Anatomy Test 1 Insertions, Origins, Actions

Front 1

Trapezius + innervation/blood supply

Back 1

Origin: external occipital protuberance, superior nuchal line, nuchal ligament, thoracic vertebrae

Insertion: clavicle, spine and acromion of scapula

Action: suspends shoulder, adducts scapula, rotates scapula

Innervation: spinal accessory nerve (CNX)
Blood supply: transverse cervical artery

Front 2

Latissimus Dorsi + innervation

Back 2

O: lower thoracic, lumbar and sacral vertebrae, lower ribs, ilium

I: medial lip of the intertubercular groove of the humerus

A:extends, adducts, and rotates arm medially

Innervation: thoracodorsal nerve

Front 3

Levator scapulae + innervation

Back 3

O: upper cervical vertebrae

I: superior angle of the scapula

A: raises scapula

Innervation: dorsal scapular nerve (from brachial plexus)

Front 4

Rhomboid major and minor + innervation

Back 4

O: upper thoracic vertebrae

I: medial border of scapula

A: adducts and raises scapula

Innervation: dorsal scapular nerve

Front 5

Serratus posterior superior + innervation

Back 5

O: upper thoracic vertebrae

I: ribs 2-5

A: elevates upper ribs

Innervation: intercostal nerves

Front 6

Serratus posterior inferior + innervation

Back 6

O: lower thoracic and upper lumbar vertebrae

I: lower 4 ribs

A: depresses lower ribs

Innervation: intercostal nerves

Front 7

2 extensor/rotators of the neck

Back 7

splenius capitis

semispinalis capitis

Front 8

extensor and rotators of the back

Back 8

Erector spinae (iliocostalis, longissimus, spinalis

Transversospinalis division
multifidi and rotators

Front 9

Deltoid + innervation

Back 9

O: clavicle, acromion, spine of scapula

I: deltoid tuberosity of humerus

A: flexes and medially rotate humerus (ant. portion); abducts humerus (intermediate portion); extends and laterally rotates humerus (posterior portion)

Innervation: axillary nerve

Front 10

Supraspinatus + innervation

Back 10

O: supraspinous fossa of scapula

I: greater tubercle of humerus

A: stabilizes shoulder joint; abducts humerus

Inn: suprascapular nerve

Front 11

infraspinatus + innervation

Back 11

O: infraspinous fossa of scapula

I: greater tubercle of humerus

A: stabilizes shoulder joint; laterally rotates humerus at shoulder

Inn: suprascapular nerve

Front 12

teres minor + innervation

Back 12

O: lateral(axillary border of scapula

I: greater tubercle of humerus

A: stabilizes shoulder joint; laterally rotates humerus at shoulder

Inn: axillary nerve

Front 13

teres major + innervation

Back 13

O: dorsal surface of lateral border of scapula, close to inferior angle

I: immediately posterior to the latissimus dorsi attachment on the medial lip of the intertubercular suluc

A: adducts, extends, and medially rotates humerus at shoulder

Inn: lower subscapular nerve

Front 14

triceps (long head) + innervation

Back 14

O: infraglenoid tubercle of scapula

I: olecranon process of ulna

Inn: radial nerve

A: extends and adducts humerus at shoulder; with other two heads, will extend forearm at elbow

Front 15

subscapularis + innervation

Back 15

O: subscapular fossa (ventral surface of scapula)

I: lesser tubercle of humerus

A: stabilizes shoulder joint; medially rotates and adducts humerus at the shoulder

Inn: upper and lower subscapular nerves

Front 16

Quadrangular space is bound by these

what nerve/ artery pass through?

Back 16

Teres minor, major, long head of triceps, and the neck of the humerus

axillary nerve and posterior humeral circumflex artery

Front 17

Triangular interval is bound by these

what nerve and artery pass through?

Back 17

teres major, the long head of triceps, body of humerus

radial nerve and profunda brachii artery

Front 18

abducts the arm/humerus

Back 18

intermediate portion of deltoid, supraspinatus

Front 19

adducts the arm

Back 19

latissimus dorsi, teres major, triceps (long head), subscapularis, pectoralis major, coracobrachialis

Front 20

extends the arm

Back 20

latissimus dorsi, posterior portion of deltoid, teres major, triceps (long head)

Front 21

flexes humerus

Back 21

anterior portion of deltoid, biceps brachii, coracobrachialis

Front 22

laterally rotates arm/ humerus

Back 22

posterior portion of deltoid, infraspinatus, teres minor

Front 23

medially rotate arm

Back 23

latissimus dorsi, anterior portion of the deltoid, teres major, subscapularis, pectoralis major

Front 24

extends forearm at elbow

Back 24

triceps (all 3 heads)

Front 25

flex forearm at elbow

Back 25

biceps brachii, brachialis

Front 26

supinasion

Back 26

biceps brachii

Front 27

depresses lower ribs

Back 27

serratus posterior inferior

Front 28

elevates upper ribs

Back 28

serratus posterior superior

Front 29

adducts scapula

Back 29

trapezius, rhomboid major and minor

Front 30

anterior scapula movement

Back 30

pectoralis minor, serratus anterior, subclavius

Front 31

inferior shoulder movement

Back 31

subclavius, serratus anterior (inferior scapula movement)

Front 32

raises scapula

Back 32

levator scapulae, rhomboid major and minor, trapezius (suspends shoulder)

Front 33

rotates scapula

Back 33

trapezius, serratus anterior

Front 34

stabilizes clavicle

Back 34

subclavius

Front 35

stabilizes shoulder joint

Back 35

supraspinatus, infraspinatus, teres minor, subscapularis

Front 36

innervated by spinal accessory nerve (CN XI)

Back 36

trapezius

Front 37

thoracodorsal nerve

Back 37

latissimus dorsi

Front 38

dorsal scapular nerve

Back 38

levator scapulae, rhomboid major, rhomboid minor

Front 39

intercostal nerves

Back 39

serratus posterior superior, serratus posterior inferior

Front 40

DPR

Back 40

semispinalis capitis, splenius capitis, iliocostalis, longissimus, spinalis (erector spinae), multifidi/rotators of the transversospinalis

Front 41

axillary nerve

Back 41

deltoid, teres minor

Front 42

suprascapular nerve

Back 42

supraspinatus, infraspinatus

Front 43

lower subscapular nerve

Back 43

teres major, subscapularis**

Front 44

radial nerve

Back 44

triceps (long head)

Front 45

musculocutaneous

Back 45

coracobrachialis, biceps brachii, brachialis

Front 46

upper subscapular nerves

Back 46

subscapularis**

Front 47

lateral pectoral nerves

Back 47

pectoralis major

Front 48

medial pectoral nerves

Back 48

pectoralis major, pectoralis minor

Front 49

long thoracic nerve

Back 49

serratus anterior

Front 50

brachial plexus branch

Back 50

subclavius

Front 51

Pectoralis minor + innervation

Back 51

O: ribs 3-5
I: coracoid process of scapula
A: moves scapula anteriorly around the chest wall (with serratus anterior)

Inn: medial pectoral nerve

Front 52

pectoralis major + innervation

Back 52

O: clavicle, sternocostal and abdominal origin

I: lateral lip of intertubercular groove

A: adducts and medially rotates humerus

Inn: lateral and medial pectoral nerve

Front 53

Serratus anterior + innervation

Back 53

O: ribs 1-8

I: anterior surface of medial border of scapula

A: rotates the inferior angle of the scapula superiorly, pulls scapula anteriorly and inferiorly

Inn: long thoracic nerve

Front 54

Subcalvius + innervation

Back 54

O: first rib

I: inferior surface of clavicle

A: stabilizes clavicle; pulls shoulder downward and forward

Inn: branch of brachial plexus

Front 55

Coracobrachialis + innervation

Back 55

O: coracoid process of scapula

I: medial aspect of middle of humerus

A: flex and adduct arm

Inn: musculocutaneous nerve

Front 56

Biceps brachii + innervation

Back 56

O: coracoid process of scapula (short head), supraglenoid tubercle of scapula (long head)

I: radial tuberosity

A: flexion at shoulder and elbow, supination

Inn: musculocutaneous

Front 57

brachialis + innervation

Back 57

O: lower, anterior humerus

I: coranoid process of ulna

A: flexion at elbow

Inn: musculocutaneous nerve

Front 58

triceps brachii + innervation

Back 58

O: infraglenoid tubercle (long head) posterior humerus (medial and lateral heads)

I: olecranon process of ulna

A: extension at elbow/long head, can extend and adduct at the shoulder

Inn: radial nerve

Front 59

makes up the triangular space

what passes through it?

Back 59

teres major, teres minor, long head of tricep

circumflex scapular artery

Front 60

Median N. affects

Back 60

flexors and the wrist, pronation
opposition of thumb

flexion of digits 1,2 &3
cutaneous sensation of 1, 2, 3, and lateral 1/4 of 4

Front 61

Radial N. innervates

Back 61

extensors and posterior cutaneous sensation of arm/forearm/hand

supinator muscle

Front 62

Ulnar N. affects

Back 62

flexion of digits 4 and 5

cutaneous sensation of 5 and medial 1/2 of 4

intrinsic muscles of hand

Front 63

Axillary N. innervates

Back 63

deltoid and teres minor

Front 64

musculocutaneous N. innervates

Back 64

flexors of the arm and antebrachium