Forelimb

39問 • 1年前

問題一覧

Which of the following statements about brachialis is correct? 1. innervated by radial nerve 2. arises from supraglenoid tuberosity of scapula 3. shoulder extensor 4. inserts into radius and ulna

4 only is correct

Name the lateral and medial support of the shoulder joint and their insertion?

Lateral = infraspinous and supraspinous muscle - greater tubercle of humerus Medial = subscapularis muscle - lesser tubercle of humerus

OIAN of brachiocephalicus?

O = cervico-thoracic fascia I = medial distal humerus A = protractor + shoulder extensor N = accessory nerve

OIAN of omotransversarius?

O = atlas I = acromion process of scapula A = protractor N = accessory nerve

OIA of serrated ventralis?

O = cervical vertebrae + first 8 ribs I = serrated face if scaoula A = protractor AND retractor

OIAN of trapezius?

O = cervico-thoracic fascia I = proximal spine of scapula A = abductor N = accessory nerve

OIAN of rhomboideus?

O = cervico-thoracic fascia I = dorsal border of scapula A = abductor

OIAN of pectorals?

O = sternum I = greater tubercle of humerus A = adductor

OIAN of lattisumus dorsi?

O = thoraco-lumbar fascia I = teres major tuberosity of humerus A = retractor + shoulder flexor

OIAN of biceps brachii?

O = supraglenoid tubercle of scapula I = ulnar and radial tuberosities A = shoulder extensor + elbow flexor N = musculocutaneous nerve

3 forelimb protractors?

Brachiocephalicus Omotransversaris Serratus ventralis

2 forelimb retractors?

Lattisimus dorsi Serratus ventralis?

2 foremlimb abductors?

Trapesius Rhomboideus

3 muscles of the forelimb innervated by accessory nerve?

Brachiocephalicus Omotransversaris Trapezius

2 forelimb adductors?

Pectorals Subscapularis

5 shoulder extensors?

Brachiocephalicus Biceps brachii Coracobrachialis Supraspinatus Infraspinatus

2 elbow flexors?

Biceps brachii Brachialis

4 shoulder flexors?

Deltoideus LONG head of triceps Teres major + minor Lattisimus dorsi

4 extensors of distal limb origin, insertion and innervation?

Extensor carpi radialis - MC 2 + 3 Common digital extensor - all digits Lateral digital extensor - 4,5 digits Ulnar lateralis - 5th MC + ACB O = lateral epicondyle of humerus N = radial nerve

4 flexors of distal limb and origin, insertion and innervation?

Flexor carpi ulnaris - ACB Superficial digital flexor - middle phalanx of all digits Deep digital flexor - distal phalanx of all digits Flexor carpi radialis - MC 2 + 3 O = medial epicondyle of humerus N = median + ulnar nerve

OIAN of brachialis?

O = lateral caudal humerus I = proximal medial radius A = elbow flexor N = musculocutaneous nerve

2 muscles of forelimb innervated by musculocutaneous nerve?

Biceps brachii Brachialis

OIAN of triceps?

4 heads or PPE origin - long head = caudal border of scapula - lateral head = humerus - accessory + medial = medial humerus I = olecranon process of ulna A = elbow extensor + shoulder flexor (long) N = radial nerve

OIAN of deltoideus?

O = scapular spine + acromion process (2 heads) I = deltoid tuberosity of humerus A = shoulder flexor N = axillary

OIAN of teres major?

O = caudal border of scapula I = medial humerus A = shoulder flexor N = axillary

2 muscles spinnervated my axillary nerve?

Deltoideus Teres major

Comparative anatomy of cats shoulder joint compared to dogs?

Extra tuberoisty proximal to acromion More rounded cranial angle of scapula More developed coracoid process of scapula Vesigial clavicle = bony remnant lying within brachiocephalicus muscle (dogs = tendonous line)

Comparative elbow joint of cats?

Supercondylar foramen instead of supratrochlea foramen = median nerve and brachial artery Round medial epicondyle Longer + slimmer bones

Comparative distal forelimb of cats?

Square olecranon More interosseous space Longer + slimmer bones

What passes through intertubercular groove on humerus?

Tendon of origin of biceps brachii

What’s the importance of musculospiral groove on humerus?

Origin of brachialis muscle Radial nerve + cephalon vein pass

What 3 extrinsic muscles are supplied by brachial plexus?

Lattisumus dorsi Serratus ventralis Pectorals

What actions can still occur with brachial plexus damage and why?

Abduct = trapezius and rhomboideus unaffected Protract = brachiocephalicus has partial innervation outside brachial plexus

What muscle originates from acromion process of scapula?

Deltoideus

What muscle originates from supraglenoid tubercle of scapula?

Biceps brachii

What muscle inserts on proximal scapula spine?

Trapezius

What muscle inserts in acromion process?

Omotransversaris

What 3 muscles insert of greater tubercle of humerus?

Pectorals Supraspinatus Infraspinatus

What 2 muscles insert on lesser tubercle?

Subscapularis Coracobrachialis