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Kinesiology
Kinesiology Chapter 8 shoulder girdle
62
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Undergraduate 2
01/23/2011

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Term
scapula and clavicle
Definition
what are the two parts to the shoulder girdle?
Term
scapula and humerus
Definition
what are the two parts of the shoulder joint?
Term
shoulder girdle and shoulder joint
Definition
what does the shoulder complex consist of?
Term
shoulder girdle
Definition
term often used to discuss the activities of the scapula and clavicle and to a lesser degree, the sternum
Term
sternoclavicular and acromioclavicular
Definition
what joints allow shoulder girdle motions?
Term
elevation and depression, protraction and retraction, upward and downward rotation
Definition
what are the motions permitted in the shoulder girdle?
Term
shoulder joint
Definition
glenohumeral joint; consists of the scapula and humerus
Term
flexion, extension and hyperextension, abduction and adduction, medial and lateral rotation, horizontal ab and adduction
Definition
what motions are permitted in the shoulder joint?
Term
superior angle
Definition
superior medial aspect of the scapula, providing attachment for the levator scapula muscle
Term
inferior angle
Definition
on scapula; most inferior point and where vertebral and axillary border meet; this point determines scapular rotation
Term
vertebral border
Definition
on scapula; between superior and inferior angles medially and attachment of the rhomboid and serratus anterior muscles
Term
axillary border
Definition
on scapula; the lateral side between glenoid fossa and inferior angle
Term
spine
Definition
on scapula; projection on posterior surface running from medial border laterally to the acromion process; provides attachment for the middle and lower trapezius muscles
Term
coracoid process
Definition
on scapula; projection on anterior surface, providing attachment for the pectoralis minor muscle
Term
acromion process
Definition
on scapula; broad, flat area on superior lateral aspect, providing attachment for the upper trapezius muscle
Term
glenoid fossa
Definition
on scapula; slightly concave surface that articulates with humerus on superior lateral side above the axillary border and below acromion process
Term
clavicle
Definition
on scapula; an "S" shaped bone that connects the upper extremity to the axial skeleton at the sternoclavicular joint
Term
sternal end
Definition
on clavicle; attaches medially to sternum
Term
acromial end
Definition
on clavicle; attaches laterally to scapula, and provides attachment for the upper trapezius muscle
Term
body
Definition
on clavicle; area between the two ends
Term
sternum
Definition
flat bone located in the midline of the anterior thorax
Term
manubrium
Definition
the superior end of the sternum, providing attachment for the clavicle and the first rib
Term
body
Definition
the middle two-thirds of the sternum, providing attachment for the remaining ribs
Term
xiphoid process
Definition
meaning "sword-shaped", the inferior tip of the sternum
Term
sternoclavicular joint
Definition
provides the shoulder girdle with its only direct attachment to the trunk; a synovial joint, motions occur in 3 planes
Term
sternoclavicular, costoclavicular, and interclavicular joints
Definition
what are the three ligaments that support the sternoclavicular joint?
Term
sternoclavicular ligament
Definition
this ligament connects the clavicle to the sternum on both the anterior and posterior surfaces and is divided into posterior and anterior sternoclavicular ligaments
Term
costoclavicular ligament
Definition
short, flat, rhomboid-shaped ligament that connects the inferior surface of the clavicle to the superior surface of the costal cartilage of the first rib; limits clavicular elevation
Term
interclavicular ligament
Definition
ligament that is located on top of the manubrium, connectin the superior sternal ends of the clavicles; limits clavicular depression
Term
acromioclavicular joint
Definition
joint that connects the acromion process of the scapula with the lateral end of the clavicle; plane shaped synovial joint with three planes of motion
Term
coracoacromial and coracoclavicular ligaments
Definition
what are the two accessory ligaments of the acromioclavicular joint?
Term
coracoclavicular ligament
Definition
even though this ligament is not directly located at the joint, it allows the scapula to be suspended from the clavicle
Term
coracoclavicular ligament
Definition
this ligament connects the scapula to the clavicle by attaching to the inferior surface of the lateral end of the clavicle and the superior surface of the coracoid process of the scapula
Term
coracoacromial ligament
Definition
forms and arch over the head of the humerus; attaches laterally on the superior surface of the coracoid process and runs up and out to the inferior surface of the acromial process
Term
scapular tilt
Definition
motion when the shoulder joint goes into hyperextension; superior end tilts anteriorly and the inferior end tilts posteriorly
Term
scapulohumeral rhythm
Definition
concept that describes the movement relationship between the shoulder girdle and shoulder joint; the first 30 degrees is pure shoulder joint motion but after that, for ever 2 degrees of shoulder flexion or abduction, the scapula rotates 1 degree; this is a 2:1 ratio
Term
trapezius, levator scapulae, rhomboids, serratus anterior, pectoralis minor
Definition
what are the 5 muscles of the shoulder girdle?
Term
trapezius muscle
Definition
a large superficial muscle, which is diamond-shaped and is divided into 3 parts: upper, middle and lower
Term
occipital protuberance (in occipital lobe) and the nuchal ligament which attches to the spinous process of the upper cervical vertebrae
Definition
what are the origins of the upper trapezius muscle?
Term
lateral end of the clavicle and acromion process
Definition
where does the upper trapezius muscle insert?
Term
elevation; rotation
Definition
The upper trapezius muscle is a prime mover in scapular _______ and upward ______.
Term
nuchal ligament of the lower cervical vertebrae and the spinous process of C7
Definition
where does the middle trapezius muscle originate?
Term
the medial part of the acromion process and along the scapular spine
Definition
where does the middle trapezius muscle insert?
Term
scapular retraction (major) and upward rotation (minor)
Definition
what motions does the middle trapezius muscle take part in?
Term
spinous processes of the middle and lower thoracic vertebrae
Definition
where does the lower trapezius muscle originate?
Term
the base of the scapular spine
Definition
where does the lower trapezius muscle insert?
Term
depression and upward rotation (major); retraction (minor)
Definition
what motions is the lower trapezius muscle involved in?
Term
levator scapula muscle
Definition
muscle named for its function; covered entirely by the trapezius muscle
Term
o: side processes of C1 to C4;
i: vertebral border between the superior angle and spine
Definition
where does the levator scapula muscle originate and insert?
Term
elevation and downward rotation (major)
Definition
what motions is the levator scapula involved in?
Term
rhomboid muscle
Definition
muscle that is under the trapezius and can be palpated when the trapezius is relaxed
Term
o: nuchal ligaments of C7 to T5
i: vertebral border of the scapula below the levator scapula muscle
Definition
where does the rhomboid muscle originate and insert?
Term
retraction and elevation (major)
Definition
what motions is the rhomboid muscle involved in?
Term
serratus anterior muscle
Definition
muscle that runs posteriorly to pass between the scapula and the rib cage
Term
scapular protraction (major); keeps vertebral border near the ribs
Definition
what motions is the serratus anterior muscle involved in?
Term
pectoralis minor muscle
Definition
the only shoulder girdle muscle that lies entirely on the anterior surface of the body
Term
o: 3rd-5th ribs near costal cartilage
i: coracoid process of the scapula
Definition
where does the pectoralis minor muscle originate and insert?
Term
scapular depression, downward rotation and scapular tilt (major)
Definition
what motions is the pectoralis minor muscle involved in?
Term
force couple
Definition
muscles pulling in different directions to accomplish the same motion
Term
moving the head and neck
Definition
the upper trapezius can reverse its muscle action and play a role in what?
Term
elevating the trunk
Definition
the lower trapezius can reverse its action and play a role in what?
Term
move the neck
Definition
the levator scapula mucle can reverse its action and play a role in what?
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