
38
lateral boundary of axilla
humerus
39
posterior boundary of axilla
teres major latissimus dorsi
40
Contents of the axillary sheath
brachial plexus axillary artery axillary vein
41
axillary sheath is an extension of what fascia of the neck?
prevertebral fascia
42
What 3 muscles attach to coracoid process?
pec minor coracobrachialis short head of biceps
43
The branches arising from the Roots of the brachial plexus innervate
longus colli and scalene muscles (C5-8)
44
The long thoracic nerve arises from
roots C5, 6, 7
45
the subclavian nerve arises from
superior trunk of brachial plexus
46
the suprascapular nerve arises from
superior trunk of brachial plexus
47
the lateral pectoral nerve arises from
lateral and posterior cords of brachial plexus
48
the upper and lower subscapular nerves arise from
the posterior cord of brachial plexus
49
The thoracodorsal nerve arises from
the posterior cord of brachial plexus
50
the medial pectoral nerve arises from
the medial cord of brachial plexus
51
injury to the long thoracic nerve leads to
winged scapula (innervates serratus anterior)
52
Area superior to the clavicle drains to _____ nodes
deep cervical nodes
53
area inferior to clavicle drains to ______ nodes
various axillary nodes
M1
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