Upper Limb pre-practical lecture Flashcards

1
Q

What are the main sections of the brachial plexus?

A
Roots
Trunks
Anterior (division)
Posterior (division)
Cords
Terminal branches
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2
Q

What are the main branches of the brachial plexus?

A

Axillary nerve (C5, 6)
Long thoracic nerve (C5, 6, 7)
Thoracodorsal (C6, 7, 8)
Subscapular (C5, 6)

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3
Q

What are the nerve roots of the axillary nerve?

A

C5, 6

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4
Q

What are the nerve roots of the Long thoracic nerve?

A

C5, 6, 7

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5
Q

What are the nerve roots of the Thoracodorsal nerve?

A

C6, 7, 8

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6
Q

What are the nerve roots of the subscapular nerve?

A

C5, 6

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7
Q

What are the main causes of brachial plexus injuries?

A

Pulling arm superiorly
Pulling arm during childbirth
Falling on head/neck

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8
Q

What are the joints of the pectoral girdle?

A

Acromioclavicular (AC) joint
Sternoclavicular (SC)
Glenohumoural (GH)

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9
Q

What type of joint is the Acromioclavicular (AC) joint?

A

Synovial plane

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10
Q

What type of joint is the Sternoclavicular (SC) joint?

A

Synovial saddle

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11
Q

What type of joint is the Glenohumoural (GH) joint?

A

Synovial ball and socket

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12
Q

What are the movements of the scapula?

A
Elevation
Depression
Adduction (retraction)
Abduction (protraction)
Upward rotation
Downward rotation
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13
Q

What are the muscles of the pectoral girdle?

A

Trapezius
Latissimus dorsi
Serratus anterior

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14
Q

What muscles elevate the scapula?

A

Descending (superior) trapezius
Levator scapulae
Rhomboids

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15
Q

What muscles depress the scapula?

A

Ascending (inferior) trapezius
Inferior serratus anterior
Pec major

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16
Q

What muscles protract the scapula?

A

Serratus anterior

Pec minor

17
Q

What muscles retract the scapula?

A

Middle trapezius
Rhomboids
Latissimus dorsi

18
Q

What muscles externally rotate the scapula?

A

Descending (superior) trapezius

Inferior serratus anterior

19
Q

What muscles internally rotate the scapula?

A

Latissimus dorsi

Rhomboids

20
Q

What structure forms the glenoid cavity?

A

Glenoid (surface)

Labrum

21
Q

What are the main bursae of the shoulder?

A

Subscapular bursa
Subacromial bursa
Subcoracoid bursa

22
Q

What are the rotator cuff muscles?

A

Teres minor
Supraspinatus
Infraspinatus
Subscapularis

23
Q

What is the scapulo-humeral rhythm?

A

When arm is abducted 180 degrees - 60 is by the scapula and 120 is the humerus

24
Q

What are the muscles of the anterior arm?

A

Biceps
Brachialis
Coracobrachialis

25
Q

What is the function of biceps brachii?

A

Flex shoulder and elbow

Supinate forearm

26
Q

What is the function of brachialis?

A

Flex elbow

27
Q

What is the function of coracobrachialis?

A

Flex and adduct shoulder joint

28
Q

What is the innervation of the anterior arm?

A

Musculocutaneous nerve

C5, 6, 7

29
Q

What is the innervation of triceps?

A

Axillary nerve

Radial nerve