Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Extras > Scapular and Pectoral Regions > Flashcards

Scapular and Pectoral Regions Flashcards

1
Q

MM of Pectoral Girdle

A 
rotator cuff mm and assisting mm
-Deltoid m= shoulder pads
-Teres major m= lats little helper
-Supraspinatus m= S
-Infraspinatus m= I
-Teres minor m= T
-Subscapularis m= S
(sternum is not part of girdle but some of its mms connect to sternum)
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Deltoid m O and I

A 
O:
lateral clavicle
acromion
spine of scapula
I:
deltoid tuberosity of humerus
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Deltoid m A

A

abducts humerus (1)
flexes
extends
rotates humerus (2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Deltoid m S

A

axillary n

post circumflex humeral vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Teres Major m O and I

A

O:
inferior angle of scapula
I:
crest of lesser tubercle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Teres Major m A

A

adducts
extends
medially rotates humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Teres Major m S

A

lower subscapular n

subscapular vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Supraspinatus m O and I

A

O:
supraspinous fossa
I:
greater tubercle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Supraspinatus m A

A

abducts humerus (1st 15*)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Supraspinatus m S

A

suprascapular n/a/v

dorsal scapular vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Infraspinatus m O and I

A

O:
infraspinous fossa
I:
greater tubercle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Infraspinatus m A

A

lateral rotation of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Infraspinatus m S

A

suprascapular n/a/v

subscapular vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Teres Minor m O and I

A

O:
lateral border of scapula
I:
greater tubercle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Teres Minor m A

A

lateral rotation of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Teres Minor m S

A

axillary n
suprascapular vessels
subscapular vessels

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Subscapularis m O and I

A

O:
subscapular fossa
I:
lesser tubercle of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Subscapularis m A

A

medial rotation of humerus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Subscapularis m S

A

upper and lower subscapular nn/a/v

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

What mms protect the shoulder region?

A

deltoid m: provides outer muscular support

rotator cuff provides inner muscular suppoer

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

Subacrominal (Subdeltoid) Bursa

A
  • membranous sac containing lubricating synovial fluid
  • inferior to acromion and deltoid
  • superior to supraspinatus m
  • -does not communicate with jt capsule
  • -becomes continuous with jt capsule due to attrition of supraspinatus tendon
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

Attrition of Supraspinatus tendon: tendon degenerates in ___________. Up to ___ of adults rupture tendon by ____. As it wears away, underlying jt capsule _____. When capsule _____, continuous with bursa, painful shoulder with _______ arm movement.

A 
middle age
1/4
65
thins
opens
limited
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

Quadrangular Space contains

A

transmitting axillary n and posterior circumflex humeral a

24
Q

Triangular Space contains

A

with circumflex scapular a deep to space

25
Q

Triangular Interval contains

A

profunda brachii (deep brachial) a and radial n

26
Q

Quadrangular Space mm

A

-teres minor m (sup)
-teres major m (inf)
-long head of triceps brachii m (med)
-surgical neck of humerus (lat)
contains- axillary n and pos circumflex humeral vessels

27
Q

Triangular Space mm

A

-teres minor m (sup)
-teres major m (inf)
-long head of triceps brachii m (lateral)
contains- circumflex scapular vessel

28
Q

Triangular interval mm

A

-teres major m (sup)
-long head of triceps brachii m (med)
-lateral head of triceps brachii m (lat)
contains- radial n and deep brachial a

29
Q

Suprascapular n

A

ventral rami of C5-C6
-runs under superior transverse scapular lig thru suprascapular notch

along with a pass thru spinoglenoid notch to infraspinatus fossa and supply supraspinatus and infraspinatus mm

30
Q

Suprascapular a

A

thyrocervical trunck
-runs over superior scapular lig above suprascapular notch

along with n pass thru spinoglenoid notch to infraspinatus fossa and supply supraspinatus and infraspinatus mm

31
Q

Dorsal Scapular n

A

ventral ramus of C5

along with a runs parallel to vertebral border of scapula and supply levator scapulae and rhomboid mm

32
Q

Dorsal Scapular a

A

subclavian a or transverse cervical a

along with n runs parallel to vertebral border of scapula and supply levator scapulae and rhomboid mm

33
Q

Accessory n

A

brainstem (CN XI)
-descends thru neck and joins transverse cervical a

along with transverse cervical a supplies trap

34
Q

Transverse Cervical a

A

thyrocervical trunk
-runs deep to trap m

along with accessory n supplies trap

35
Q

Upper and Lower Subscapular nn

A

posterior cord of brachial plaxus
-ventral rami of C5-C6

supplies subscapularis m

lower subscapular n (along with subscapular a) supply teres major m

36
Q

Subscapular a

A

axillary a
-splits to thoracodorsal a and circumflex scapular a

supplies subscapularis m

along with lower suscapular n supplies the teres major m

37
Q

Collateral Circulation of Scapular Region:

  • extensive
  • ensures adequate blood supply to ______
  • -in event of insufficient flow thru ________/temporary ligation
  • -collateral circulation by ______ and ______
A

UL
axillary a
thyrocervical trunk
subscapular a

38
Q

CCOSR: ligated axillary a:

  • ligate btw __________ and ________
  • blood flow in __________ reverses
  • allows blood to flow to UL
  • ligate anywhere ____ to ________ and blood cannot flow to UL
A 
thyrocervical trunk
subscapular a
subscapular a
distal
subscapular a
39
Q

Pectoralis Major m O and I

A 
O:
clavicle
sternum
ribs 2-6
I:
crest of greater tubercle of humerus
40
Q

Pectoralis Major m A

A

adducts

medially rotates humerus

41
Q

Pectoralis Major m S

A

medial and lateral pectoral nn

thoracoacrominal vessels

42
Q

Pectoralis Minor m O and I

A

O:
ribs 3-5
I:
coracoid process of scapula

43
Q

Pectoralis Minor m A

A

protracts scapula

44
Q

Pectoralis Minor m S

A

medial pectoral n

thoracoacomial vessels

45
Q

Lateral Thoracic (mammary) a

A

branch of axillary a (deep to pec minor m)

  • runs with LONG THORACIC n
  • supplies:
  • -lateral thorax
  • -lateral pec region
  • -lateral breast
46
Q

Internal Thoracic (mammary) a

A

branch of subclavian a (inside thorax)

  • descends across intercostal spaces lateral to sternum
  • supplies:
  • -anterior thorax
  • -medial pec region
  • -medial breast
47
Q

Thoracoacromial a

A

branch of axillary a (under pec minor)

  • 4 branches:
  • -pectoral a
  • -clavicular a
  • -acromial a
  • -deltoid a
48
Q

Pectoral a

A

branch of Thoracoacromial a

-supplies upper pec region

49
Q

Clavicular a

A

branch of Thoracoacromial a

-supplies clavicle region

50
Q

Acromial a

A

branch of Thoracoacromial a

-supplies upper shoulder region

51
Q

Deltoid a

A

branch of Thoracoacromial a

-supplies lower should region

52
Q

Cutaneous nn of pec region

A

general sensation

  • T1-T6
  • lateral and anterior cutaneous branches of intercostal nn
53
Q

Medial Pectoral n of pec region

A

medial cord of brachial plexus

  • -derived from ventral rami (C8-T1)
  • pierces pec minor to enter pec major
  • -supplies both
54
Q

Lateral Pectoral n of pec region

A

lateral cord of brachial plexus

  • derived from ventral rami (C5-C7)
  • -runs above pec minor to enter pec major
  • supplies the remainder of pec major m
55
Q

Long Thoracic n of pec region

A

derived from ventral rami (C5-C7)
-supplies serratus anterior m superficially

–damage can occur during mastectomy resulting in “winged scapula”

Extras (24 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions