Muscles Of Upper Limb Part 1

Front 1

Superficial Back Muscles

Back 1

1. Trapezius

2. Latissimus Dorsi

3. Levator Scapulae

4. Rhomboid Minor

5. Rhomboid Major

Hint 1

Tiny Little Liars Reap Rewards

Front 2

Trapezius

Back 2

O: Superior nuchae line of occipital bone, ligamentum nuchae, Spinous processes of CVII to TXII

I: Sperior edge of crest of spine of the scapula, acromion, posterior border of lateral 1/3rd of clavicle

N: Motor: Accessory nerve (XI) Sensory: Anterior rami of C3 to C4

F: Upper fibers elevate scapula with abduction of humerus above horizontal. Middle: Retract scapula. Lower, Pull medial border of scapula upward

Front 3

Latissimus Dorsi

Back 3

O: Posterior portion of the iliac crest; thoracolumbar fascia; spinous prcesses of the lowest 6 throacis vertebrae, sometimes from lowest 3 or 4 ribs and infeiror angle of scapula

I: Floor of the bicipital groove of the humerus (upper fibers found deep to lower border of trapezius muscle)

N: Thoracodorsal Nerve (C6, C7, C8)

F: Adduction, medial rotation, and extension of the arm at the glenohumeral joint.

Front 4

Levator Scapulae

Back 4

O: Transverse processes of the first 4 cervical vertebrae

I: Medial border of the scapula between the base of the spine and the superior angle.

F: Elevates the scapula

N: Anterior rami of C3 and C4 spinal nerves and by brances (C5) from the dorsal scapular nerve

Front 5

Rhomboid Minor

Back 5

O: Lower part of the ligamentum nuchae and the spinous processes of the 7th cervical and 1st thoracic vertebrae

I: Medial border from the scapula immediately medial to the root of the spine of the scapula

F: Pull scapula medially and upward

N: Dorsal Scapular nerve (C4, C5)

Front 6

Rhomboid Major

Back 6

O: Spinous processes of the 2nd to the 5th thoracic vertebrae

I: Medial border of the scapula, between the root of the spine and the inferior angle of the scapula

F: Pull scapula medially and upward

N: Dorsal scapular nerve (C4, C5)

Front 7

SHOULDER MUSCLES

Back 7

1. Deltoid

2. Supraspinatus

3. Infraspinatus

4. Subscapularis

5. Teres Minor

6. Teres Major

Hint 7

Devouring Syphalis Is Sometimes Too Tempting

Front 8

Deltoid

Back 8

O: Spine of scapula, acrominon process and lateral third of clavicle

I: Deltoid tuberosity of humerus

F: Anterior fibers flex and medially rotate arm. Posterior fibers extend and laterally rotate arm.

N: Axillary nerve

Front 9

Supraspinatus

Back 9

O: suprispinous fossa of scapula

I: greater tubercle of humerus, capsule of shoulder joint

F: Initiation of abduction of arm to 30 degrees at glenohumeral joint

N: Suprascapular Nerve

Front 10

Infraspinatus

Back 10

O: Infraspinous fossa of scapula

I: greater tubercle of humerus and on capsule of shoulder joint

F: Laterally rotates the arm and stabilizes the shoulder joint.

N: Suprascapular nerve

Front 11

Subscapularis

Back 11

O: Subscapular fossa of scapula

I: lesser tuberosity of humerus

F: Medially rotates the arm and stabilizes the shoulder

N: Upper and lower subscapular nerves

Front 12

Teres Minor

Back 12

O: Upper 2/3rds of lateral border of the scapula

I: greater tubercle of humerus and capsule of shoulder joint

F: Lateral rotation of arm at the glenohumeral joint

N: Axillary nerve

Front 13

Teres Major

Back 13

O: Latter 1/3rd of lateral border of scapula

I: Medial lip of the bicipital groove of humerus

F: Medial rotation and extension of the arm at the glenohumeral joint

N: Inferior subscapular nerve (C5, C6, C7)

Front 14

Spaces of the shoulder region

Back 14

1. Quadrangular space

2. Triangular Space

Def: hypothetical spaces, allow for veins, arteries and nerves to pass through

Front 15

Quadrangular Space Boundaries

Back 15

Superiorly: Teres minor

Inferiorly: Teres major

Laterally: surgical neck of humerus

Medially: Long head of the triceps

Front 16

Structures passing through quadrangular space

Back 16

Axillary nerve, posterior circumflex humeral vessels (artery and nerve)

Front 17

Triangular space boundaries

Back 17

Superiorly: Teres minor

Inferiorly: Teres major

Laterally: long head of biceps brachii

Front 18

Structures passing through triangular space

Back 18

circumflex scapular artery and vein