Quiz 1 Flashcards
Origin of descending head/transverse part/ascending head of trapezius muscle
Superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous processes of C7-T12
Insertion of descending head/transverse part/ascending head of trapezius muscle
Lateral 1/3 clavicle + acromion + spine of scapula
Innervation of descending head/transverse part/ascending head of trapezius muscle
Motor by spinal accessory nerve and proprioception nerve
Spinal levels of descending head/transverse part/ascending head of trapezius muscle
C3, C4 + spinal part of cranial nerve IX
Action of descending head of trapezius muscle
Depress scapula
Action of transverse part of trapezius muscle
Retract scapula
Action of ascending head of trapezius muscle
Elevate scapula
Origin of latissimus dorsi
Thoracolumbar fascia, spinous processes T6-T12, 5th lumbar vertebrae, sacrum, iliac crest, last 3-4 ribs
Insertion of latissimus dorsi
Floor of intertubercular groove of humerus
Innervation of latissimus dorsi
Thoracodorsal nerve (middle subscapular)
Spinal levels of latissimus dorsi
C6, C7, C8
Action of latissimus dorsi
Adduction, extension, and medial rotation of the humerus
Origin of rhomboid major
Spinous processes of T2-T5 of thoracic vertebrae
Insertion of rhomboid major
Medial border of scapula between the spine + inferior angle
Innervation of rhomboid major
Dorsal scapular nerve
Spinal levels of rhomboid major
C4 + C5
Action of rhomboid major
Retraction of scapula elevation medial border of scapula
Origin of rhomboid minor
Spinous processes C7-T1
Insertion of rhomboid minor
Scapular spine + superior angle of the scapula
Innervation of rhomboid minor
Dorsal scapular nerve
Spinal levels of rhomboid minor
C4 + C5
Action of rhomboid minor
Retraction of the scapula, elevation of medial border of scapula
Origin of levator scapulae
Posterior tubercles of TVP’s for C1-C3 or C4
Insertion of levator scapulae
Superior angle of scapula
Innervation of levator scapulae
Dorsal scapular nerve + ventral rami C3-C4
Spinal levels of levator scapulae
C3, C4, C5
Actions of levator scapulae
-downward rotation of glenoid cavity of scapula
-elevates + retracts scapula with trapezius
-laterally flexes neck if scapula is fixed
Origin of anterior head of deltoid
Lateral 1/3rd of clavicle
Origin of middle head of deltoid
Acromion
Origin of posterior head of deltoid
Spine of the scapula
Insertion of deltoid
Deltoid tuberosity of humerus
Innervation of deltoid
Axillary nerve
Spinal levels of deltoid
C5 + C6
Action of anterior head of deltoid
Flexes + medically rotates humerus
Action of middle head of deltoid
Abduction of humerus after the first 15 degrees
Action of posterior head of deltoid
Extends + laterally rotates humerus
Origin of teres major
Lower lateral border + inferior angle of scapula
Insertion of teres major
Medial lip of the inter-tubercular groove
Innervation of teres major
Lower subscapular nerve
Spinal levels of teres major
C5 + C6
Action of teres major
Adducts + medically rotates humerus
Origin of teres minor
Middle part of the lateral border of the scapular
Insertion of teres minor
Inferior facet of the greater tubercle
Innervation of teres minor
Axillary nerve
Spinal levels of teres minor
C5 + C6
Action of teres minor
Lateral rotation of the humerus
Origin of infraspinatus
Infraspinatus fossa of scapula
Insertion of infraspinatus
Middle facet of greater tubercle
Innervation of infraspinatus
Suprascapular nerve
Spinal levels of infraspinatus
C5 + C6
Action of infraspinatus
Lateral rotation of the humerus
Origin of supraspinatus
Supraspinatus fossa of the scapula
Insertion of supraspinatus
Superior facet of greater tubercle
Innervation of supraspinatus
Suprascapular nerve
Spinal levels of supraspinatus
C4, C5, + C6
Action of supraspinatus
Initiates abduction of the humerus at gelnohumeral joint, laterally rotates humerus when decelerating the arm in a throwing motion
Origin of subscapularis
Subscapular fossa scapula
Insertion of subscapularis
Lesser tubercle humerus
Innervation of subscapularis
Upper + lower subscapular nerve
Spinal levels of subscapularis
C5, C6, + C7
Action of subscapularis
Medial rotation of humerus
How many roots are in the brachial plexus?
5 roots
how many trunks are in the brachial plexus?
3
how many divisions are in the brachial plexus?
6
how many cords are in the brachial plexus?
3
how many terminal branches are in the brachial plexus?
5
triangular space
the space that is created by the teres minor, teres major, and long head of the triceps
what are the contents in the triangular space?
circumflex scapular artery
quadrangular space
the space that is created by the teres minor, teres major, long head of the tricpes, and lateral head of the triceps
what are the contents of the quadrangular space?
axillary nerve and the posterior humeral circumflex artery
triangular interval
the space that is created by teres major, the lateral head of the triceps, and the long head of the triceps
what are the contents of the triangular interval?
radial nerve and the profunda (deep) brachii artery
how many parts are there in the axillary artery?
3
where is the first part of the axillary artery in relation to its origin?
most proximal; closest
where is the third part of the axillary artery in relation to its origin?
most distal; farthest
what are the branch(es) of the first part of the axillary artery?
superior thoracic artery
what are the branch(es) of the second part of the axillary artery?
thoracoacromial artery and lateral thoracic artery
what are the branch(es) of the third part of the axillary artery?
subscapular artery, anterior humeral circumflex artery, and posterior humeral circumflex artery
foerster dermatome mapping
clinical mapping. thicker bands
keegan + garrett dermatome mapping
embryological mapping. thinner, more narrow bands
what roots become the superior/upper trunk in the brachial plexus?
C5 and C6 nerve
what roots become the middle trunk in the brachial plexus?
C7 nerve
what roots become the inferior/lower trunk in the brachial plexus?
C8 and T1 nerves
what divisions become the lateral cord of the brachial plexus?
the C5/C6 anterior division and the C7 anterior division
what divisions become the medial cord of the brachial plexus?
the C8/T1 anterior division
what divisions become the posterior cord of the brachial plexus?
the C5/C6 posterior division, C7 posterior division, and theC8/T1 posterior division
what cord does the terminal branch, musculocutaneous nerve, come from?
lateral
what cord does the terminal branch, axillary nerve, come from?
posterior
what cord does the terminal branch, radial nerve, come from?
posterior
what cord does the terminal branch, median nerve, come from?
the lateral and medial cords come together to form the median nerve
what cord does the terminal branch, ulnar nerve, come from?
medial
deltopectoral triangle
the space that is created by the deltoid, pectoralis major, and clavicle
what runs through the deltopectoral triangle?
cephalic vein, thoracoacromial trunk a, and lateral pectoral n
what is another name for the deltopectoral triangle?
clavipectoral triangle
origin of triceps long head
infraglenoid tubercle of scapula
insertion of triceps long head
olecranon process of ulna
action of triceps long head
stabilizes glenohumeral joint, extends forearm @ elbow, extends humerus @ glenohumeral joint
innervation of triceps long head
radial nerve
spinal levels of triceps long head
C7
origin of triceps lateral head
posterior lateral surface of the humerus
insertion of the triceps lateral head
olecranon process of ulna
action of triceps lateral head
extends forearm @ elbow + extends humerus @ glenohumeral joint
innervation of tricpes lateral head
radial nerve
spinal levels of triceps lateral head
C6
origin of triceps medial head
posterior/lateral surface of the humerus
insertion of the triceps medial head
olecranon process of ulna
action of triceps medial head
extends forearm @ elbow + extends humerus @ glenohumeral joint
innervation of triceps medial head
radial nerve
spinal level of triceps medial head
C8
origin of biceps brachii short head
coracoid process of scapula
insertion of biceps brachii short head
radial tuberosity + bicipital aponeurosis
action of biceps brachii short head
primary forearm flexor (w/supination), flexes forearm w/elbow extended, and primary supinator (w/pronation)
innervation of biceps brachii short head
musculocutaneous n.
spinal levels of biceps brachii short head
C5/C6
origin of biceps brachii long head
supraglenoid tubercle of scapula
insertion of biceps brachii long head
radial tuberosity + bicipital aponeurosis
action of biceps brachii long head
stabilizes glenohumeral joint, primary forearm flexor, and primary supinator
innervation of the biceps brachii long head
musculocutaneous n
spinal levels of biceps brachii long head
C5/C6
origin of brachialis
distal half of anterior humerus
insertion of brachialis
ulnar tuberosity + anterior coronoid process
action of brachialis
flexes forearm @ elbow from ANY position. primary elbow flexor
innervation of brachialis
musculocutaneous n
spinal levels of brachialis
C5/C6/C7
origin of coracobrachialis
coracoid process of scapula
insertion of coracobrachialis
medial middle humerus
action of coracobrachialis
flex + adduct humerus @ glenohumeral joint
innervation of coracobrachialis
musculocutaneous n
spinal level of coracobrachialis
C5/C6/C7
origin of subclavius m
superior surface of costal end of 1st rib
insertion of subclavius m
inferior surface of the middle third of clavicle
action of subclavius m
stabilizes clavicle
innervation of subclavius m
n to subclavius muscle
spinal level of subclavius m
C5/C6
insertion of longus coli
anterior C3-T3 vertebrae
insertion of longus coli m
anterior C1-C6 vertebrae
action of longus coli m
flexes + rotates neck @ cervical vertebral joints
innervation of longus coli m
anterior rami of C2-C6
origin or serratus anterior
external surfaces of ribs 1-9
insertion of serratus anterior m
medial border of scapula
action of serratus anterior m
protract + upwardly rotate pectoral girdle at AC + SC joints
innervation of serratus anterior m
long thoracic n
spinal levels of serratus anterior m
C5/C6/C7
origin of scalenus anterior m
anterior tubercles of C3-C6 vertebrae transverse processes
insertion of scalenus anterior m
scalene tubercle of first rib
innervation of scalenus anterior m
anterior rami of C4-C6 n
action of scalenus anterior m
flexes, rotates, + laterally flexes neck. elevates first rib
origin of scalenus medius m
transverse processes of C2-C7 vertebrae
insertion of scalenus medius m
superior surface of first rib
action of scalenus medius m
laterally flexes neck. elevates first rib
innervation of scalenus medius m
anterior rami of C3-C8 n
origin of scalenus posterior m
posterior tubercles of transverse processes of C4-C6 vertebrae
insertion of scalenus posterior m
external surfaces of second rib
action of scalenus posterior m
laterally flexes neck. elevates second rib
innervation of scalenus posterior m
anterior rami of C4-C6
origin of pectoralis major m
clavicular head, anterior medial half of clavicle, sternocostal head, manubrium, sternal body, true ribs + costal cartilage, external abdominal oblique aponeurosis
insertion of pectoralis major m
crest of greater tubercle of humerus
action of pectoralis major m
adducts, medially rotates, + transversely adducts arm at GH joint. depress pectoral girdle at AC + SC joints
innervation of pectoralis major m
medial + lateral pectoral n
origin of pectoralis minor m
anterior ends of ribs 3-5
insertion of pectoralis minor m
coracoid process of scapula
action of pectoralis minor m
protracts + downwardly rotates pectoral girdle at AC + SC joints
innervation of pectoralis minor m
medial + lateral pectoral n
what kind of joint is the sternoclavicular joint?
synovial/plane-pivot + acts like ball and socket
what kind of joint is the costoclavicular joint?
syndesmosis/amphiarthrosis
what kind of joint is the acromioclavicular joint?
synovial/plane
what kind of joint is the coracoclavicular joint?
syndesmosis/amphiarthrosis
what kind of joint is the scapular thoracic joint?
physiological/plane glide
what kind of joint is the glenohumeral joint?
synovial/ ball + socket