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ANATOMY > WEEK 13 (Muscles of the upper limb) > Flashcards

WEEK 13 (Muscles of the upper limb) Flashcards

1
Q

Which muscles connect the Scapula and Clavicle to the trunk?

A
  • Trapezius
  • Levator Scapulae
  • Rhomboids
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2
Q

Which muscles connect the Scapula and body wall to the proximal end of the Humerus?

A
  • Pectoralis major
  • Pectoralis minor
  • Latissimus dorsi
  • Teres major
  • Deltoid
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3
Q

What are the Rotator cuff muscles?

A
  • Supraspinatus
  • Infraspinatus
  • Teres minor
  • Subscapularis
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4
Q

How is the anterior compartment of the arm separated from muscles of the posterior compartment?

A
  • Humerus and Medial & Lateral Intermuscular septa
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5
Q

How is the anterior and posterior compartments separated in the forearm?

A
  • Lateral intermuscular septum
  • Radius
  • Ulna
  • Interosseous membrane
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6
Q

What is the main function of the muscles in the arm?

A

To move the forearm at the elbow joint

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7
Q

What is the main function of the muscles in the forearm?

A

To move the hand at the wrist joint and the fingers & thumb

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8
Q

Muscles of the Anterior forearm are ____________

A

FLEXORS

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9
Q

Muscles of the Posterior forearm are _____________

A

EXTENSORS

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10
Q

What are the most superficial muscles of the shoulder?

A

Trapezius & Deltoid muscles

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11
Q

What do the Trapezius and the Deltoid attach to?

A

Trapezius attaches the scapula and clavicle to the trunk

Deltoid attaches the scapula and clavicle to the humerus

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12
Q

Which three muscles attach the scapula to the vertebral column?

A
  • Levator scapulae
  • Rhomboid minor
  • Rhomboid major
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13
Q

What is the function of the Trapezius?

A
  • Powerful elevator of the scapula
  • Rotates the scapula during abduction of humerus above horizontal
  • Retraction of scapula
  • Depression of scapula
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14
Q

What is the function of the Deltoid?

A
  • Major abductor of arm
  • Clavicular fibers assist in flexing the arm
  • Posterior fibers assist in extending the arm
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15
Q

What is the function of the Levator scapulae?

A

Elevates the scapulae

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16
Q

What is the function of the Rhomboid major & minor?

A

Elevates and retracts the scapula

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17
Q

What is the function of the Supraspinatus?

A
  • Rotator cuff muscle
  • Abduction of the glenohumeral joint
  • Stabilisation of the glenohumeral joint
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18
Q

What are the four muscles in the Posterior scapular region?

A
  • Supraspinatus
  • Infraspinatus
  • Teres minor
  • Teres major
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19
Q

What is the function of Rotator cuff muscles?

A

To stabilise the glenohumeral joint

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20
Q

What is the function of the Infraspinatus?

A
  • Rotator cuff muscle
  • Lateral rotation of arm at the glenohumeral joint
  • Stabilisation of glenohumeral joint
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21
Q

What is the function of the Teres minor muscle?

A
  • Rotator cuff muscle
  • Lateral rotation of arm at the glenohumeral joint
  • Stabilisation of glenohumeral joint
22
Q

What is the function of the Teres major muscle?

A
  • Adducts
  • Medially rates shoulder joint
23
Q

What is the function of the Long head of triceps brachii?

A
  • Extension of the forearm at the elbow joint
  • Accessory adductor and extensor of the arm at the glenohumeral joint
24
Q

What is the function of the Pectoralis Major?

A
  • Flexion
  • Adduction
  • Medial rotation of arm at glenohumeral joint
25
What is the difference in the functions of the two heads of the Pectoralis major?
Clavicular head = flexion of extended ar Sternocostal head = extension of flexed arm
26
What is the function of the Subclavius?
- Pulls tip of shoulder down - Pulls clavicle medially to stabilise sternoclavicular joint
27
What is the function of the Pectoralis minor?
- Pulls tip of shoulder down - Protracts scapula
28
What is the function of the Subscapularis?
- Rotator cuff muscle - Medial rotation of the arm at the glenohumeral joint
29
What is the function of the Latissimus dorsi?
- Adduction - Medial rotation - Extension of the arm at the glenohumeral joint
30
What is the function of the Biceps brachii?
- Flexor of the forearm at elbow joint - Supinator of the forearm - Accessory flexor of the arm at the glenohumeral joint
31
What is the function of the Coracobrachialis?
- Flexor of the arm at the glenohumeral joint - Adductor of arm
32
What is the function of the Brachialis?
Powerful flexor of the forearm at the elbow joint
33
What is the function of the Flexor carpi ulnas?
Flexes and adducts at wrist joint
34
What is the function of the Palmaris longus?
Flexes wrist joint
35
What is the function of the Flexor carpi radialis?
Flexes and abducts the wrist
36
What is the function of the Pronator Teres?
Pronation
37
What is the function of the Flexor digitorum (deep & superficial)?
- Flexes proximal interphalangeal joints of the index, middle, ring and little fingers - Flex metacarpophalngeal joints of the same fingers and the wrist joint
38
What is the function of the Flexor policies longus?
- Flexes interphalangeal joint of the thumb - Flex metacarpophalangeal joint of the thumb
39
What is the function of the Pronator quadratus?
Pronation
40
What is the function of the Brachioradialis?
Accessory flexor of elbow joint when forearm is midpronated
41
What is the function of the Extensor carpi radialis longus?
Extends and abducts the wrist
42
What is the function of the Extensor digitorum?
- Extends the index, middle, ring and little fingers - Extends the wrist
43
What is the function of the Extensor digiti minimi?
Extends the little finger
44
What is the function of the Extensor carpi ulnaris?
Extends and adducts the wrist
45
What is the function of the Anconeus?
- Muscle of the elbow - Abduction of the ulna in pronation - Accessory extensor of the elbow joint
46
What is the function of the Supinator?
Supination
47
What is the function of the Abductor pollicis longus?
- Abducts carpometacarpal joint of thumb - Accessory extensor of the thumb
48
What is the function of the Extensor Indicis?
Extends index finger
49
What is the function of the Palmaris brevis?
Improves grip
50
What is the function of the Dorsal interossei?
Abduction of index, middle and ring fingers at the metacarpophalangeal joints
51
What is the function of the Palmae interossei?
Adduction of the thumb, index, ring and little fingers at the metacarpophalangeal joints
52
What is the function of the Lumbricals?
Flex metacarpophalangeal joints while extending interphalangeal joints

ANATOMY (13 decks)

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