Forelimbs

Question 1

Origin of subclavius

Answer 1

Sternum and costal cartilages 1-4

Question 2

Insertion of subclavius

Answer 2

Blends with supraspinatus and shoulder fascia

Question 3

Action of subclavius

Answer 3

Suspends trunk; stabilizes shoulder joint

Question 4

Innervation of subclavius

Answer 4

Cranial pectoral nerves

Question 5

Origin of supraspinatus

Answer 5

Supraspinous fossa, scapular cartilage and spine

Question 6

Insertion of supraspinatus

Answer 6

Greater and lesser tubercles of the humerus

Question 7

Action of supraspinatus

Answer 7

Extends and stabilizes the shoulder joint

Question 8

Innervation of supraspinatus

Answer 8

Suprascapular nerve

Question 9

Origin of infraspinatus

Answer 9

Infraspinatus fossa, scapular cartilage and spine

Question 10

Insertion of infraspinatus

Answer 10

Fleshy of greater tubercle of humerus; strong tendon to lat. surface of greater tubercle distal to lat. insertion of supraspinatus

Question 11

Action of infraspinatus

Answer 11

Extends and flexes the shoulder joint; functions as lat. contractile ligament

Question 12

Innervation of infraspinatus

Answer 12

Suprascapular nerve

Question 13

Origin of superficial pectorals
(Transverse)

Answer 13

(transverse) costal cartilages 1-6 and adjacent sternum

Question 14

Origin of superficial pectorals
(Descendens)

Answer 14

(descendens) manubrium sterni

Question 15

Origin of superficial pectorals
(Deep)

Answer 15

(deep) Sternum; distally on ribs 4-9; tunica flava abdominis

Question 16

Insertion of superficial pectorals (Transverse)

Answer 16

Forearm fascia

Question 17

Insertion of superficial pectorals (Descendens)

Answer 17

Deltoid tuberosity and crest of humerus

Question 18

Insertion of superficial pectorals (Deep)

Answer 18

Major and minor tubercles of humerus; tendon of origin of coracobrachialis

Question 19

Action of superficial pectorals (transverse & descendens )

Answer 19

Connect the forelimb with trunk; adduct, protract and retract forelimb

Question 20

Action of superficial pectorals (deep)

Answer 20

Suspends trunk between forelimbs; retracts limb; stabilizes shoulder joint

Question 21

Innervation of superficial pectorals

Answer 21

Cranial and caudal pectoral nerves

Question 22

Origin of long head of triceps

Answer 22

Long head: caudal border of the scapular

Question 23

Origin of lateral head of triceps

Answer 23

Lateral head: deltoid tuberosity and vicinity

Question 24

Insertion of Triceps brachii

Answer 24

Olecranon tuber (underlain by small bursa)

Question 25

Action of Triceps brachii

Answer 25

Extends elbow joint, its long head also flexes shoulder joint

Question 26

Innervation of triceps brachii

Answer 26

Radial nerve

Question 27

Origin of biceps brachii

Answer 27

Supraglenoid tubercle

Question 28

Insertion of biceps brachii

Answer 28

Radial tuberosity; medial collateral ligament; via lacertus fibr. On tendon of extensor carpi radialis

Question 29

Action of biceps brachii

Answer 29

Extensor of the shoulder joint; flexor of elbow joint; via lactus fibr. Stabilizer of carpus (in stay-apparatus)

Question 30

Innervation of biceps brachii

Answer 30

Musculocutaneous nerve

Question 31

Origin of deltoideus

Answer 31

Clavicular part: Clavicular inscription Scapular part: Aponeurotically from scapular spine; fleshy from caudal border of scapula

Question 32

Insertion of deltoideus

Answer 32

Clavicular part: crest of humerus Scapular part: deltoid tuberosity

Question 33

Action of deltoideus

Answer 33

Advances limb and flexes shoulder joint

Question 34

Innervation of deltoideus

Answer 34

Axillary nerve