Upper Extremity Muscles: Arm Bone

Front 1

What are the scapular muscles that move the humerus?

Back 1

1. Deltoid
2. Subscapularis
3. Supraspinatus
4. Infraspinatus
5. Teres Major
6. Teres minor

Hint 1

Did
Someone
Say
It
Takes
Time

Front 2

Help support the shoulder joint by holding the head of the humerus in the glenoid cavity

Back 2

Rotator Cuff=SITS

• Supraspinatus
• Infraspinatus
• Teres Minor
• Subscapularis

Front 3

Which upper extremities insert on the greater tubercle?

Back 3

1. Pectoralis Major
2. Supraspinatus
3. Teres Minor

Front 4

Which upper extremities insert on the biccipital groove?

Also they all have ADduction and medial rotation

Back 4

1. Pectoralis Major
2. Latissimus Dorsi
3. Teres Major

Front 5

ARM BONE

Back 5

Muscles that move the HUMERUS

Front 6

O= Clavicle, sternum, cartilage ribs 2-6

I= Greater tubercle, Bicipital groove of humerus

A= Flexion, medial rotation, adduction of humerus

N= Medial/Lateral Pectoral

notes: Clavicle head flexes arm

Back 6

Pectoralis Major

Front 7

O= Spines t7-t12, sacral crest, ilium

I= Bicipital groove

A= Extends, adducts, medial rotation of humerus

N= Thoracodorsal

notes:Largest muscle in terms of surface area; lays on posterior side of trunk, medial rotation, EXTENDS

Back 7

Latissimus Dorsi

Front 8

What does Abduction of the arm?

Back 8

1. Deltoid
2. Supraspinatus

Front 9

What does Adduction to the humerus?

Back 9

1. Pectoralis Major
2. Teres Major
3. Teres Minor

Front 10

O= Acromial extremity of clavicle; acromion and spine of scapula

I= Deltoid tuberosity of the humerus

A= Abduction arm, flexion, extension, medial laterally rotation of humerus

N= Axillary

notes:3 insertions: anterior, posterior, middle

Back 10

Deltoid

Front 11

O= Supraspinatus fossa

I= Greater tubercle of humerus

A= Abduction of arm at shoulder (assists deltoid)

N= suprascapular

notes: Muscle that passes through supacromial space; initiates AB duction

Back 11

Supraspinatus

Front 12

O= Inferior angle of scapula

I= Bicipital groove

A= Extension, adduction, medially rotates

N= Lower subscapular

notes:Operates in different motion from the minor; internally rotates

Back 12

Teres Major

Front 13

What are the AXIAL muscles that move the humerus?

Back 13

1. Pectoralis Major
2. Latissimus Dorsi

Front 14

O= Inferior lateral border of scapula

I= Greater tubercle

A= Extension, adduction, laterally rotates humerus

N= Axillary

notes: Operates same way as intraspinatus but is not a section of that; laterally rotates

Back 14

Teres Minor

Front 15

FOREARM

Back 15

Muscles that move the RADIUS AND ULNA

Front 16

O= LH: supraglenoid tubercle
SH: coracoids scapula

I= Radial tuberosity, Bicipital aponeurosis

A= Flex humerus, flex forearm, supinates forearm at radioulnar joints, flexes arm at shoulder joint

N= Musculocutaneous

notes: Largest muscle w/2 heads; LH: more lateral with tendon running through bicipital groove then attaching to SG; both heads originate off scapula to humerus

Back 16

Biceps Brachi

Front 17

O= Distal, anterior surface of the humerus

I= Tubercle and coronoid process of ulna

A= Flex forearm

N= Musculocutaneous, radial

notes: Elbow flexion; lies deep to bicep brachii

Back 17

Brachialis

Front 18

O= Supracondyle ridge

I= Styloid process of radius

A= Flex forearm, partially supinates and pronates

N= radial

Back 18

Brachioradialis

Front 19

Which are the forearm flexors?

Back 19

FOREARM=ELBOW
1. Biceps Brachii
2. Brachilalis
3. Brachioradialis

Front 20

What is the forearm extensor?

Back 20

Triceps Brachii
Long head: IG tubercle
lateral head: lateral and post surface of humerus
Medial head: entire posterior surface of humerus

I=Olecranon of ulna

A=extends forearm at elbow joint and extends arm at shoulder joint

Front 21

O=
*LH=infraglenoid tubercle
*Lateral H: lateral and posterior surface of humerus
*Med H: posterior surface of humerus


I= Olecranon

A= Extends forearm, extends humerus

N= radius

Back 21

Triceps Brachii

Front 22

What are the elbow flexors?

Back 22

-Biceps Brachi
-Brachialis
-Brachioradialis

Front 23

Which upper extremities have the RADIAL nerve?

Back 23

1. Brachialis
2. Brachioradialis
3. Triceps Brachii
4. Extensor Carpi Radialis Longus
5. Extensor Digitorum
6. Extensor Pollucis Brevis

Front 24

-4 myo, O and I in hand, act on thumb

-Form flesh part of the hand, composed of 4 muscles; little finger side

-N=Median and Ulnar

Back 24

Thenar

Front 25

-3 myo, O and I in hand, act on little finger

-Do things to the little finger (allow movement)

N=Median and Ulnar

Back 25

Hypothenar

Front 26

3 myo, O and I in hand, act on all fingers

-lies between thenar and hypothenar and work on middle of the first 3 fingers

N=Median and Ulnar

Back 26

Midpalmar