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human anatomy > Pectoral Girdle Skeletal/muscular > Flashcards

Pectoral Girdle Skeletal/muscular Flashcards

1
Q

“Good posture”

A

Retracted scapulae

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2
Q

“Poor posture”

A

Protracted scapulae

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3
Q

Elevators (4)

A

-rhomboid major and minor
-levator scapulae
-trapezius (superior)

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4
Q

Depressors (2)

A

Trapezius (inferior)
Pectoralis minor

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5
Q

Superior rotators (2)

A

-serratus anterior
-trapezius (superior)

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6
Q

Inferior rotators (3)

A

-Rhomboid major and minor
-levator scapulae

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7
Q

Anterior thoracic muscles

A

-pectoralis minor
-serratus anterior
-subclavis

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8
Q

Pectoralis minor

A

-thin, flat and triangular
Helps depress and protract the scapula

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9
Q

Shoulders are hunched forward what is contracting?

A

Pectoralis minor

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10
Q

Serratus anterior

A

Large, flat, fan shaped
-between rib and scapula
-Agonist in scapula protraction
-holds scapula against the rib cage

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11
Q

Subclavius

A

Small, cylindral
-stabilize and depress clavicle

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12
Q

Posterior thoracic muscles

A

-trapezius
-levator scapulae
-rhomboid minor and major

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13
Q

Trapezius

A

Large flat, diamond shape
-elevate, depress, retract or rotate scapula

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14
Q

Levator scapulae

A

Narrow, elongated muscle
-elevates the scapula

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15
Q

Rhomboid minor and major

A

-elevate and retract the scapula
Stand up straight with your shoulders back

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16
Q

Trapezius superior fibres

A

Elevate and superiority rotate scapula

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17
Q

Trapezius middle fibres

A

retract scapula

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18
Q

Inferior fibres

A

Depress scapula

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19
Q

Latissimus dorsi and pectoralis major are primary attachments of…

A

The arm to the trunk

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20
Q

Latissimus dorsi

A

“Swimmers muscle”
-agonist of arm extension
-abducts and medially rotates arm

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21
Q

Pectoralis major

A

Agonist of arm flexion
-abducts and medially rotates arm

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22
Q

Deltoid

A

Three different proximal attachment points, but is overall an extremely powerful muscle
-prime abductor of the arm

23
Q

Deltoid anterior fibres

A

Flex and medially rotate the arm

24
Q

Deltoid middle fibres

A

Abduct the arm

25
Q

Deltoid posterior fibres

A

Extend and laterally rotate the arm

26
Q

Croacobrachialis

A

Synergistic to pectoralis major
-flexing and adducting the arm

27
Q

Teres major

A

Synergistically with the latissimus dorsi
-extending, adducting and medially rotating the arm

28
Q

Rotator cuff muscles

A

-subscapularis
-supraspinatus
-infraspinatus
-teres minor

29
Q

Subscapularis

A

Winding up for a pitch
-medially rotates the arm

30
Q

Supraspinatus

A

Start the execute the pitch
-abduct the arm

31
Q

Infraspinatus and teres minor

A

Slow down the pitching arm after completion
-adducting and laterally rotate arm

32
Q

Girdles

A

Connect limbs to axial skeleton

33
Q

Clavicle

A

S shaped bone that connects the pectoral girdle - and the axial skeleton

34
Q

Sternal end of clavicle

A

Manubrium/sternoclavicular joint

35
Q

Acromial end of the clavicle

A

Forms acromoclavicular joint

36
Q

Scapula is a – bone

A

Flat

37
Q

Two ends of the clavicle

A

-sternal end
-aoromial end

38
Q

Sternal end

A

Forms sternoclavicular join

39
Q

Aoromial end

A

Forms acromioclavicular joint

40
Q

Three borders of the scapula

A

-superior
-medial
-lateral

41
Q

Three scapula angle

A

-superior angle
-lateral angle
-inferior angle

42
Q

The scapula fossa function

A

For muscle attachment

43
Q

Shoulder joint is a…

A

Ball-socket

44
Q

Anterior thoracic

A

-pectoralis minor
-serratus anterior
-subclavis

45
Q

Posterior thoracic

A

Levator scapulae, rhomboid major/minor, trapezius

46
Q

Subclavis origin and intercept

A

O: rib
I: inferior surface clavicle

47
Q

Pectoralis minor origin and intercept

A

O: rib 3-5
I: coracoid

48
Q

Serratus anterior origin and intercept

A

O: 1-8, rib
I: medial boarder scapula (Facing vertebral)

49
Q

Anterior thoracic origin is usually

A

Rib

50
Q

Posture thoracic origin usually is

A

Back of skull/vertebral

51
Q

Trapezius origin and intersect

A

O: occipital bone
I: clavicle

52
Q

Levator scapulae origin and intersect

A

O: C1-C4
I: superior part of medial scapula

53
Q

Rhomboid minor origin and intersect

A

O: cerveical vertebra
I: medial border scapula

54
Q

Rhomboid major origin and intersect

A

O: thoracic vertebra
I: medial border scapulae

human anatomy (15 decks)

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