Axioappendicular Muscles

Question 1

what is the general origin of the axioappendicular muscles?

Answer 1

axial and or appendicular skeleton

Question 2

what is the general insertion of the axioappendicular muscles?

Answer 2

humerus and or scapula

Question 3

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

Answer 3

Trapezius and Latissimus Dorsi

Question 4

what is the origin and insertion of trapezius?

Answer 4

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

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

Question 5

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

Answer 5

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

Question 6

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

Answer 6

scapular retraction

Question 7

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

Answer 7

scapular depression and scapular upward rotation

Question 8

What are the origin and insertion of latissimus dorsi?

Answer 8

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

Insertion: Bicipital groove (of the humerus)

Question 9

what are the main actions of latissimus dorsi?

Answer 9

GH extension, GH adduction, GH medial rotation

Question 10

what is the composite action of Latissimus Dorsi

Answer 10

Pull up or Swimming

Question 11

what is the trapezius in relation to the latissimus dorsi

Answer 11

superior and superficial

Question 12

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

Answer 12

axillary

Question 13

axillary wall

Answer 13

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

Question 14

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

Answer 14

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

Question 15

what are the origin and insertion of elevator scapulae?

Answer 15

origin: transverse processes of C1-C4

Insertion: superior angle of the scapula

Question 16

what are the main actions of elevator scapulae

Answer 16

scapular elevation and scapular downward rotation

Question 17

what are the origin and insertion of rhomboid minor?

Answer 17

origin: spinous processes of C7-T1

Insertion: lower vertebral border of scapula

Question 18

what are the main actions of rhomboid minor?

Answer 18

scapular retraction and scapular downward rotation

Question 19

what are the origin and insertion of rhomboid major?

Answer 19

origin: spinous processes of T2-T5

Insertion: Lower vertebral border of scapula

Question 20

what are the main actions of Rhomboid major?

Answer 20

scapular retraction and scapular downward rotation

Question 21

what are the 6 scapulohumeral muscles?

Answer 21

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

Question 22

what shape is the deltoid muscle?

Answer 22

triangular

Question 23

what are the origin and insertion of deltoid?

Answer 23

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

Question 24

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

Answer 24

GH flexion, GH medial rotation, Gh cross flexion

Question 25

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

Answer 25

GH abduction

Question 26

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

Answer 26

GH extension, GH lateral rotation and GH cross extension

Question 27

what is the deltoid innervated by?

Answer 27

axillary nerve

Question 28

what are the origin and insertion of theres major?

Answer 28

origin: inferior angle of the scapula insertion: bicipital groove

Question 29

what are the main actions of Teres Major?

Answer 29

GH adduction, GH extension, GH medial rotation

Question 30

what is the composite action of Teres Major?

Answer 30

Swimming and pull up

Question 31

what is teres Major functionally coupled with?

Answer 31

Latissimus Dorsi

Question 32

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

Answer 32

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

Question 33

what is the origin and insertion of supraspinatus

Answer 33

origin: supraspinous fossa insertion: greater tubercle of the humerus

Question 34

what is the main action of supraspinatus

Answer 34

initiates first 15 degrees of GH abduction

Question 35

what is the origin and insertion of infraspinatus

Answer 35

origin: infraspinous fossa insertion: greater tubercle of humerus

Question 36

what is the main action of infraspinatus

Answer 36

lateral rotation of GH joint

Question 37

what is the origin and insertion of teres minor

Answer 37

origin: axillary border insertion: greater tubercle of the humerus

Question 38

what is the main action of teres minor

Answer 38

lateral rotation of the GH joint

Question 39

what innervates teres minor

Answer 39

axillary nerve

Question 40

what are the origin and insertion of subscapularis

Answer 40

origin: subscapular fossa insertion: lesser tubercle

Question 41

what is the main action of subscapularis

Answer 41

medial rotation of the GH joint