Kin 100 midterm (L4 scapula landmarks - 9 distal radioulnar)

continue from page 17 lecture 5 latissimus dorsi

what is label #1

acromion

what is label #2

coracoid process

what is label #3

glenoid fossa/cavity

what is label #4

subscapular fossa

what is label #5

spine

what is label #6

supraspinous fossa

what is label #7

infraspinous fossa

what is label #8

subscapular notch

how is the scapula held in place

by muscles

what type of bone is the humerus

a long bone

what is label #1

head

what is label #2

anatomical neck

what is label #3

surgical neck

what is label #4

greater tubercle

what is label #5

lesser tubercle

what is label #6

intertubercular sulcus or bicipital groove

what is label #7

deltoid tuberosity

what is label #8

lateral lip of bicipital groove

what is label #9

floor of bicipital groove

what is label #10

medial lip of bicipital groove

what is an intrinsic ligaments

thickenings of the joint capsule

what is an extrinsic ligament

a supporting ligament for a joint located some distance away from the joint capsule

what type of joint is the sternoclavicular joint

saddle joint

what are the articulations of the sternoclavicular joint

the sternal end of the clavicle articulates with the manubrium

what is label #1

articular disc

what is label #2 and its classification

anterior sternoclavicular ligament

intrinsic ligament

what is label #3 and its classification

interclavicular ligament

extrinsic ligament

what is label #4 and its classification

costoclavicular ligament

extrinsic ligament

during abduction of the arm, what is the approximate angle the clavicle elevates

60 degrees

what movements can the sternoclavicular joint preform

elevation, depression, protraction, retraction and posterior rotation

does the sternoclavicular joint dislocate

very rarely, normally the clavicle will fracture before

what are the articulations of the acroioclavicular joint

the acromion articulates with the acromial end of the clavicle

what type of joint is the acromioclavicular joint

plane

what is label #1 and its classification

acromioclavicular ligament

intrinsic ligament

what is label #2

coracoid process

what is label #3 and its classification

trapezoid ligament

extrinsic ligament

what is label #4 and its classification

conoid ligament

extrinsic ligament

what is label #5 and its classification

coracoclavicular ligament

extrinsic ligament

in layman’s terms what does the dislocation of the acromioclavicular joint refer to

dislocated shoulder

what is the articulations of the glenohumeral joint

the head of humerus articulates with the glenoid cavity/fossa

what type of joint is the glenohumeral joint

ball and socket

what actions can the glenohumeral joint preform

full abduction of the arm

what is label #1

head of humerus

what is label #2

glenoid cavity/fossa

what is label #3

glenoid labrum

what is label #1 and its classification

glenohumeral ligament

intrinsic ligament

what is label #2 and its classification

coracohumeral ligament

intrinsic ligament

what is label #3 and its classification

transverse humeral ligament

intrinsic ligament

what is label #4 and its classification

coracoacromial ligament

extrinsic ligament

what makes up the coracromial arch

the coracoid process, coracoacromial ligament and the acromionm

what are the 3 types of shoulder dislocations

posterior, anterior and interior

what is the most common type of shoulder dislocation

inferior

does the scapula have direct attachment to the ribcage

no

for every ___ degrees of rotation, ____ comes from the glenohumeral joint and _____ from the scapulothoracic joint

3, 2, 1

what does scapula movement contribute to

extreme flexion and abduction of the humerus

what are axio-appendicular muscles

muscles that attach the appendicular skeleton to the axial skeleton

what are the muscle groups under axio-appendicular muscles

anterior axio-appendicular muscles and posterio axio-appendicular muscles

name the 4 anterior axio-appendicular muscles

pectoralis major

pectoralis minor

subclavius

serratus anterior

name the 4 posterior axio-appendicular muscles

trapezius

latissimus dorsi

levator scapula

rhomboid major and minor

what are the proximal and distal attachment(s) for pectoralis major

proximal: sternum and medial clavical

distal: lateral lip of bicipital groove

what are the inntervation(s) of pectoralis major

the medial and lateral pectoral nerves

what actions preformed by pectoralis major, and what heads preform them

shoulder flexion:clavicular head

shoulder extension: sternal head

should adduction: both heads

shoulder internal/medial rotation: both heads

pectoralis minor lies ____ to pectoralis major

deep

what is the proximal and distal attachment(s) for pectoralis minor

proximal: ribs 3-5

distal: coracoid process

what are the innervation(s) of pectoralis minor

the medial pectoral nerve

what actions does pectoralis minor preform or assit with

respiration assistents

stabilizing and pinning scapula against the ribcage

what is the proximal and distal attachment(s) for subclavius

proximal: 1st rib and 1st costal cartilage

distal: inferior surface of the clavicle

what are the innervation(s) of subclavius

nerve to subclavius

what actions are preformed by subclavius

anchoring and depressing the clavicle

what is the proximal and distal attachment(s) for serratus anterior

proximal: lateral surface of ribs 1-8

distal: medial border of the scapula

what are the innervation(s) of serratus anterior

long thoracic nerve

what action does serratus anterior preform

protraction of scapula

what is the proximal and distal attachment(s) for trapezius

proximal: base of skull, nuchal ligament and spinous process of throacic vertebrae

distal: lateral clavicle, acromion and spine of scapula

what are the innervation(s) of trapezius

accessory nerve/cranial nerve XI

what actions are preformed by trapezius, and what fibers allow so

scapula elevation: upper fibers

scapula retraction: middle fibres

scapula depression: lower fibers

rotating glenoid cavity/fossa upwards: upper and lover fibers

what is the proximal and distal attachment(s) for latissimus dorsi

proximal: spinous process of T6-T12 vertebrae, thoracolumbar fascia, iliac crest

distal: floor of the biciptial groove

what are the innervation(s) of latissimus dorsi

thoracodorsal nerve

what actions does the latissimus dorsi

shoulder extension

shoulder adduction

shoulder internal rotation

what is the proximal and distal attachment(s) for levator scapula

proximal: transverse processes of cervical vertebra

distal: superior angle of the scapula, the media border of the scapula to the superior root of the spine

what are the innervation(s) of levator scapula

the dorsal scapular nerve

what actions does the levator scapula preform

elevation of the scapula

inferior rotation of the glenoid fossa

what is the proximal and distal attachment(s) for rhomboid major

proximal: spinous process of T5-T7

distal: medial border of scapula at the root of the spine

what are the innervation(s) for rhomboid major

the dorsal scapular nerve

what actions are preformed by rhomboid major

retracting the scapula

medial rotation of the glenoid fossa

what is the proximal and distal attachment(s) for rhomboid minor

proximal: spinous process of C7 and T1

distal: medial border of the scapula at the root of the spine

what are the innervation(s) for rhomboid minor

the dorsal scapular nerve

what actions are preformed by rhomboid minor

retraction of the scapula

medial rotation of the glenoid fossa

what is label #1

pectoralis minor

what is label #2

serratus anterior

what is label #3

trapezius

what is label #4

pectoralis major

what is the proximal and distal attachment(s) for the deltoid

proximal: lateral clavicle, acromion and spine of the scapula

distal: deltoid tuberosity

what are the innervation(s) of the deltoid

axillary nerve

what actions are preformed by the deltoid and by what fibers

shoulder abduction (middle fibers)

shoulder flexion and internal rotation (anterior fibers)

shoulder extension and external rotation (posterior fibers)

shoulder adduction (anterior and posterior fibers)

what is the proximal and distal attachment(s) for teres major

proximal: supraspinous fossa

distal: medial lip of the bicipital groove

what are the innervation(s) of teres major

the lower subscapular nerve

what actions are preformed by teres major

extension, adduction and internal rotation

what muscle preforms the same actions as teres major

latissimus dorsi

what 4 muscles make up the rotator cuff

supraspinatus

infraspinatus

teres minor

supscapularis

what are the two meanings of the word “lat”

lat = lateral (referring to a movement direction)

lat = latissimus dorsi (referring to the muscle)