Upper Arm

Question 1

Deltoid (O,I,A)

Answer 1

Origin: Spine of scap, Acromion Process, Lat 1/3 of clavicle
Insertion: Deltoid tuberosity of Humerus
Action: ABduction G/H joint
Anterior: flex G/H joint, internally rotate, Horizontal
ADduction
Posterior: extension, Externally rotate, horizontal
ABduction

Question 2

Teres Major (O,I,A)

Answer 2

Origin: Inferior angle of scap, Lower 1/3 of lateral Border of Scap
Insertion: Crest of the lesser tubercle of humerus
Action: ADduction, internal rotation, Extend G/H joint

Question 3

the names of the 4 RTC Muscles

Answer 3

Supraspinatus
Infraspinatous
Teres Minor
Subscapularis

Question 4

Supraspinatus (O,I,A)

Answer 4

Origin:Supraspinous fossa of scap
Insertion: Greater tubercle of humerus
Action: Stabilize, ABduction G/H joint

Question 5

Infraspinatus (O,I,A)

Answer 5

Origin: Infraspinous Fossa of scap
Insertion: Greater tubercle of humerus
Action: external rotation, stabilze, ADduction of G/H joint

Question 6

Teres Minor (O,I,A)

Answer 6

Origin: Upper 2/3 of the Lateral border of the scap
Insertion: Greater Tubercle of Humerus
Action: Stablize, ADduction, external rotation of G/H joint

Question 7

Subscapularis (O,I,A)

Answer 7

Origin: Subscapular fossa of scap
Insertion: Lesser tubercle of humerus
Action: stabilize, Internal Rotation of G/H joint

Question 8

Biceps Brachii (O,I,A)

Answer 8

Origin: Shorthead- Coracoid process of the scapula
Longhead- Supraglenoid tubercle of scapula
Insertion: Radial Tuberosity and bicipital Aponuerosis
Action: Humeroulnar flexion
Radioulnar supination
Glenohumeral flexion

Question 9

Triceps Brachii (O,I,A)

Answer 9

Origin: Longhead- Infraglenoid tubercle of scap
Lateral head- posterior proximal half of humerus
Medial head- posterior distal surface of humerus
Insertion- olecranon process of ulna
Action: Humeroulnar extension (all)
Longhead- extend &ADduct glenohumeral joint

Question 10

Coracobrachialis (O,I,A)

Answer 10

Origin: coracoid process of scap
Insertion: medial mid-shaft of humerus
Action: flex G/H joint, ADduction G/H joint

Question 11

Brachioradialis (O,I,A)

Answer 11

Origin: proximal 2/3 of lateral supracondylar ridge of humerus
Insertion: styloid process of radius
Action: humeroulnar flexion, assist in pronation and supination of radioulnar joints

Question 12

Brachialis (O,I,A)

Answer 12

Origin: distal shaft of anterior humerus
Insertion: tuberosity and coronoid process of ulna
Action : humeroulnar flexion,

Question 13

origin for Common Wrist Extensor Muscle group

Answer 13

Lateral epicondyle of humerus (specifically: common wrist extensor tendon)

Question 14

muscles in the Common wrist extensor group (4 muscles)

Answer 14

Extensor carpi radialis Longus
Extensor carpi radialis brevis
Extensor carpi Ulnaris
extensor digitorum

Question 15

Extensor carpi Radialis Longus (O,A)

Answer 15

Origin: lateral epicondyle
Action: extend radiocarpal joint, ABduct R/C joint (AKA radial deviation), assist in humeroulnar flexion

Question 16

Extensor Carpi Radialis Brevis (O,A)

Answer 16

Origin: lateral epicondyle
Action: extend radiocapal joint, ABduct R/C joint (AKA Radial deviation), assist in humeroulnar flexion

Question 17

Extensor carpi Ulnaris (O,A)

Answer 17

Origin Lateral epicondyle

Action: extend radiocarpal joint, ADduct radiocarpal joint (AKA ulnar deviation)

Question 18

Extensor Digitorum (O,A)

Answer 18

Origin Lateral Epicondyle
Action: assist in extend radioulnar joint, extend 2-5 fingers (AKA digits) in the metacarpophalangel and interphalangel joints

Question 19

Aconeus (O,I,A)

Answer 19

Origin: lateral epicondyle of humerus
Insertion: olecranon process and posterior proximal surface of ulna
Action: extend the humeroulnar joint

Question 20

Origin for the common wrist flexor muscle group

Answer 20

Medial epicondyle of humerus (Specifically the common wrist flexor tendon)

Question 21

The muscles in the common wrist flexor Muscle group (5 muscles)

Answer 21

Flexor Carpi Radialis 
Palmaris Longus
Flexor carpi  Ulnaris
Flexor digitorum superficialis
Flexor Digitorum Profundus

Question 22

Flexor Carpi Radialis (O,A)

Answer 22

Origin: Medial Epicondyle of the Humerus
Action: Flex the radiocarpal joint, ABduct R/C joint (AKA radial deviation), assists in Humeroulnar joint flexion

Question 23

Palmaris Longus (O,A)

Answer 23

Origin: medial epicondyle of humerus
Action: Flexion of radiocapal joint, tense the palmer fascia, assists w/ humeroulnar flexion

Question 24

Flexor Carpi Ulnaris (O,A)

Answer 24

Origin: medial epicondyle of humerus
Action: Flexion of radiocarpal joint, ADduction of radiocarpal joint (AKA ulnar deviation), assists humeroulnar flexion

Question 25

Flexor Digitorum Superficialis (O,A)

Answer 25

Origin: Medial epicondyle of humerus
Action: flex radiocarpal joint, flex fingers 2-5 at the metacarpophalangel and proximal interphalangel joints

Question 26

Flexor Digitorum Profundus (O,A)

Answer 26

Origin: medial epicondyle of humerus
Action: flex radiocarpal joint, flex fingers 2-5 at the metacarpophalangeal and distal interphalangeal joints

Question 27

Pronator Teres (O,I,A)

Answer 27

Origin: common flexor tendon of the medial epicondyle of humerus and coronoid process of the ulna
Insertion: Middle of lateral surface of the radius
Action: Pronate radioulnar joints, and assist in humerulnar joint flexion

Question 28

Pronator Quadratus (O,I,A)

Answer 28

Origin: middle anterior surface of distal ulna
Insertion: Lateral anterior surface of distal radius
Action: Pronate radioulnar joints

Question 29

Supinator (O,I,A)

Answer 29

Origin: Lateral epicondyle of humerus, radial collateral ligament, annular ligament, and supinator crest of the ulna
Insertion: anterior lateral surface of proximal 1/3 of radial shaft
Action: supinate radioulnar joints