MSK-Upper Limb Flashcards by Lauren Tomkins

anterior wall of the axilla

pectorals major and minor

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posterior wall of the axilla

subscapularis, trees major and latissimus dorsi

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medial wall of the axilla

thoracic wall, serrates anterior

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Lateral wall of the axilla

humerus, coracobrachialis, short head of biceps

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where does the axillary artery become the brachial

lower border of the teres minor

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which artery runs deeper- radial or ulna?

ulna

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describe the superficial venous system in the arm

you have the basilic cephalic vein. Basillic becomes the axillary and the cephalic drains into the axillary. Also a shunt that shunts blood from the cephalic to the basilic.

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what type of joint is the sternoclavicular. joint

saddle synovial joint

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what type of joint is the acromioclavicular joint

synovial plane joint

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role of the coracoacromial ligament

presents superior displacement of the humeral head

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role of the glenohumeral ligament

strengthen the anterior aspect of the joint capsule

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what are the 2 main bursa found around the shoulder

subacromial bursa

sbuscapular bursa

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role of bursa in the shoudler

help prevent wear and tear on tendons

reduce friction

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what muscles elevate the scapula

trapezius and levator scapulae

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what muscles depress the scapula

trapezius

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what muscles are involved in protraction of the scapula

serratus anterior, pectoralis major and minor

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what muscles are involved in retraction of the scapula

middle fibres of trapezius

rhomboids

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what muscles are involved in lateral rotation fo the scapula

trapezius

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what muscles are involved in medial rotation of the scapula

levator scapula, rhomboid, pectoralis minor

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actions of the trapezius

elevation and depression of the scapula, retraction and lateral rotation of the scapula.
flexion and extension of the spine

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innervation of the trapezius

accessory nerve

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latissimus dorsi actions

adducts, medially rotates and extends the arm

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Actions of the levator scapulae

elevates the scapula

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where do we find the rhomboids

attached to the medial border of the scapula and the spine

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action of the rhomboids

retract the scapula

where does the pectoralis major attatch

lateral lip of the bicipital groove

actions of the pectoralis major

adduct the shoulder protract the scapula internally rotate the arm

action of the pectoralis minor

stabilises the scapular during limb movements by keeping it pulled up against the thoracic cage. protraction of the scapula

actions of the serratus anterior

protraction of scapula stabilises the pectoral girdle by holding the scapula closer to the ribs

main action of the deltoid

abduction

what are the actions of the various fibres of the deltoid

lateral- abduction posterior- extension and lateral rotation anterior- flexion and medially rotate

action of the Supraspinatus

abduction | stabiliser

action of the infraspinatus

lateral rotator abduction stabaliser

action of teres minor

adduction and lateral rotation | stabaliser

action of the subscapularis

Adduction and medial rotation

what are the rotator cuff muscles

Supraspinatus infraspinatous teres minor subscapularis

where does teres major insert

posterior lip of the bicipital groove

what muscles are involved in shoulder flexion

deltoid pectoralis major coracobrachialis

what muscles are involved in shoulder extension

deltoid latissimus dorsi teres major and minor

what muscles are involved in shoulder adduction

pectoralis major latissimus dorsi teres major subscapularis

what muscles are involved in abduction 0-90 of the shoulder

deltoid | Supraspinatus

what muscles are involved in the later stages of abduction in the shoulder

trapezius | serratus anterior

what muscles are involved in medial rotation

subscapularis latissimus dorsi pec major teres major

what muscles are involved in lateral rotation

infraspinatus teres minor deltoid

where do the heads of the triceps arise from

lateral head- humerus medial head- humerus long head- infraglenoid tubercle

where does the common tendon of the triceps insert into

olecranon process

action of triceps

extensor

innervation of triceps

radial nerve

where does the short head of the biceps originate from

coracoid process

where does the long head of the biceps originate from

supraglenoid tubercle

action of the biceps

flexion and supination

what muscles are found in the anterior compartment of the arm

biceps brachii coracobrachialis brachialis

what supplies the brachioradialis

radial nerve

action of the brachioradialis

flexor and partial pronator and supinator

what are the three main ligaments of the elbow

medial and lateral collateral ligaments | annular ligament

what ligament merges with the annular ligament

radial (lateral) collateral ligament

what kind of structure is the interossues membrane

fibrous structure

what is the function of the interossues memrane between the ulna and radius

adds stability | lax enough to allow supination and pronation

what muscles are involved in flexion of the wrist

``` those in the anterior compartment- FCR FCU palmaris longus FDS FDP ```

what muscles are flexors in the forearm

brachioradialis FCR Palmaris longus FCU

what muscles are adductors of the wrist

FCU and ECU

what is ulnar deviation

adduction of the wrist

what is radial deviation

abduction of the wrist

what muscles are abductors of the wrist

FCR, ECR

where does the FDS insert

middle phalanges

what muscle gives rise to the lumbricals

FDP

action of the FPL

flexes the thumb

attachement sites of the FPL

radius and the thumb

what are the contents of the carpal tunnel

4 FDS tendons 4 FDP tendons 1 FPL tendon median nerve

what muscles are involved in extension of the wrist

ECU ECRB ECRL extensor digitorum slightly

action of the extensor digiti minimi

extends the little finger

action of the extensor indices

extends the index finger

what muscles extend the thumb

EPL | EPB

what muscles abduct the thumb

APL

what forms the floor of the anatomical snuff box

Scaphoid and trapezium

what muscles are in the thenar compartment of the hand

APB FPB OP

what muscles are in the hypothenar compartment of the hand

abductor digiti minimi flexor digiti minimi opponens digiti minimi

what muscles are in the central compartment of the hand

FDS FDP Flexor policis longus lumbricals

how many palmar interossei are there

how many dorsal interossei are there

what carpal bones is the retinulacum attached to

scaphoid and trapezium, pisiform, hamate