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ANATOMY > Lecture 11: Brachium And Elbow > Flashcards

Lecture 11: Brachium And Elbow Flashcards

1
Q

What muscles extend the arm

A

Supraspinatus
Triceps brachii (long head)
Brachiocephalicus

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2
Q

What muscles flex the arm (delta takes little planes)

A
  • deltoideus
  • teres major
  • teres minor
  • latissimus dorsi
  • pectoralis profundus
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3
Q

What muscle abduct the arm

A

Infraspinatus

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4
Q

What muscles adduct the arm

A
  • pectoral muscles
  • subscapularis
  • coracobrachialis
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5
Q

What are the 3 joints of the elbow

A

Radio-humeral joint
Ulno-humeral joint
Proximal radio-ulnar joint

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6
Q

What ligaments support the elbow

A

Lateral collateral
Medial collateral
Annular ligament of radius
Oblique ligament

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7
Q

What ligament of the elbow prevents over-extension of the elbow

A

Oblique ligament

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8
Q

What ligaments of the elbow prevent excessive abduction and adduction of the radius and ulna relative to the humerus

A

Collateral ligaments

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9
Q

What joints of the elbow permit the flexion/extension along a sagittal plane

A

Radio-humeral joint
Ulno-humeral joint

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10
Q

What ligament of the elbow allows for pronation/supination of the distal radius

A

Annular ligament of the radius

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11
Q

What are the flexor muscles of the arm that act at the elbow

A

Biceps brachii
Brachialis

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12
Q

What artery supplies the flexor compartment muscles of the arm

A

Brachial artery

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13
Q

What nerve innervates the flexor muscles of the arm

A

Musculocutaneous

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14
Q

What are the extensor muscles of the arm that act on the elbow

A

triceps brachii
tensor fascia antebrachi
anconeus

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15
Q

What artery supplies the extensor muscles of the arm

A

Deep brachial artery

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16
Q

What nerve innervates the extensor muscles of the arm

A

Radial nerve

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17
Q

Origin of the long head of triceps brachii (1)

A

Infaglenoid tubercle and caudal edge of scapula

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18
Q

Origin of the lateral head of Cicero’s brachii (2)

A

B/w the tuberosity for the teres minor and the deltoid tuberosity

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19
Q

Origin of the medial head of the triceps brachii (3)

A

On the crest of the minor tubercle b/w the point of insertion of the teres major and that of the coracobrachialis

20
Q

Origin of the accessory head of the triceps brachii (4)

A

From the proximal caudal part of the neck to the humerus

21
Q

What is the insertion point of the triceps brachii

A

Olecranon process of the ulna

22
Q

What happens when there is an avulsion fracture of the olecranon

A

Loss of triceps brachii attachment
Loss of elbow extension
- inability to support weight of the limb

23
Q

What is the origin and insertion of the brachialis

A

O: caudal aspect of the proximal humerus
I: ulnar tuberosity b/w 2 deep insertion of biceps brachi

24
Q

Origin of the biceps brachii

A

O: supraglenoid tubercle

25
Q

What are the deep insertions of the biceps brachii

A

On the radial tuberosity and medial ulna

26
Q

What is the superficial insertion of the biceps brachii

A

Antebrachial fascia via bicipital aponévroses (lateral fibrosis)

27
Q

In horses, a fibrous band, the _______ joins the tendons of origin and insertion of the biceps brachii

A

The internal tendon

28
Q

The ____ tendon enables the muscle to store energy when stretched during the support phase of stride

A

Central

29
Q

The brachial plexus is protected by muscles of the arm, particularly the _________ and _______

A

Pectoral muscles and serratus ventralis

30
Q

What is the origin of the radial nerve

A

C7-T1

31
Q

What muscles are innervated by the radial nerve

A

Triceps brachii, anconeus, tensor fasciae antebrachii

32
Q

What is the origin of the musculocutaneous nerve

A

C7-C8

33
Q

What muscles are innervated by the musculocutaneous nerve

A

Coracobrachialis
Biceps brachii
Brachialis

34
Q

What is the origin of the medial and ulnar nerves

A

C8-T1

35
Q

What muscles does the median nerve innervated

A

Most of the flexor muscles of the carpus and digits

36
Q

What muscles does the ulnar nerve innervate

A

Most of the flexor muscles of the carpus and digit

37
Q

What is #1

A

Humeral shaft

38
Q

What is #2

A

Medial epicondyle

39
Q

What is #3

A

Lateral epicondyle

40
Q

What is #4

A

Trochlea of humerus

41
Q

What is #5

A

Capitulum of humerus

42
Q

What is #6

A

Olecranon (ulna)

43
Q

What is #7

A

Olecranon process (tuber)

44
Q

What is #8

A

Medial coronoid process of ulna

45
Q

What is #9

A

Head of radius

46
Q

Which neurovascular structures are potentially endangered by a fracture of the humeral shaft

A

ANATOMY (58 decks)

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