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Anatomy > Axioappendicular Muscles > Flashcards

Axioappendicular Muscles Flashcards

1
Q

what is the general origin of the axioappendicular muscles?

A

axial and or appendicular skeleton

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2
Q

what is the general insertion of the axioappendicular muscles?

A

humerus and or scapula

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3
Q

what are the 2 muscles of the superficial compartment of the back?

A

Trapezius and Latissimus Dorsi

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4
Q

what is the origin and insertion of trapezius?

A

Origin: External Occipital Crest, Ligamentum Nuchae and Spinal processes of T1-T12

Insertion: Lateral Clavicle, Acromion Process, and Spine of Scapula

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5
Q

what are the main actions of the upper fibres of the trapezius?

A

Scapular elevation, scapular upward rotation, neck extension, neck lateral flexion

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6
Q

what are the main actions of the middle fibres of the trapezius?

A

scapular retraction

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7
Q

what are the main actions of the lower fibres of the trapezius?

A

scapular depression and scapular upward rotation

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8
Q

What are the origin and insertion of latissimus dorsi?

A

Origin: spinous process of T6-Sacrum, Iliac Crest, Ribs 10-12, and Thoracolumbar Fascia

Insertion: Bicipital groove (of the humerus)

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9
Q

what are the main actions of latissimus dorsi?

A

GH extension, GH adduction, GH medial rotation

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10
Q

what is the composite action of Latissimus Dorsi

A

Pull up or Swimming

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11
Q

what is the trapezius in relation to the latissimus dorsi

A

superior and superficial

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12
Q

the latissimus dorsi contributes to the posterior aspect of the _______ wall

A

axillary

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13
Q

axillary wall

A

3 muscles contribute to the axillary wall which is in the underarm. blood and lymph vessels and nerves run through it

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14
Q

What are the 3 muscles of the deep compartment of the back?

A

1) levator scapulae
2) Rhomboid minor
3) rhomboid major

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15
Q

what are the origin and insertion of elevator scapulae?

A

origin: transverse processes of C1-C4

Insertion: superior angle of the scapula

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16
Q

what are the main actions of elevator scapulae

A

scapular elevation and scapular downward rotation

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17
Q

what are the origin and insertion of rhomboid minor?

A

origin: spinous processes of C7-T1

Insertion: lower vertebral border of scapula

18
Q

what are the main actions of rhomboid minor?

A

scapular retraction and scapular downward rotation

19
Q

what are the origin and insertion of rhomboid major?

A

origin: spinous processes of T2-T5

Insertion: Lower vertebral border of scapula

20
Q

what are the main actions of Rhomboid major?

A

scapular retraction and scapular downward rotation

21
Q

what are the 6 scapulohumeral muscles?

A

1) deltoid
2) Teres Major
3) Supraspinatus
4) Infraspinatus
5) Teres Minor
6) Subscrapularis

22
Q

what shape is the deltoid muscle?

A

triangular

23
Q

what are the origin and insertion of deltoid?

A

origin: lateral clavicle, accordion process and spine of scapula
insertion: deltoid tuberosity

24
Q

what are the main actions of the anterior fibres of deltoid?

A

GH flexion, GH medial rotation, Gh cross flexion

25
Q

what are the main actions of the middle fibres of deltoid?

A

GH abduction

26
Q

what are the main actions of the posterior fibres of deltoid?

A

GH extension, GH lateral rotation and GH cross extension

27
Q

what is the deltoid innervated by?

A

axillary nerve

28
Q

what are the origin and insertion of theres major?

A

origin: inferior angle of the scapula
insertion: bicipital groove

29
Q

what are the main actions of Teres Major?

A

GH adduction, GH extension, GH medial rotation

30
Q

what is the composite action of Teres Major?

A

Swimming and pull up

31
Q

what is teres Major functionally coupled with?

A

Latissimus Dorsi

32
Q

what are the 4 muscles that are called the rotator cuff muscles or SITS muscles?

A

1) Supraspinatus
2) Infraspinatus
3) Teres Minor
4) Subscapularis

33
Q

what is the origin and insertion of supraspinatus

A

origin: supraspinous fossa
insertion: greater tubercle of the humerus

34
Q

what is the main action of supraspinatus

A

initiates first 15 degrees of GH abduction

35
Q

what is the origin and insertion of infraspinatus

A

origin: infraspinous fossa
insertion: greater tubercle of humerus

36
Q

what is the main action of infraspinatus

A

lateral rotation of GH joint

37
Q

what is the origin and insertion of teres minor

A

origin: axillary border
insertion: greater tubercle of the humerus

38
Q

what is the main action of teres minor

A

lateral rotation of the GH joint

39
Q

what innervates teres minor

A

axillary nerve

40
Q

what are the origin and insertion of subscapularis

A

origin: subscapular fossa
insertion: lesser tubercle

41
Q

what is the main action of subscapularis

A

medial rotation of the GH joint

Anatomy (22 decks)

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