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ANAT Block 3 > Pectoral and Shoulder Regions > Flashcards

Pectoral and Shoulder Regions Flashcards

1
Q

what activity do human upper limb have

A

prehensile not locomotor or postural

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2
Q

shoulder girdle movement is when

A

when the shoulder is abducted more then 90 degress

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3
Q

where does hte glenoid fossa face when the shoulder is abducted more then 90 degrees

A

superiorly

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4
Q

what are the 4 things that are ventral elements of the shoulder

A
  • clavicle
  • coracoid process
  • anterior soft tissues of arm
  • upper 1/3 of glenoid fossa
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5
Q

what kind of elements are the ribs and sternum

A

ventral

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6
Q

muscles are ventral muscles if they attach to?

A

ventral elements

  • clavicle
  • coraocid process
  • upper 1/3 glen foss
  • anterior comp. of arm
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7
Q

what are the 4 dorsal compartments

A
  • spine of scap & acromian
  • blade of scap
  • vertebral column
  • posterior comp. of arm
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8
Q

wat are the 8 muscles of the pectoral girdle

A
  1. trapeziues
  2. levator scapulae
  3. serratus anterior
  4. rhomboids
  5. pec major
  6. pec minor
  7. latissimus dorsi
  8. subclavius
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9
Q

what innervates trapezius

A

accessory n.

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10
Q

what innervates serratus anterior

A

long thoracic n.

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11
Q

what innervates levator scapulae

A

dorsal scapular n.

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12
Q

what innervates rhomboids

A

dorsal scapular n.

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13
Q

what innervates pec major

A

lateral and medial pectoral n

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14
Q

what innervates pec minor

A

medial pectoral n

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15
Q

what innervates latissimus dorsi

A

thoracodorsal n

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16
Q

what innervates subclavius

A

n. to subclavius (C5-C6)

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17
Q

what are the scapulohumeral muscles (6)

A
  • deltoid
  • teres major
  • teres minor
  • supraspinatus
  • infraspinatus
  • subscapularis
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18
Q

what innercates deltoid

A

axillary n.

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19
Q

what innervates teres major

A

lower subscapular n.

20
Q

what innervates teres minor

A

axillary n.

21
Q

what innervates supraspinatus

A

suprascapular n

22
Q

what innervates infraspinatus

A

suprascapular n

23
Q

what innervates subscapularis

A

upper and lower subscapular n

24
Q

muscles anterior to shoulder joint are

A

flexors (pec major and delt)

25
Q

muscles posterior to shoulder joint are?

A

extensors (post. delt, teres major, latissmus dorsi)

26
Q

muscles that are superior to the shoulder are?

A

abducters (middle delt, supraspinatus)

27
Q

muscles inferior to the shoulder joint are

A

adducters (pec major, latissmus dorsi, teres major)

28
Q

muscles that approach the long axis of the humerus at an angle

A

rotators

  • teres major
  • latissmus dorsi
  • pec major
  • subscapularis
29
Q

what is important about the dorsal scapular artery

A

it sometimes comes directly off of the subclavian artery and has nothing to do with the transverse cervical arteru

30
Q

what goes over the suprascapular ligament and what goes under

A

suprascapular artery

suprascapular nerve

31
Q

what passes through the triangular space

A

circumflex scapular a.

32
Q

what passes through the quadratus space

A

posterior circumflex humeral a.

and axillary nerve

33
Q

due to the arteries that wrap around the shoulder (posterior circumflex humeral, anterior circumflex humeral, and deltoid artery, what is achieved

A

blood flow to the arm incase the major blood pathway is ligated or blocked (axillary artery)

34
Q

where do clavicular fractures usually happen

A

middle 1/3 of the bone

35
Q

shoulder separation is also known as?

A

acromioclavicular joint seperation

36
Q

what disrupts the coraco-clavicular ligament and leads to the elevation of the upper subluxatoni of the trapezoid

A

severe trauma

37
Q

what kind of injury causes the separation of acromio-clavicular

A

minor injury

38
Q

shoulder dislocation occurs were

A

glenohumeral joint

39
Q

what shoulder dislocation is common

A

anterior

40
Q

what two nerves can be damaged if there is a glenohumeral joint

A

axillary n & radial nerve

41
Q

what is posterior dislocation associated with

A

epileptic seizure caused by electrocution

42
Q

what is usually involved in rotator cuff disorders

A

supraspinatus

43
Q

what can impinge the supraspinatus

A
  • muscle swelling
  • excess fluid of subacromial bursa
  • subacromial bony spurs growing
44
Q

what are the three things that cause tendinopathy?

A
  • repeated trauma
  • tendon degenerates and can tear
  • painful arm movemwent
45
Q

when there is an elevation of medial border of scapula off posterior thoracic wall what is it called

A

scapular winging

46
Q

when there is medial or lateral displacement of the scapula along the posterior thoracic wall its called

A

scapular winging

47
Q

lateral winging

A

when the superior border of the scapula will not move medially because the trapezius is paralyzed so it moves laterally

ANAT Block 3 (5 decks)

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