Axilla and GH Joint
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what is the axilla?
the space below the glenohumeral joint that provides a passageway for neurovascular structures of the arm
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the neurovascular structures of the arm are _________ , the axilla is normally protected by the __________ ___
vulnerable
adducted arm
adducted arm
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most individuals have a strong reflex to ______ the arm when any invasion to the axilla occurs
adduct
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what important structures are in the axilla?
high pressure artery
brachial plexus
brachial plexus
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the ______ ________ surrounds the axillary artery and brachial plexus, and ________ ____ cushions and protects all surfaces
axillary sheath
axillary fat
axillary fat
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the deepest axillary structure is
axillary artery
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severing the axillary artery could lead to
death
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the cords of the brachial plexus _____ the artery
surround
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the axillary vein is found ______ to the neuroarterial bundle
superficially
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the axillary vein is a very low _______ blood vessel so
pressure
it wouldn't lose as much blood as a severed artery
it wouldn't lose as much blood as a severed artery
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lymph vessels drain
excess interstitial fluid
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the excess fluid is returned to
the blood near the right atrium
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lymph first passes through _____ _____ for immune surveillance
lymph nodes
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there are _____ - _____ lymph nodes
500 - 700
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where are lymph nodes mainly located?
axillae
inguinal regions
intenstines
cervical region
inguinal regions
intenstines
cervical region
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axillary lymph nodes filter
lymph
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fascia surrounds each muscle and invaginates to form _____ which ...
septae
divide the region into anterior (flexor) and posterior (extensor) components
divide the region into anterior (flexor) and posterior (extensor) components
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Three shoulder joints
sternoclavicular joint
acromioclavicular joint
glenohumoral joint
acromioclavicular joint
glenohumoral joint
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sternoclavicular joint bones
clavicle
manubrium
first costal cartilage
articular disc
manubrium
first costal cartilage
articular disc
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the sternoclavicular ligament connects
the sternum and the clavicle
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the interclavicular ligament connects
both clavicles together
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the costoclavicular ligament connects
the clavicle to the first rib
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the sternal end of the clavicle articulates with
manubrium of the sternum
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the conoid tubercle is on the _____ side of the scapula
inferior and posterior
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coracoacromial ligament
connects the coracoid process and the acromion
stabilizes the shoulder joint
stabilizes the shoulder joint
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acromioclavicular joint bones
clavicle and scapula
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the acromial end of the clavicle articulates with
the acromion of the scapula
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the coracoid process of the scapula is the attachment point for
biceps brachii
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a fossa is
shallow, wide depressions, like a bowl
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2 fossas of the scapula
supraspinous
infraspinous
infraspinous
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glenohumoral joint bones
humerus
scapula
glenoid labrum
scapula
glenoid labrum
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the head of the humerus fits into
the glenoid fossa of the scapula
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the glenohumoral joint is a _______ joint
synovial
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the glenohumoral joint capsule is _______ and includes
incomplete
a tubular passageway for the biceps tendon
a tubular passageway for the biceps tendon
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in the glenohumoral joint, capsular ligaments and tendons serve as
extra stabilization
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bursae
synovial fluid-filled sacs that prevent friction
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the glenoid cavity holds ______ ______ ____ of the humoral head, with the glenoid labrum
less than 1/3
increasing concavity by 50%
increasing concavity by 50%
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the humoral head is dynamically stabilized by the
rotator cuff muscles
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the rotator cuff muscles cover all but ..... which is primarily stabilized by
the inferior aspect of the joint
passive ligamentous structures
passive ligamentous structures
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the inferior of the GH joint is stabilized by the
inferior GH ligament complex
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