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Gross Anatomy I > Brachial Plexus > Flashcards

Brachial Plexus Flashcards

1
Q

Dorsal Scapular N

A 
(C5)
Levator Scapulae (C3, C4, C5)
Rhomboid Minor (C4, C5)
Rhomboid Major (C4, C5)
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2
Q

Subscapular N

A

(C5, C6)
Suprspinatus (C5, C6)
Infraspinatus (C5, C6)

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3
Q

Subclavius N

A

(C5)

Subclavius (C5, C6)

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4
Q

Lateral Pectoral N

A

Pectoralis Major (C5, C6, C7)

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5
Q

Musculocutaneous N

A

(C5, C6, C7)
Coracobrahcialis (C5, C6, C7)
Short Head and Long Head of Biceps (C5, C6)

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6
Q

Axillary N

A 
(C5, C6)
Anterior Deltoid (C5, C6)
Middle Deltoid (C5, C6)
Posterior Deltoid (C5, C6)
Teres Minor (C5, C6)
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7
Q

Long Thoracic N

A 
(C5, C6, C7)
Serratus Anterior (C5, C6, C7)
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8
Q

Upper Subscapular N

A

(C5, C6)

Subscapularis (C5, C6, C7)

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9
Q

Thoracodorsal N

A 
(C6, C7, C8)
Latissimus Dorsi (C6, C7, C8)
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10
Q

Lower Subscapular N

A

(C5, C6)
Subscapularis (C5, C6, C7)
Teres Major (C5, C6)

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11
Q

Medial Pectoral N

A 
(C8, T1)
Pectoralis Minor (C8, T1)
Pectoralis Major (C8, T1)
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12
Q

Medial Brachial Cutaneous N

A

(C8, T1)

Sensory for skin of MEDIAL arm and MEDIAL UPPER forearm

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13
Q

Medial Antebrachial Cutaneous N

A

(C8, T1)
Muscles of forearm and hand
Skin of hand

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14
Q

Median N

A 
Lat: (C5, C6, C7)
Med: (C8, T1)
Pronator Teres (C6)
Flexor Carpi Radialis (C6, C7)
Palmaris Longus (C7)
Flexor Digitorum Superficialis (C7, C8, T1)
Flexor Digitorum Profundus (C8, T1)
Flexor Pollicis Longus (C8, T1)
Pronator Quadratus (C8, T1)
Abductor Pollicis Brevis (C8, T1) Recurrent Branch
Opponens Pollicis (C8, T1) Recurrent Branch 
Lumbricales (C8, T1)
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15
Q

Radial N

A 
(C5, C6, C7, C8)
Supinator (C5, C6)
Triceps (C6, C7, C8)
Anconeus (C7, C8, T1)
Brachioradialis (C5, C6)
Extensor Carpi Radialis Longus (C6, C7) Brevis (C7)
Extensor Digitorum (C7, C8)
Extensor Digiti Minimi (C7, C8)
Extensor Carpi Ulnaris (C6, C7)
Adductor Pollicis Longus (C7, C8)
Extensor Pollicis Longus and Brevis (C7, C8)
Extensor Indicis (C7, C8)
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16
Q

Ulnar N.

A 
(C8, T1)
Flexor Carpi Ulnaris (C8, T1)
Lumbricales 3, 4 (C8, T1)
Dorsal/ Palmar Interosseous (C8, T1)
Opponens Digiti Minimi (C8, T1)
Palmaris Brevis (C8, T1)
Abductor Digiti Minimi (C8, T1)
Adductor Pollicis (C8, T1)
Flexor Pollicis Brevis (C8, T1)
Flexor Digitorum Profundus (C8, T1)
Flexor Digiti Minimi Brevis (C8, T1)
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17
Q

Muscles innervated by DORSAL SCAPULAR N.

A

Rhomboid Major, Rhomboid Minor, Levator Scapulae

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18
Q

Muscles innervated by LONG THORACIC N.

A

Serratus Anterior

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19
Q

Muscles innervated by N. to SUBCLAVIUS

A

Subclavius

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20
Q

Muscles innervated by SUPRASCAPULAR N.

A

Supraspinatus, Infraspinatus

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21
Q

Muscles innervated by LATERAL PECTORAL N.

A

Pectoralis Major

22
Q

Muscles innervated by MUSCULOCUTANEOUS N.

A

Coracobrachialis, Biceps Brachii, Brachialis, SKIN of lateral forearm (by lateral antebrachial N.)

23
Q

Muscles innervated by LATERAL ROOT of MEDIAN N.

A

Muscles of the forearm and hand; SKIN of the hand

24
Q

Muscles innervated by MEDIAL PECTORAL N.

A

Pectoralis Major, Pectoralis Minor

25
Q

Muscles innervated by MEDIAL BRACHIAL CUTANEOUS N.

A

Medial SENSORY of SKIN of arm and UPPER MEDIAL forearm

26
Q

Muscles innervated by ULNAR

A

Muscles of the forearm and hand; SKIN of the hand

27
Q

Muscles innervated by MEDIAL ROOT OF MEDIAN N.

A

Muscles of the hand

28
Q

Muscles innervated by UPPER SUBSCAPULAR N.

A

Subscapularis

29
Q

Muscles innervated by THORACODORSAL N.

A

Latissimus Dorsi

30
Q

Muscles innervated by LOWER SUBSCAPULAR N.

A

Subscapularis, Teres Major

31
Q

Muscles innervated by AXILLARY N.

A

Deltoid, Teres Minor, SKIN of the lateral upper arm (by LATERAL BRACHIAL CUTANEOUS N.)

32
Q

Muscles innervated by RADIAL N.

A

Triceps, Aconeus, Brachioradialis, Extensors of the wrist and hand (by DEEP RADIAL N.); SKIN of posterior arm and forearm (by SUPERFICIAL RADIAL N.)

33
Q

Muscle action of RHOMBOID MAJOR M.

A
  • Retracts the scapula
  • Assists in elevation of the scapula
  • Assists in rotating the glenoid fossa downward
  • Stabilizes the scapula for glenohumeral movement
34
Q

Muscle action of RHOMBOID MINOR M.

A
  • Retracts the scapula
  • Assists in elevation of the scapula
  • Assists in rotating the gleniod fossa downward
  • Stabilizes the scapula for glenohumeral movement
35
Q

Muscle action of LEVATOR SCAPULA M.

A
  • Elevates the scapula
  • Assists in rotating the gleniod fossa downward
  • Extends the neck (both sides)
  • Laterally flexes the neck (same side)
  • Rotates the neck (same side)
36
Q

Muscle action of SERRATUS ANTERIOR M.

A
  • Protraction of the scapula
  • Upward rotation of the scapula which elevates gleniod fossa
  • Stabilizes the scapula by holding its medial border toward the ribs
37
Q

Muscle action of SUBCLAVIUS M.

A
  • Depresses and stabilizes the clavicle
38
Q

Muscle action of SUPRASPINATUS M.

A
  • Abducts humerus
  • Depresses humeral head, pulls humeral head toward the glenoid fossa of the scapula
  • Stabilizes glenohumeral joint
  • Weak flexor
  • Internal and external rotator of the glenohumeral joint depending on humeral position
39
Q

Muscle action of INFRASPINATUS M.

A
  • Externally rotates humerus
  • Depresses humeral head, pulls humeral head toward the glenoid fossa of the scapula
  • Superior 1/3 assists in humeral abduction
  • Inferior 2/3 assists in humeral adduction
  • Stabilizes glenohumeral joint.
40
Q

Muscle action of PECTORALIS MAJOR M.

A
  • Adducts and internally rotates the humerus
  • Flexes the humerus when the glenohumeral joint is in extension
    Extends the humerus when the glenohumeral joint is
    in flexion
41
Q

Muscle action of CORACOBRACHIALIS M.

A
  • Flexion of the glenohumeral joint

- Assists in adduction of the glenohumeral joint

42
Q

Muscle action of BICEPS BRACHII M.

A
  • Flexion of the humeroradial and humeroulnar joints
  • Supination of the radioulnar joint; flexion of the glenohumeral joint
  • Abduction of the glenohumeral joint by the long head when the arm is externally rotated
43
Q

Muscle action of BRACHIALIS M.

A
  • Flexion of the humeroradial and humeroulnar joints
44
Q

Muscle action of PECTORALIS MINOR M.

A
  • Depresses the scapula
  • Downward scapular rotation
  • Stabilizes the scapula anteriorly
45
Q

Muscle action of SUBSCAPULARIS

A
  • Internally rotates humerus
  • Depresses humeral head
  • Pulls humeral head toward the glenoid fossa of the scapula
  • Assists in humeral adduction
  • Stabilizes glenohumeral joint
46
Q

Muscle action of LATISSIMUS DORSI M.

A
  • Adduction of the humerus at the glenohumeral joint
  • Humeral internal (medial) rotation
  • Assists in humeral extension and flexion depending on humeral position
  • May depress scapula if attached to inferior angle
47
Q

Muscle action of TERES MAJOR M.

A
  • Adducts and internally rotates the humerus
48
Q

Muscle action of DELTOID M.

A

Anterior:

  • Flexion
  • Abduction
  • Internal rotation of humerus

Middle:
- Abduction of the humerus

Posterior:

  • Extension
  • Abduction
  • External rotation of humerus
49
Q

Muscle action of TRICEPS M.

A

Short Head:
- Extends the humeroradial and humeroulnar joints

Long Head:

  • Assists in extension of the glenohumeral joint
  • Assists in glenohumeral adduction when the arm is abducted
50
Q

Muscle action of ANCONEUS M.

A

Extends the humeroradial and humeroulnar joints

51
Q

Muscle action of BRACHIORADIALIS M.

A
  • Flexion of the humeroradial and humeroulnar joints

Gross Anatomy I (1 decks)

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