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PNS > Exam 3 Quiz 4- Brachial Plexus > Flashcards

Exam 3 Quiz 4- Brachial Plexus Flashcards

(87 cards)

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1
Q

Each root recieves gray ramus communicans from the

A

Sympathetic trunk

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2
Q

Where two structures do the roots pass by

A

Between anterior and middle scalene muscles into posterior triangle

Posterior and superior to the subclavian artery

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3
Q

What root combines to form the superior trunk

A

C5/C6

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4
Q

What root makes up the middle trunk

A

C7

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5
Q

What roots make up the inferior trunk

A

C8 and T1

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6
Q

The lateral cord is formed by

A

The superior and middle trunks

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7
Q

What fibers are in the lateral cord

A

C5,6,7

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8
Q

Where is the lateral cord located?

A

LATERAL to the second part of the axillary artery

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9
Q

Medial cord is formed by the

A

Anterior division of the inferior trunk

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10
Q

Medial cord contains fibers from

A

C8, T1

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11
Q

The medial cord is located where

A

Medial to the second part of the axillary artery

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12
Q

The posterior cord is made up of

A

The posterior division of all three trunks

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13
Q

Posterior trunk contains fibers from

A

C5,6,7,8 and T1

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14
Q

The posterior cord lies

A

Posterior to the second part of the axillary artery

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15
Q

The dorsal scapular nerve is branches off the

A

C5 root, contains C5 FIBERS ONLY

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16
Q

What three muscles does the dorsal scapular nerve suppply

A

Rhomboid major/minor

Levator scapula (C3,C4 fibers)

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17
Q

Long thoracic nerve is formed from roots

A

C5,6,7

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18
Q

What does long thoracic nerve supply

A

Serratus anterior, fibers C5,6,7

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19
Q

What are the two nerves which branch off the superior trunk

A

Suprascapular nerve, nerve to subclavius

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20
Q

Suprascapular nerve contains fibers from

A

C5,C6

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21
Q

What two muscles does suprascapular nerve supply

A

Supraspinatus

Infraspinatus

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22
Q

Nerve to subclavius contains fibers from ______ and supplies ______

A

C5,6 subclavius

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23
Q

What other two nerves branch off the lateral cord

A

Lateral pectoral nerve

Musculocutaneous

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24
Q

Lateral pectoral nerve contains fibers from

A

C5,6,7 and supplies Pec major

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25
Musculocutaneous nerve contains fibers from
C5,6,7
26
What nerve supplies 3/4 muscles of the anterior arm
Musculocutaneous nerve
27
What three muscles does musculocutaneous supply
Coracobrachialis Biceps brachii Brachialis
28
What nerve pierces coracobrachialis
Musculocutaneous
29
What nerve continues into the forearm as the lateral cutaneous nerve of the forearm
Musculocutaneous
30
The ______________ is a branch of the musculocutaneous that goes into the forearm
Lateral cutaneous nerve of the forearm, supplies skin over the lateral aspect of the forearm
31
What are the two terminal branches of the lateral cord?
Median nerve Musculocutaneous nerve
32
The medial pectoral nerve contains fibers from
C8, T1
33
What two muscles does the medial pectoral nerve supply
Pec major/minor
34
Medial cutaneous nerve of the arm contains fibers from
C8, T1, can receive fibers from T2
35
Medial cutaneous nerve of the arm can receive fibers fromT2 via
Intercostobrachial nerve
36
The medial cutaneous nerve of the arm supplies skin over
The medial arm between the axilla and elbow
37
Medial cutaneous nerve of the forearm contains fibers from
C8 and T1
38
MEdial cutaneous nerve of the forearm supplies skin
Over biceps brachii, anterior and medial aspects of forearm distal to the wrist
39
Ulnar nerve contains fibers from
C8 and T1 sometimes C7
40
The ulnar nerve travels
Medial to the brachial artery, in the medial bicipital sulcus
41
True or False The ulnar nerve gives branches off in the arm
FALSE
42
Where does the ulnar nerve pass
Crosses posterior side of the medial epicondyle aka Funny BONE
43
The ulnar nerve travels in the forearm between
The two heads of flexor Capri ulnaris
44
What two muscles does the ulnar nerve innervate
Flexor Capri ulnaris Flexor digitorum profundus
45
The ulnar nerve gives off two sensory branches in the forearm the
Dorsal branch- ulnar side, posterior hand Palmar branch- skin over the hypothenar eminence
46
When the ulnar nerve travels into the wrist it divides into two branches
Superficial- supply palmer aspect of little finer and half of ring finger Deep
47
What nerve causes claw hand?
Ulnar nerve Aka ape hand
48
What are the three muscles of the hypothenar eminence
Abductor digiti minimi Flexor digiti minimi brevis Opponents digiti minimi
49
The ulnar nerve passes superior to the ______________ before dividing in the wrist
Flexor retinaculum
50
Median nerve contains fibers from
C6,7,8 and T1 Contains contributions from lateral and medial cord
51
The median nerve travels in the _______________ through the arm
Medial bicipital sulcus GIVES OFF NO BRANCHES IN THE ARM
52
Median nerve crosses the elbow _________ and between ________
Anterior side of elbow, two heads of pronator teres
53
The median nerve supplies how many muscles
7 in the forearm Pronator teres, flexor Carpi radialis, palmaris longus, flexor digitorum superficialis, pronator quadratus, flexor pollicis longus
54
What nerve is given off by the median nerve in the elbow
Anterior interosseous nerve of the forearm
55
The palmar branch of the median nerve supplies
Skin over thenar eminence, lateral wrist, palm
56
Median nerve travels
Deep to flexor retinaculum
57
Each common palmar digital nerve splits into
Two proper palmar digital nerves SENSORY FUNCTION ONLY
58
Hand of oath/ benediction is causes
Compression of median nerve and is present when patient makes a fist
59
How many branches are off the posterior cord
5, superior subscapular nerve, thoracodorsal, inferior subscapular, axillary, radial nerves
60
Superior subscapular nerve contains branches from
C5,6
61
The superior subscapular nerve supplies
Subscapularis
62
Thoracodorsal nerve contains fibers from
C6,7,8
63
What does thoracodorsal nerve supply
Latissimus dorsi, travels along posterior axillary wall
64
The inferior subscapular nerve contains fibers
C5,6
65
Inferior subscapular nerve supplies
Subscapularis and teres major
66
Axillary nerve contains fibers from
C5,6
67
Axillary nerve travels
Posterior around surgical neck of humerus
68
Axillary nerve supplies
Deltoid Teres minor
69
Axillary nerve gives off a sensory branch called
Superior lateral cutaneous nerve of the arm, supplies skin over the lateral shoulder and upper arm
70
Radial nerve contains fibers from
C5,6,7,8, T1
71
What supplies all the muscles of the posterior compartment of the arm and forearm
Radial nerve
72
Radial nerve spirals around
To posterior of humerus from the medial bicipital sulcus
73
The radial nerve passes on the _______ side if the elbow
Anterior and travels between brachialis and brachioradialis
74
Where does the radial nerve divide into superior and deep branch
At the level of the radial head
75
What branch of the radial nerve terminates as the posterior interosseous nerve
Deep branch of radial nerve
76
Deep branch of the ulnar nerve gives off the
Posterior interosseous nerve
77
The posterior cutaneous nerve of the arm branches off in the ________ and supplies __________.
Upper arm, posterior side of the upper arm
78
The inferior lateral cutaneous nerve of the arm and branches off in the
Radial in the middle arm
79
Radial nerve supplies
Triceps brachii Anconeus
80
The posterior cutaneous nerve of the forearm supplies
The narrow area of skin on the lateral side of the posterior forearm
81
Posterior cutaneous nerve of the forearm branch off at the LATERAL EPICONDYLE to supply
Brachioradialis Extensor carpi radialis longus
82
The superficial branch of the radial nerve in the hand gives off
Dorsal digital nerves which provide sensory info Also gives off communicating branch with the ulnar nerve
83
The radial nerve sends _______ to the shoulder and wrist
Articular branches
84
Supraclavicular damage mc occurs from
Birth trauma part of C5,6 roots
85
What nerves does Erb-Duchenne involve
Suprascapular, musculocutaneous, axillary
86
Infraclavicular nerve damage involves
C8, T1 Aka Klumpke
87
Infraclavicular damage can result in
Horner's syndrome- because of sympathetic at T1. Ptosis and miosis

PNS (11 decks)

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