Quiz 5 KRS-353

clavicle

Two Pectoral Girdle


1. \

scapula

Two Pectoral Girdle


2. \

shoulder girdle

Accompany glenohumeral joint movement to increase ROM

shoulder girdle

To stabilize the scapula and clavicle during glenohumeral joint movements.

sterno-clavicular joint

Where is the only bony contact the shoulder girdle has with the axial skeleton?

superior angle

what is this?

superior border

what is this?

scapular notch

what is this?

acromion process

what is this?

coracoid process

what is this?

glenoid fossa

what is this?

infraglenoid tubercle

what is this?

axillary border

what is this?

subscapular fossa

what is this?

inferior angle

what is this?

acromion process

what is this?

coracoid process

what is this?

scapular notch

what is this?

superior border

what is this?

superior angle

what is this?

supraspinous fossa

what is this?

spine of scapula

what is this?

infraspinous fossa

what is this?

vertebral border

what is this?

inferior angle

what is this?

axillary border

what is this?

neck of scapula

what is this?

infraglenoid tubercle

what is this?

glenoid fossa

what is this?

sterno-clavicular joint

Classification: Ball & Socket

Ball - Sternal end of clavicle. 

Socket – Clavicular notch of the sternum.

ball and socket

classification of sterno-clavicular joint

3

How many planes can this joint move in?

rotational

What movement can this joint do?

sterno-clavicular disk

Attached to both ends of the joint.  Divides the joint cavity into 2 parts. Fibro-cartilage

sterno-clavicular disk

Prevent superior dislocation of the head of the clavicle.

sterno-clavicular disk

Absorb compression stress.

sterno-clavicular disk

Improve bony fit.

ant/post sterno-clavicular ligament

two ligaments


1. \

costoclavicular ligament

two ligaments


2. \

costoclavicular ligament

Attaches from the clavicle to the costal cartilage of the first rib.

sterno-clavicular joint

Movements of the shoulder girdle complex occur around the…

acromio-clavicular joint

Classification:  Planar, synovial, non-axial.

acromio-clavicular joint

Medial edge of the acromion process attached to the lateral end of the clavicle.

acromio-clavicular

A lateral blow to the… joint will dislocate the clavicle superiorly to the acromion. This is a “shoulder separation”.

coraco-clavicular ligament

Composed of

* Conoid Ligament
* Trapezoid Ligament

costco-clavicular

Coraco-clavicular ligament

Similar to the ___________ lig.

very strong, doesn’t cross joint

Why are the coraco-clavicular ligament and costo-clavicular ligament similar?

fracture

Injury or trauma to the Clavicle

the most common…

sterno-clavicular

movements at shoulder girdle at what joint?

axilla

Anterior wall: formed by pectoralis major & minor.

axilla

Medial wall: formed by the serratus anterior.

axilla

Posterior wall: formed by shoulder mm. – latissimus dorsi & teres major.

axilla

Lateral wall: formed by intertubercular groove of the humurus

abduction

upward rotation

adduction

downward rotation

flexion

elevation

extension

depression

internal rotation

protraction 1

external rotation

retraction 1

horizontal adduction

protraction 2

horizontal abduction

retraction 2

abduction

what is this?

flexion

what is this?

adduction and flexion

what is this?

horizontal adduction (protraction)

what is this?

external rotation (retraction)

what is this?

internal rotation (protraction)

what is this?

horizontal abduction (retraction)

what is this?

extension

what is this?

shoulder girdle

Accompany glenohumeral joint movement to increase ROM.

shoulder girdle

To stabilize the scapula and clavicle during glenohumeral joint movements.

shoulder girdle

Scapulo-humeral rhythm

stabilization

The importance of muscle function in…

proximal stabilization

Movements associated with joint motion require…

origin

Proximal attachment, generally considered the __least movable part__

origin

the part that attaches closest to the midline or center of the body.

stable

Muscles can only exert force and cause limb movement __if one end remains…__

insertion

*The* distal attachment, generally considered the __most movable part__

insertion

*the part that attaches farthest from the midline or center of the body.*

6

…muscles primarily involved in shoulder girdle movements

muscles

6… primarily involved in shoulder girdle movements

muscles

Do not attach to humerus & do not cause shoulder joint actions.

muscle

Essential in providing dynamic stability of the scapula so it can serve as a __relative base of support__ for shoulder joint activities such as throwing, batting, & blocking.

dynamic stability

muscles are Essential in providing… of the scapula so it can serve as a __relative base of support__ for shoulder joint activities such as throwing, batting, & blocking.

scapula

muscles are Essential in providing dynamic stability of the … so it can serve as a __relative base of support__ for shoulder joint activities such as throwing, batting, & blocking.

base of support

muscles are Essential in providing dynamic stability of the scapula so it can serve as a relative … for shoulder joint activities such as throwing, batting, & blocking.

primary

There are 6… muscles of the shoulder girdle.

nerves

Shoulder girdle muscles primarily innervated by *cervical* & brachial plexus

cervical

nerves

Shoulder girdle muscles primarily innervated by *…* & brachial plexus

brachial plexus

nerves

Shoulder girdle muscles primarily innervated by *cervical* & …

serratus anterior

Anterior muscles of the shoulder girdle


1. \

pectoralis minor

Anterior muscles of the shoulder girdle


2. \

subclavius

Anterior muscles of the shoulder girdle


3. \

upper 9 ribs

serratus anterior

origin: superiors surfaces of ….

serratus anterior

__Origin__

Superior surfaces of upper 9 ribs.

medial border of scapula

serratus anterior

insertion: costal aspect of ….

serratus anterior

__Insertion__ 

Costal aspect of medial border of scapula.

long thoracic nerve

serratus anterior

innervation: …. arising from the ventral rami of C5, C6, C7, before the brachial plexus.

serratus anterior

innervation: Long thoracic nerve arising from the ventral rami of C5, C6, C7, before the brachial plexus.

stabilization

Primary role of Serratus Anterior

…. of the shoulder girdle