Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
49 Cards in this Set
- Front
- Back
Trapezius
origin: skull and thoracic vertebrae insertion: clavicle and scapula shape: trapezium - divided into 3 sections (a) descending convergent fibres, superior; (b) transverse fibres, middle; (c) ascending convergent fibres, inferior Layer: most superior layer of shoulder region Group: superficial posterior (shoulder) group Function: 1) descending part (superior) - elevate scapula 2) middle part - retracts scapula (pull posteriorly) 3) Ascending part (inferior) - descend scapula 4) ascending + descending = rotate glenoid cavity posteriorly |
Name the muscle
|
|
Rhomboid minor
origin: cervical and thoracic vertebrae insertion: medial border of scapula shape: flat, rhomboid; descending parallel fibres layer: superior to rhomboid major, under trapezius Group: superficial posterior (shoulder) group Function: retract scapula, rotate/depress glenoid cavity fix scapula to thoracic wall |
Name the muscle
|
|
Rhomboideus Major
origin: cervical and thoracic vertebrae insertion: medial border of scapula shape: flat, rhomboid; descending parallel fibres Group: superficial posterior (shoulder) group position: inferior to rhomboid minor, under trapezius Function: retract scapula, rotate/depress glenoid cavity fix scapula to thoracic wall |
Name the muscle
|
|
Levator Scapulae
origin: cervical vertebrae insertion: superior scapula group: superficial posterior (shoulder) group innervation: position: next to subscapularis, under trapezius joint: function: + descending parts of trapezius = elevate scapula/fix against thoracic wall extend neck (bilaterally with trapezius) contribute to lateral flexion of neck (unilateral contraction) |
Name the muscle
|
|
Latissimus Dorsi
origin: lumbar and thoracic vertebrae insertion: anterior proximal humerus group: superficial posterior group innervation: position: most superficial lower back muscle Function: extends, retracts and rotates the humerus medially (directly at glenohumeral joint; indirectly at pectoral girdle - clavicle, scapula, scapulothoracic joint) |
Name the muscle
|
|
Teres Major
origin: inferior angle of scapula (posterior surface) insertion: anterior proximal humerus group: superficial posterior (shoulder) group innervation: Axillary nerve blood supply: drain into: position: inferior to teres minor and infraspinatus, under or lateral to trapezius Function: adducts and medially rotates the arm, important stabilizer of humerus head in glenoid cavity |
Name the muscle
|
|
Teres Minor
origin: laterial border of scapula insertion: greater tubercle of humerus group: deep rotator cuff group; posterior innervation: axillary nerve blood supply: drain into: position: superior to teres major, under trapezius and superficial to infraspinatus joint: glenohumeral joint function: 1) dynamic ligament: keep head of humerus in socket and stabilize joint throughout wide range of movement 2) rotate humerus: lateral rotation (infraspinatus + teres minor) |
Name the muscle
|
|
Supraspinatus
origin: supraspinous fossa of scapula insertion: greater tubercle of humerus group: deep rotator cuff group innervation: position: above the spine of of scapula (as named), under trapezius (but both anterior and posterior) Function: 1) Dynamic ligament: keep head of humerus in socket and stabilize joint throughout wide range of movement 2) Assist abduction (away from midline) |
Name the muscle
|
|
Subscapularis
origin: subscapular fossa of scapula insertion: lesser tubercle of humerus group: deep rotator cuff group innervation: position: anterior; under rhomboid minor and pectoralis major Function: 1) Dynamic ligament - keep head of humerus in socket and stabilize joint throughout wide range of movement 2) rotate humerus - medial rotation (glenohumeral joint) |
Name the muscle
|
|
Infraspinatus
origin: infraspinous fossa of scapula insertion: greater tubercle of humerus group: deep rotator cuff group; posterior innervation: position: posterior below spine of scapula, below teres minor, superior to teres major Function: 1) Dynamic ligament - keep head of humerus in socket and stabilize joint throughout wide range of movement 2) rotate humerus - lateral rotation (infraspinatus + teres minor; glenohumeral joint) |
Name the muscle
|
|
Serratus Anterior
origin: ribs insertion: medial border of scapula group: anterior and lateral group (superficial) innervation: position: superficial layer (from back to side of front) |
Name the muscle
|
|
Pectoralis Minor
origin: 3 ribs (3-5) insertion: coracoid process of scapula group: anterior and lateral group innervation: position: under pectoralis major, superficial to subscapularis and intercostals (external) |
Name the muscle
|
|
Deltoid
origin: lateral clavicles, acromion, spine of scapula insertion: proximal, lateral humerus (deltoid tuberosity of humerus) group: anterior and lateral group innervation: Axillary nerve blood supply: drain into: position: most superficial proximal humerus and shoulder region; divided in three sections - clavicular (anterior; superior, next to pectoralis major), acromial (middle) and spinal (posterior, on top of infraspinatus) part. Cephalic vein in deltopectoral groove Function: 1) anterior (clavicular): flexes and medially rotates arm (glenohumeral joint) 2) middle ( acromial): abducts arm (away from midline) 3) posterior (spinal): extends and laterally rotates arm |
Name the muscle
|
|
Pectoralis Major
origin: sternum, rib cartilages, clavicle insertion: greater tubercle of humerus Group: superficial anterior and lateral group innervation: blood supply: drain into: position: most superficial anterior muscle, inferior to clavicle and deltoid muscle. Cephalic vein in deltopectoral groove. function: adducts and medially rotates humerus, draws scapula anteriorly and inferiorly |
Name the muscle
|
|
Biceps Brachii
origin: long head - supraglenoid tubercle of scapula; short head - coracoid process of scapula insertion: common - radial tuberosity (bicipital aponeurosis) group: flexor (anterior) arm group innervation: musculocutaneous nerve blood supply: brachial artery drain into: position: most superficial anterior arm function: 1) glenohumeral joint (long head only) flexion, stabilisation of humeral head during deltoid contraction; abduction of humerus 2) elbow joint (both long and short head) - flexor (forearm extended or supinated), supinator (forearm flexed and pronated) Note: no attachment to humerus |
Name the muscle
|
|
Coracobrachialis
origin: coracoid process of scapula insertion: medial margins of the humerus shaft group: flexor (anterior) arm group innervation: musculocutaneous nerve blood supply: brachial artery drain into: position: under biceps brachii, exposed at medial humerus close to armpit region Function: flex and adduct arm (glenohumeral joint), stabilise glenohumeral joint (shunt muscle) |
Name the muscle
|
|
Brachialis
origin: distal half of anterior surface of humerus insertion: ulnar tuberosity Group: flexor (anterior) arm group innervation: musculocutaneous nerve blood supply: brachial artery drains into: position: posterior and under biceps brachii, exposed close to lateral edge of humerus (close to lateral head of triceps brachii Function: ONLY pure flexor of the arm |
Name the muscle
|
|
Brachioradialis
origin: insertion: group: flexor arm (functional), extensor forearm (anatomical) compartment innervation: radial nerve blood supply: drains into: location: located anterior compartment of forearm (but actually flexor of arm) |
Name the muscle
|
|
Triceps Brachii (lateral head, long head, medial head)
origin: insertion: group: extensor arm innervation: radial nerve blood supply: deep brachial artery drain into: location: Function: |
Name the muscle
|
|
Anconeus
Origin: Insertion: Group: extensor arm group (functional), extensor forearm group (anatomical) innervation: radial nerve blood supply: drain into: Location: elbow, between extensor carpi ulnaris and flexor carpi ulnaris Function: |
Name muscle
|
|
Flexor Carpi Radialis
origin: medial epicondyle of humerus insertion: radial (lateral) palmar hand group: superficial anteriomedial (flexor) forearm innervation: median nerve blood supply: radial artery drain into: location: Function: |
Name the muscle
|
|
Flexor Carpi Ulnaris
origin: medial epicondyle of humerus insertion: Group: superficial flexor (anteriomedial) forearm innervation: ulna nerve blood supply: ulnar artery drain into: location: Function: |
Name the muscle
|
|
Palmaris Longus
Origin: medial epicondyle of humerus Insertion: Group: superficial flexor (anteriomedial) forearm Innervation: median nerve blood supply: ulna artery drain into: location: most superficial forearm muscle |
Name the muscle
|
|
Pronator Teres
origin: medial epicondyle of humerus insertion: Group: superficial flexor (anteriomedial) forearm Innervation: median nerve blood supply: drain into: location: Function: |
Name the muscle
|
|
Flexor digitorum superficialis
origin: medial epicondyle of humerus insertion: middle phalanges of digits 2-5 group: anteriomedial (flexor) compartment of forearm innervation: median nerve supply: ulna artery drain: location: intermediate layer of forearm, tendons reach edges of middle phalanges Function: weak flexor of elbow, flexor of wrist, MCP, and PIP joints of digits 2-5 |
Name the muscle
|
|
flexor digitorum profundus
origin: insertion: group: deep anteriomedial (flexor) of forearm innervation: median nerve (radial side), ulna nerve (ulna side) blood supply: ulnar artery drain into: location: deep layer, directly beneath flexor digitorum superficialis, tendons reach proximal edge of dital phalanges (digits 2-5) Function: flexor of wrist, MCP, PIP and DIP of digits 2-5 Note: ONLY flexor of distal phalanges |
name
|
|
flexor pollicus longus
origin: insertion: group: deep flexor (anteriomedial) forearm innervation: median nerve blood supply: radial artery drain into: location: Function: |
name
|
|
pronator quadratus
Origin: Insertion: Group: deep anteriomedial (flexor) forearm innervation: median nerve blood supply: drain into: location: Function: |
name
|
|
Extensor Carpi Ulnaris
origin: insertion: group: superficial extensor (posteriolateral) forearm innervation: radial nerve blood supply: drain into: location: Function: |
Name the muscle
|
|
Extensor Carpi Radialis Brevis
Origin: Insertion: Group: superficial extensor (posteriolateral) forearm innervation: radial nerve blood supply drain into: location: Function: |
Name the muscle
|
|
Extensor Carpi Radialis Longus
origin: insertion: group: superficial extensor (posteriolateral) forearm innervation: radial nerve blood supply: drain into: location: Function: |
Name the muscle
|
|
Extensor Digitorum
origin: insertion: group: superficial extensor (posteriolateral) forearm innervation; radial nerve |
Name the muscle
|
|
extensor digiti minimi
origin: Insertion: group: extensor forearm group innervation: radial nerve blood supply: drain into: location: tendon under extensor carpi ulnaris (intersect at wrist), between extensor capi ulnaris and extensor digitorum (muscle, elbow region) Function: extend wrist |
name
|
|
Supinator
origin: insertion: group: deep extensor (posteriolateral) forearm innervation: radial nerve blood supply: drain into: location: Function: |
Name the muscle
|
|
extensor pollicis brevis
origin: dorsal shaft of radius (and ulna), interosseous membrane insertion: mid thumb group: deep extensor forearm group innervation: radial nerve blood supply: drain into: location: under abductor pollicis longus, origin more distal and tendon more posterior (thumb) than abductor pollicis longus. Deepest layer on radius. Function |
Brevis
|
|
extensor pollicis longus
origin: dorsal shaft of ulna (and radius) and interosseous membrane insertion: tip of thumb group: deep extensor forearm innervation: radial nerve blood supply: drain into: location: tendon ends further than extensor pollicis brevis, under extensor digitorum, origin on ulna (medial to adductor pollicis longus origin) and cross at wrist, medial to adductor pollicis longus, lateral and partly superficial to extensor indicis Function: |
Longus
|
|
Abductor pollicis longus
origin: posterior shaft of radius and ulna, interosseous membrane insertion: near base of thumb (metacarpal) group: deep extensior (posterior) forearm innervation: radial nerve blood supply: drain into: location: from posterior radius to anterior thumb, crosses (and lateral to) extensor pollicis brevis, distal to supinator Function: |
name
|
|
Extensor indicis
origin: insertion: group: deep extensor forearm innervation: radial nerve blood supply: drain into: location: Function: |
name
|
|
opponens pollicis
innervation: median nerve |
opponens pollicis
|
|
abductor pollicis brevis
innervation: median nerve |
name
|
|
flexor pollicis brevis
innervation: median nerve |
flexor pollicis brevis
|
|
adductor pollicis
innervation: median nerve |
adductor pollicis
|
|
opponens digiti minimi
innervation: ulna nerve |
opponens digiti minimi
|
|
abductor digiti minimi brevis
innervation: ulna nerve |
abductor digiti minimi brevis
|
|
flexor digiti minimi brevis
innervation: ulna nerve |
flexor digiti minimi brevis
|
|
palmaris brevis
innervation: ulna nerve |
palmaris brevis
|
|
palmar interossei
innervation: ulna nerve |
name
|
|
dorsal interossei
innervation: ulna nerve |
name
|
|
lumbricals
Innervation: median nerve (1,2), ulna nerve (3,4) |
Lumbricals
|