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Anatomy > Shoulder > Flashcards

Shoulder Flashcards

1
Q

What does the pectoral girdle consist of?

A

the clavicle and scapula, and the cervicoaxillary canal (conduit)

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2
Q

Movement of the clavicle (degrees)

A

incline 40˚, depress 10˚, rotate on long axis, protract 30˚, retract 25˚

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3
Q

Movement of scapula (degrees)

A

elevation 40˚, depression 10˚, retract 20˚, protract 30˚, rotate up 20˚, rotate down 60˚, 1/3 of arm abduction

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4
Q

Coracoclavicular ligament consists of what two ligaments?

A

conoid ligament (medial) and trapezoid ligament (lateral)

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5
Q

Subscapularis

A

Attachment- subscapular fossa to lesser tubercle, tendon separated by subscapular bursa
Innervation- upper and lower subscapular nerves
Blood- subscapular artery

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6
Q

Subscapularis action

A

medial rotation, joint stabilization

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7
Q

Serratus anterior

A

Attachment- ribs 1-8 to medial border of scapula
Innervation- long thoracic nerve
Blood- lateral thoracic artery

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8
Q

Serattus anterior action

A

primary protractor

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9
Q

Subclavius

A

Attachment- 1st rib to costoclavicular ligament
Innervation- nerve to subclavius
Blood- clavicular branch of thoracoacromial artery

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10
Q

Subclavius action

A

depresses clavicle, stability

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11
Q

Pectoralis minor

A

Attachment- ribs 3-5 to costoclavicular ligament
Innervation- medial pectoral nerve
Blood- pectoral branch of thoracoacromial artery

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12
Q

Pectoralis minor action

A

depress, protract, downward rotation of scapula

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13
Q

Pectoralis major attachments

A

clavicular head- proximal clavicle
sternal head- lateral margin of first 7 ribs
abdominal head inserts on intertubercular groove

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14
Q

Pectoralis major innervation and blood supply

A

Innervation- medial and lateral pectoral nerves

Blood- pectoral branch of thoracoacromial artery

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15
Q

Pectoralis major action

A

medial rotation, protraction, elevation, adduction of humerus, delineates infraclavicular fossa

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16
Q

Teres major

A

Attachment- posterior inferior angle of scapula to medial lip of intertubercular groove, tendon posterior to latissimus dorsi with bursa between
Innervation- lower subscapular nerve
Blood- circumflex scapular artery

17
Q

Teres major action

A

extends, adducts, medially rotates arm (SAME AS LATISSIMUS DORSI)

18
Q

Supraspinatus

A

Attachment- supraspinous fossa to greater tubercle of humerus
Innervation- suprascapular nerve
Blood- suprascapular artery

19
Q

Supraspinatus action

A

initiates abduction of arm (0-15˚), some medial rotation, stabilize joint

20
Q

Infraspinatus

A

Attachment- infraspinous fossa to middle facet of greater tubercle of humerus
Innervation- suprascapular nerve
Blood- suprascapular artery

21
Q

Infraspinatus action

A

lateral rotates humerus, stabilizes shoulder joint

22
Q

Teres minor

A

Attachment- lateral border of scapula to inferior facet on greater tubercle of humerus
Innervation- axillary nerves
Blood- circumflex scapular artery

23
Q

Teres minor action

A

lateral rotates humerus, stabilizes shoulder joint

24
Q

Deltoid

A

Attachment- lateral 1/3 of clavicle and spine of scapula to deltoid tuberosity of humerus
Innervation- axillary nerve
Blood- deltoid branch of thoracoacromial artery and posterior

25
Q

Deltoid action

A

abducts arm from 15 to 120˚, anterior part of muscle flexes and medially rotates while posterior part extends and laterally rotates

26
Q

What type of joint is the sternoclavicular joint?

A

synovial

27
Q

What are the bones involved with the sternoclavicular joint?

A

clavicular notch and sternal facet

28
Q

Ligaments involved in the sternoclavicular joint?

A

anterior and posterior sternoclavicular ligaments, interclavicular ligament, and costoclavicular ligament

29
Q

Movement of the sternoclavicular joint

A 
clavicle
-incline 40˚
-depress 10˚
rotate on long axis
-protract 30˚
-retract 25˚
30
Q

Acromioclavicular joint is what type of joint?

A

synovial

31
Q

Ligament involved in acromioclavicular joint?

A

acromioclavicular ligament

32
Q

What type of joint is the scapulothoracic?

A

muscular

33
Q

What are the two bursae of the scapulothoracic joint?

A

subscapular bursa- between subscapularis and serratus anterior
scapulothoracic bursa-between serratus anterior and external intercostals

34
Q

Muscles involved with the scapulothoracic joint?

A

subscapularis (superficial), serratus anterior (middle), and external intercostals (deep)

35
Q

Movement of the scapulothoracic joint?

A
  • elevation 40˚
  • depression 10˚
  • retract 20˚
  • protract 30˚
  • rotate up 20˚
  • rotate down 60˚
  • does 1/3 of arm abduction

Anatomy (15 decks)

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