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39 Cards in this Set

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  • Back
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the clavicle articulates with which structures?
acromion, sternum, first rib
on which part of the clavicle do the conoid tubercle and trapezoid line lie?
undersurface
what is unique about the clavicle in embryonic development? By what type of ossification is it formed?
it is the first to offisy and it does not ossify by endochondral ossification; it it formed by intramembranous ossification
is the coracoid process located medially or laterally to the glenoid cavity?
medially
which part of the humerus articulates with the glenoid cavity of the scapula?
head
what are 2 names for the space between the two tubercles of the humerus?
intertubercular sulcus or bicipital groove
which type of joint is the sternoclavicular?
synovial saddle-shaped
what is one unique feature of the synovial joint of the sternoclavicular joint?
articular disc
movement of the clavicle is normally in which directions?
AP and vertical (some rotation may occur)
what are the names of the 4 ligaments which reinforce the SC joint?
anterior and posterior sternoclavicular ligaments, interclavicular ligament (attaches the 2 clavicles by connecting to manubrium), costoclavicular ligament
which movement does the synovial joint of the acromioclavicular joint allow?
AP, vertical, medial rotation
which ligaments are present around the acromioclavicular joint?
acromioclavicular ligament, coracoclavicular ligament (anterior to joint and composed of conoid ligament (medial) and trapezoid ligament (lateral))
what type of joint is the glenohumeral joint?
synovial ball and socket joint
which feature of the glenohumeral joint helps to deepen the joint?
glenoid labrum
the fact that the glenohumeral joint capsule is lax, especially inferiorly, lends to which movement?
abduction
the subacromial bursa is located between which 2 features of the shoulder?
deltoid and supraspinatus tendon and joint capsule
what feature of the tendon of long head of biceps allows it to pass through glenohumeral joint?
synovial sheath around tendon
which 4 ligaments help to strengthen the glenohumeral joint?
superior glenohumeral ligament. Inferior glenohumeral ligament, middle glenohumeral ligament, coracohumeral ligament
which ligament spans the intertubercular groove to keep the long head of biceps tendon in place?
transverse humeral ligament
where are the two sites of attachment for the trapezoid ligament?
trapezoid tubercle on humerus (inferiorlateral surface) to the coracoid process
where are the two sites of attachment for the conoid ligament?
conoid tubercle of clavicle to coracoid process
where does the deltoid muscle originate? Insert? By what is it innervated? What is its action
spine of scapula, lateral clavicle, acromion; deltoid tuberosity; axillary nerve via quadrangular space; abducts the upper limb beyond the initial 15 degrees. Flex (anterior fibers), extend (posterior fibers).
where does the supraspinatus muscle originate? Insert? By what is it innervated? What is its action
supraspinatus fossa; superior facet of greater tubercle (part of rotator cuff); suprascapular nerve; first 15 degree of abduction
where does the infraspinatus muscle originate? Insert? By what is it innervated? What is its action
infraspinatus fossa; greater tubercle; suprascapular nerve; laterally rotates humerus
where does the teres minor muscle originate? Insert? By what is it innervated? What is its action
lateral border of scapula; inferior facet of greater tubercle; axillary nerve; laterally rotates humerus
where does the teres major muscle originate? Insert? By what is it innervated? What is its action
inferior angle of scapula; intertubercular sulcus; inferior subscapular nerve; medial rotation of humerus and extension of humerus
where does the long head of triceps muscle originate? Insert? By what is it innervated? What is its action
infraglenoid tubercle; olecranon process of ulna; radial nerve; extensor of elbow, extends humerus, adducts humerus
where does the subscapularis muscle originate? Insert? By what is it innervated? What is its action
subscapular fossa; lesser tubercle of humerus; inferior and superior subscapular nerve; medial rotation of arm
where does the serratus anterior muscle originate? Insert? By what is it innervated? What is its action
upper 8-9 ribs; medial border of scapula and inferior angle; long thoracic nerve; protraction and medial rotation of scapula
where does the pectoralis major muscle originate? Insert? By what is it innervated? What is its action
clavicle and sternum; intertubercular sulcus; lateral pectoral nerve and medial pectoral nerve
where does the pectoralis minor muscle originate? Insert? By what is it innervated? What is its action
ribs 3-5; coracoid process of scapula; medial pectoral nerve; protracts scapula; pulls tip of shoulder down
what are the 4 boundaries of the quadrangular space?
teres major, subscapularis, humerus, long head of triceps brachii
which arteries and nerves pass through the quadrangular space?
axillary nerve, posterior humeral circumflex artery and vein
which muscles define the triangular space?
teres major, teres minor, tricepr brachii long head
None
which vessels and nerves pass through the triangular space?
circumflex scapular artery and vein
what are the boudaries of the triangular interval? Where does it lie in relationship to the quadrangular space?
teres major, humerus, long head of triceps brachii
what is included in the triangular interval?
radial nerve
what bridges the suprascapular notch?
suprascapular ligament
does the suprascapular nerve go over or under the suprascapular ligament? The suprascapular artery?
under; over