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45 notecards = 12 pages (4 cards per page)

Viewing:

Deep Muscles of the Back & Muscles of the Shoulder and Arm

front 1

What innervates the deep muscles of the back? (No exceptions?)

back 1

dorsal rami

deep muscles = erector spinae and some others

front 2

O I A INN of pectoralis minor

back 2

O anterior surface of ribs 3-5

I corocoid process of scapula

A protracts scapula, elevates ribs when scapula is stationary to assist in inhalation

Inn medial pectoral n. (C8-T1)

front 3

O I A Inn of triceps brachii?

back 3

O Long Head: infraglenoid tubercle of scapula

Lateral Head: posterior surface of humerus superior to radial groove

Medial Head: posterior surface of humerus inferior to radial groove

I olecranon process of ulna

A extends forearm - long head resists dislocation of the humerus and extends shoulder joint

Inn radial n (C6-C8)

front 4

What are the posterior muscles from the axial skeleton to the pectoral girdle?

back 4

trapezius, levator scapulae, rhomboid major, rhomboid minor

front 5

O I A INN of trapezius

back 5

O superior nuchal line, external occipital protuberance, ligamentum nuchae, spinous process C7 and T1-T12 vertebrae

I lateral 1/3rd of the clavical, acromion, and spine of scapula

A Descending(upper) - Elevates scapula

Middle - Retracts scapula

•Ascending(lower) - Depresses scapula

Inn motor - accessory n (CN XI)

pain and proprioception - C3, C4 spinal nerves

front 6

Where is the superior nuchal line located?

back 6

On the skull, just superior to the external occipital protuberance

front 7

What is the nuchal ligament?

back 7

The nuchal ligament extends from the external occipital protuberance on the skull and median nuchal line to the spinous process of the seventh cervical vertebra in the lower part of the neck

front 8

O I A INN of levator scapulae

back 8

O transverse process of C1-C4 vertebrae

I vertebral (medial) border of scapula near superior angle

A elevates scapula

INN dorsal scapular n

front 9

Rhomboid major O I A INN

back 9

O spinous processes of T2-T5 vertebrae

I medial border of the scapula from the level of the spine to the inferior angle

A retract scapula and rotate it to depress the glenoid cavity; fix scapula to thoracic wall

Inn dorsal scapular nerve C4 C5

front 10

O I A INN of infraspinatus

back 10

O infraspinous fossa of the scapula

I middle facet of greater tubercle of the humerus

A laterally rotates the arm/shoulder; helps hold humeral head in glenoid cavity

Inn suprascapular n (C4-C6)

front 11

What are the anterior muscles from the axial skeleton to pectroal girdle?

back 11

serratus anterior and pectoralis minor

front 12

O I A INN of serratus anterior

back 12

O lateral surface of ribs 1-8

I anterior surface of medial (vertebral) border of scapula

A protracts scapula, holds scapula against thoracic wall, and rotates scapula

Inn long thoracic n (C5-C7)

front 13

O I A INN of pectoralis minor

back 13

O anterior surface of ribs 3-5

I corocoid process of scapula

A protracts scapula, elevates ribs when scapula is stationary to assist in inhalation

Inn medial pectoral n. (C8-T1)

front 14

What is the result of a paralyzed serratus anterior?

back 14

"winging of the scapula"

scapula is not held to the thoracic wall

front 15

What muscles are from the axial skeleton to the humerus?

back 15

pectoralis major and latissimus dorsi

front 16

O I A Inn of pectoralis major?

back 16

O clavicular head: anterior surface of medial half of clavicle

sternalcostal head: anterior surface of sternum superior six costal cartilages, aponeurosis of external oblique muscles

I lateral lip of intertubercular sulcus of humerus

A adducts arm, medially rotates arm. draws scapula anterior and inferior. acting alone, clavicular head flexes shoulder joint and sternocostal head extends it from flexed position.

Inn medial pectoral n (C8-T1) and lateral pectoral n (C5-C7)

front 17

Which muscle could be referred to as the "boxer's muscle" as it protacts the scapula and rotates the scapula?

back 17

serratus anterior

front 18

O I A Inn of triceps brachii?

back 18

O Long Head: infraglenoid tubercle of scapula

Lateral Head: posterior surface of humerus superior to radial groove

Medial Head: posterior surface of humerus inferior to radial groove

I olecranon process of ulna

A extends forearm - long head resists dislocation of the humerus

Inn radial n (C5-T1)

front 19

Which muscle could be called the handcuff muscle, as making the motion to be handcuffed required adduction of the arm, medial rotation of the arm, and extension of the arm?

back 19

latissimus dorsi

front 20

O I A INN of deltoid

back 20

O lateral 1/3 of clavicle, acromion, and spine of scapula

I deltoid tuberosity of humerus

A anterior part: flexes arm and medially rotates arm

middle part: abducts arm

posterior part: extends and laterally rotates arm

Inn axillary n (C5-C6)

front 21

What are the rotator cuff muscles?

back 21

subscapularis, supraspinatus, infraspinatus, and teres minor

front 22

O I A INN of subscapularis

back 22

O subscapular fossa of scapula

I lesser tubercle of humerus

A medially rotates arms, adducts shoulder joint and holds humerus in glenoid cavity

INN upper subscapular n (C5) and lower subscapular n (C6)

front 23

O I A INN of supraspinatus

back 23

O supraspinous fossa of the scapula

I superior facet og greater tubercle of the humerus

A abducts shoulder - initates before deltoid takes over

Inn suprascapular n (C4-C6)

front 24

O I A INN of infraspinatus

back 24

O infraspinous fossa of the scapula

I middle facet of greater tubercle of the humerus

A laterally rotates the arm/shoulder; helps hold humeral head in glenoid cavity

Inn suprascapular n (C4-C6)

front 25

Which muscle initiates abduction (moves the arm for the first 15 degrees)

back 25

supraspinatus muscle

front 26

After the first fifteen degrees of abduction which muscle takes over from supraspinatus?

back 26

the deltoids

front 27

O I A INN of teres minor

back 27

O lateral border of the scapula

I inferior facet of greater tubercle of the humerus

A laterally rotates the shoulder; helps hold humerus in glenoid cavity

Inn axillary n (C5-C6)

front 28

O I A INN of teres major

back 28

dorsal surface of inferior angle of scapula

crest of lesser tubercle of humerus

Adducts arm, extends arm, medially rotates arm

lower subscapular n (C6)

front 29

O I A INN of teres minor

back 29

O lateral border of the scapula

I inferior facet of greater tubercle of the humerus

A laterally rotates the shoulder; helps hold humerus in glenoid cavity

Inn axillary n (C5-C6)

front 30

what are the muscles of the anterior compartment of the arm?

back 30

coracobrachialis

biceps brachii (long head and short head)

brachialis

front 31

In the biceps brachii, which is more lateral, short or long head?

back 31

long head

front 32

O I A INN of biceps brachii

back 32

O short head: corocoid process of scapula

long head: supraglenoid tubercle of scapula

I radial tuberosity and deep fascia of forearm via bicipetal aponeurosis

A flexes forearm when forearm is supinated, supinates forearm, and slight arm flexion. short head resists dislocation of shoulder.

Inn musculocutaneous n (C5-C7)

front 33

O I A INN of the coracobrachialis

back 33

O coracoid process of the scapula

I medial surface of the middle of the humerus

A flexes arm, adducts arm; resists dislocation of shoulder

Inn musculocutaneous n.

front 34

O I A Inn of brachialis

back 34

O distal half of anterior surface of humerus

I ulnar tuberosity and coranoid process

A flexes forearm in all positions

Inn musculocutaneous n (C5-C7)

front 35

Which muscle can flex the elbow joint whether the hand is pronated or supinated?

back 35

brachialis

front 36

O I A INN of subscapularis

back 36

O subscapular fossa of scapula

I lesser tubercle of humerus

A medially rotates arms, adducts shoulder joint and holds humerus in glenoid cavity

INN upper subscapular n (C5) and lower subscapular n (C6)

front 37

O I A Inn of triceps brachii?

back 37

O Long Head: infraglenoid tubercle of scapula

Lateral Head: posterior surface of humerus superior to radial groove

Medial Head: posterior surface of humerus inferior to radial groove

I olecranon process of ulna

A extends forearm - long head resists dislocation of the humerus

Inn radial n

front 38

O of triceps brachii?

back 38

O Long Head: infraglenoid tubercle of scapula

Lateral Head: posterior surface of humerus superior to radial groove

Medial Head: posterior surface of humerus inferior to radial groove

front 39

During pronation and supination, which bone moves and which bone remains stationary?

back 39

radius moves. ulna remains stationary.

front 40

A muscle attaching to the ulna can flex forearm when hand is supinated, pronated, or both?

back 40

both - example is brachialis

front 41

O I A INN of subclavius m.

back 41

O junction of first rib and its costal cartilage

I inferior surface of middle third of clavicle

A anchors and depresses clavicle

Inn subclavian n.

front 42

O I A INN of anconeous m

back 42

O lateral epicondyle of humerus

I lateral surface of olecranon and superior part of posterior surface of ulna

A assists triceps in extending elbow joint and abducts ulna during pronation

Inn radial n (C5-T1)

front 43

Rhomboid minor O I A INN

back 43

O nuchal ligament spinous processes C7 and T1

I triangular area at the medial end of the scapular spine

A retract scapula and rotate it to depress glenoid cavity. fix scapula to thoracic wall

Inn dorsal scapular nerve (C4,C5)

front 44

Rhomboid major O I A INN

back 44

O spinous processes of T2-T5 vertebrae

I medial border of the scapula from the level of the spine to the inferior angle

A retract scapula and rotate it to depress the glenoid cavity; fix scapula to thoracic wall

front 45

latissimus dorsi O I A IN

back 45

O spinous processes of T6-T12, thoracolumba fascia, iliac crest, ribs 8 or 9 - 12

I floor of intertubercular sulcus of humerus

A extension, adduction, and medial rotation of humerus. raises body toward arms when climbing

In thoracodorsal n (C6-C8)