Anatomny of upper limbs

Question 1

Anterior muscles of arm consists of?

What nerves supply Anterior muscles of arm?

Answer 1

Biceps Brachii Coracobrachialis Brachialis

Musculocutaneous nerve

Question 2

Posterior muscles of arm consists of?

What nerve supply posterior muscle of arm?

Answer 2

Triceps Brachii Anconeus

Radial nerve

Question 3

Biceps Brachii PA, DA, NS, A

Answer 3

PA: Short Head- coracoid process of scapula
Long Head- Supraglenoid tubercle of scapula via
bicipital groove
DA: Radial Tuberosity of radius & fascia of the forearm
via bicipital aponeurosis
NS: Musculocutaneous nerve
A: Supinate forearm, flexes forearm in supinated position, short head resists inferior dislocation

Question 4

Coracobrachialis PA, DA, NS, A

Answer 4

PA: Coracoid process of scapula
DA: middle 1/3 of medial humerus
NS: Musculocutaneus
A: Assits in flexion and adduction of the arm, resists 
     shoulder dislocation

Question 5

Brachialis PA, DA, NS, A

Answer 5

PA: distal half, anterior surface of humerus
DA: Coronoid process and tuberosity of ulna
NS: Musculocutaneous nerve
A: Flexes forearm in all position

Question 6

Triceps Brachii PA, DA, NS, A

Answer 6

PA: Long head - Infraglenoid tubercle of scapula
Lateral head - posterior surface of humerus,
superior to radial groove
Medial head - posterior surface of humerus,
inferior to radial groove
DA: Olecranon process of ulna
NS: Radial nerve
A: Extension of forearm, long head prevents downward dislocation of humerus

Question 7

Anconeus PA, DA, NS, A

Answer 7

PA: Lateral epicondyle of humerus
DA: Lateral surface of the olecranon of ulna
NS: Radial nerve
A: Assists triceps in forearm extension

Question 8

Anterior Axio appendicular muscles consists of?

Answer 8

Pectoralis Major, Pectoralis minor, Subclavius, Serratus Anterior

Question 9

Pectoralis Major PA, DA, NS, A

Answer 9

PA: Clavicular Head- anterior surface of medial 1/2 of
clavicle
Sternocostal head - anterior sternum, superior 6
costal cartilages(ribs)
DA: Lateral lip of intertubercular groove
NS: Lateral & medial pectoral nerves
A: Adducts and medially rotates humerus
Clavicular head flexs humerus
Sternocostal head extends from flexed position

Question 10

Pectoralis Minor PA, DA, NS, A

Answer 10

PA: 3-5 ribs near costal cartilages
DA: Coracoid process
NS: Medial pectoral nerve
A: Stabilises scapula by drawing it inferiorly and anteriorly on thoracic cage

Question 11

Subclavius PA, DA, NS, A

Answer 11

PA: Juction of 1st rib and costal cartilage
DA: Inferior surcace of the middle third of the clavicle
NS: Nerve to subcalvius
A: Anchors and depresses clavicle

Question 12

Serratus Anterior PA, DA, NS, A

Answer 12

PA: Anterior surface of medial border of scapula
DA: External surface of the lateral parts of rib 1-8
NS: Long thoracic nerve
A: Protracts scapula & holds it on thoracic wall, rotates scapula superiorly

Question 13

Posterior Axioappendicular Muscle (extrinsic shoulder) muscles consist of?

Answer 13

Superficial: Trapezius, Latissimus Dorsi

Deep Group: Levator Scapulae, Rhomboid Major, Rhomboid Minor

Question 14

Trapezius PA, DA, NS, A

Answer 14

PA: Superior nuchal line, external occipital protuberance, nuchal ligament, SPs of C7-T12 vertebrae
DA; Lateral 1/3 of clavicle, acromion and spine of scapula
NS: Accessory nerve (CN XI) (moter)
C3/4 spinal nerves (pain and proprioception)
A: Superior-elevates scapula
Middle (and all part) - retracts scapula
Inferior - depresses scapula
Superior and inferior together - rotate scapula
superiorly

Question 15

Latissimus Dorsi PA, DA, NS, A

Answer 15

PA: SPs of inferior 6 thoracic vert, thoracolumabr fascia, illiac crest, inferior 3-4 ribs
DA: intertubercular groove
NS: Thoracodorsal nerve
A: Extends, adducts and medially rotates the humerus
Combined movement to pull body up or upper limb
down

Question 16

Levator Scapulae PA, DA, NS, A

Answer 16

PA: TPs C1-4 vertebrae
DA: Medial Border of the scapula superior to the spine of the scapula
NS: Dorsal Scapular nerve & Cervical nerves c3,4
A: Elevates scapula and inferiorly rotates glenoid fossa

Question 17

Rhomboids PA, DA, NS, A

Answer 17

PA: Minor - Nuchal lig, SPs of C7-T1
Major - SPs of T2 - T5
DA: Minor - Medial end of spine of scapula
Major - Medial border of scapula below the spine
of scapula
NS: Dorsal Scapular nerve
A: Retract scapula, inferorly rotate scapula, fix scapula against thoracic wall

Question 18

Scapulohumeral Muscles (intrinsic shoulder muscle) consist of?

Answer 18

Deltoid
Teres Major
Supraspinatus
Infraspinatus
Subscapularis
Teres Minor

Question 19

Deltod PA, DA, NS, A

Answer 19

PA: Lateral 1/3 of clavicle, Acromion, spine of scapula
DA: deltoid tuberosity of humerus
NS: Axillary nerve
A: Anterior - flex and medial rotate arm
Middle - abduct arm (or all together)
Posterior - extends and laterally rotates arm

Question 20

Teres Major PA, DA, NS, A

Answer 20

PA: posterior surface of inferior angle of scapula
DA: Medial lip of intertubercular groove
NS: Lower subscapular nerve
A: Adducts and medially rotates the arm

Question 21

Teres Minor PA, DA, NS, A

Answer 21

PA: Middle part of the lateral border

Question 22

Supraspinatus PA, DA, NS, A

Answer 22

PA: Supraspinous fossa
DA: Superior facet of the greater tubercle of humerus
NS: Suprascapular nerve
A: Initiates and assits Deltoid in abduction of arm, stabilizes GH joint

Question 23

Infraspinatus PA, DA, NS, A

Answer 23

PA: Infraspinous fossa
DA: middle facet of the greater tubercle of the humerus
NS: Suprascapular nerve
A: Laterally rotates humerus, stabilises GH joint