Upper limb muscles

Question 1

Supraspinatus - Attachments

Answer 1

PA: Supraspinous fossa
DA: Superior Facet of greater tuberosity of humerus

Question 2

Supraspinatus - N/S & Action

Answer 2

N/S: suprascapular nerve (C4-6)
A: Abduct humerus

Question 3

Teres Minor - Attachments

Answer 3

PA: lateral border of scapula
DA: Inf. Facet Gr. Tub.

Question 4

Teres Minor - N/S & Action

Answer 4

NS: axillary n.(C5/6)
A: ER of Humerus

Question 5

Subscapularis - Attachments

Answer 5

PA: Subscapula fossa
DA: Lesser tubercle of humerus of humerus

Question 6

Subscapularis - N/S & Attachments

Answer 6

NS: Upr. and Lwr. subscapular ns. (C5-7)
A: IR of Humerus

Question 7

Infraspinatus - Attachments

Answer 7

PA: Infraspinous fossa
DA: Sup. Facet Gr. Tub. DA: Mid. Facet Gr. Tub. of humerus

Question 8

Infraspinatus - N/S & Action

Answer 8

NS: suprascapular n. (C5-6)
A: Abduct humerus A: ER of Humerus

Question 9

Deltoid - Attachments

Answer 9

PA: Lat 1/3 clav, acromium, spine of scap
DA: Deltoid tub. of humerus

Question 10

Deltoid - N/S & Action

Answer 10

NS: Axillary n. (C5/6)
A: Ant: flex and IR humerus, Mid: abduct humerus, Post: Ext and ER humerus

Question 11

Triceps brachii - Attachments

Answer 11

PA: Long head : infraglenoid tube; Lateral head: post humerus (sup to radial groove); Medial head: post humerus (inf to radial groove)
DA: Olecranon of ulna

Question 12

Triceps brachii - N/S & Action

Answer 12

NS: Radial n. (C6-8)
A: Extend forearm

Question 13

Biceps brachii - Attachments

Answer 13

PA: Long head – supraglenoid tube; Short head – coracoid process
DA: Radial tuberosity

Question 14

Biceps brachii - N/S & Action

Answer 14

NS: Musculocutaneous n. (C5-7)
A: Supination, GH flexion (when sup), elbow flexion

Question 15

Pectoralis Major - Attachments

Answer 15

PA: clavicle, sternum, sup 6 costal cartilages
DA: Lat. lip of Bicipital groove

Question 16

Pectoralis Major - N/S & Action

Answer 16

NS: Lateral/Medial pectoral ns. (C5-T1)
A: Adduct, IR humerus

Question 17

Pectoralis Minor - Attachments

Answer 17

PA: ribs 3-5
DA: coracoid process

Question 18

Pectoralis Minor - NS & Action

Answer 18

NS: medial pectoral n. (C8-T1)
A: scap stabilizer, accessory respiration

Question 19

Teres Major - Attachments

Answer 19

PA: inf angle of scap
DA: Med. lip of Bicipital groove

Question 20

Teres Major - NS & Action

Answer 20

NS: Lwr Subscapular n (C5-6)
A: IR, adduct humerus

Question 21

Latissimus Dorsi - Attachments

Answer 21

PA: SP’s T7-T12, iliac crest, T/L Fascia
DA: Floor of bicipital groove

Question 22

Latissimus Dorsi - NS & Action

Answer 22

NS: thoracodorsal n (C6-8)
A: adduct, extend, IR humerus

Question 23

Serratus Anterior - Attachments

Answer 23

PA: lateral ribs 1-8
DA: antero-medial scap border

Question 24

Serratus Anterior - NS &Action

Answer 24

NS: long thoracic n. (C5-7)
A: protraction, holds scap to tx wall

Question 25

Trapezius - Attachments

Answer 25

PA: C7-T12 SP’s, nuchal line & lig.
DA: lat 1/3 clavicle, acromion, spine of scap.

Question 26

Trapezius - NS & Action

Answer 26

NS: M: CN 11 (acc.) + S: C3/4 spinal ns.
A: Sup: Elevates scap.; Mid: Retracts scap.; Low: Depresses Scap

Question 27

Levator Scapulae - Attachments

Answer 27

PA: C1-C4 TP’s
DA: superior angle of scap.

Question 28

Levator Scapulae - NS & Action

Answer 28

NS: dorsal scapula (C5)
A: Sup: Elevates scap.

Question 29

Rhomboids (major & minor) - Attachments

Answer 29

PA: maj – T2-T5 SP’s; min – C7-T1 SP’s, nucal lig.
I: medial border scapula (minor above spine of scapula/major below spine of scapula)

Question 30

Rhomboids (major & minor) - NS & Action

Answer 30

NS: dorsal scapula (C4-5)
A: retraction of scapula