Origins

Question 1

What is the origin of Biceps Brachii (Short Head)

Answer 1

tip of the coracoid process of the scapula

Question 2

What is the origin of Biceps Brachii (Long Head)

Answer 2

supraglenoid tubercle of the scapula

Question 3

What is the origin of Coracobrachialis

Answer 3

coracoid process of the scapula

Question 4

What is the origin of Brachialis

Answer 4

lower half of the anterior surface of the humerus; intermuscular septa

Question 5

What is the origin of Triceps Brachii (Long Head)

Answer 5

infraglenoid tubercle of the scapula

Question 6

What is the origin of Triceps Brachii (Lateral Head)

Answer 6

posterior surface of the humerus above and lateral to the groove of the radial nerve and lateral septum

Question 7

What is the origin of Triceps Brachii (Medial Head)

Answer 7

posterior surface of the humerus below and medial to the groove of the radial nerve and both intermuscular septa

Question 8

What is the origin of Anconeus

Answer 8

lateral epicondyle of the humerus

Question 9

What is the origin of Pronator Teres

Answer 9

medial epicondyle of the humerus ; coranoid process of the ulna

Question 10

What is the origin of Palmaris Longus

Answer 10

medial epicondyle of the humerus (common flexor tendon)

Question 11

What is the origin of Flexor Carpi Radialis

Answer 11

medial epicondyle of the humerus (common flexor tendon)

Question 12

What is the origin of Flexor Carpi Ulnaris

Answer 12

medial epicondyle of the humerus (common flexor tendon) ; proximal 2/3 of the posterior surface of the ulna

Question 13

What is the origin of Flexor Digitorum Superficialis

Answer 13

medial epicondyle of the humerus (common flexor tendon);

medial aspect of the coranoid process of the ulna;

proximal half of the radius distal to the radial tuberosity

Question 14

What is the origin of Flexor Digitorum Profundus

Answer 14

anterior and medial surfaces of the proximal 2/3 of the ulna;

interosseous membrane;

aponeurosis of the flexor carpi ulnaris

Question 15

What is the origin of Flexor Pollicis Longus

Answer 15

anterior surface of the middle half of the radius;

adjacent interosseous membrane

Question 16

What is the origin of Pronator Quadratus

Answer 16

distal fourth of the ulna

Question 17

What is the origin of Brachioradialis

Answer 17

lateral supracondylar ridge of the humerus ; intermuscular septum of the arm

Question 18

What is the origin of Extensor Carpi Radialis Longus

Answer 18

lateral supracondylar ridge and lateral epicondyle of the humerus (common extensor tendon);

intermuscular septum

Question 19

What is the origin of Extensor Carpi Radialis Brevis

Answer 19

lateral epicondyle of the humerus (common extensor tendon); intermuscular septum;
antebrachial fascia

Question 20

What is the origin of Extensor Digitorum

Answer 20

lateral epicondyle of the humerus;

intermuscular septum;

antebrachial fascia

Question 21

What is the origin of Extensor Digiti Minimi

Answer 21

lateral epicondyle of the humerus (common extensor tendon)

Question 22

What is the origin of the Extensor Carpi Ulnaris

Answer 22

lateral epicondyle of the humerus (common extensor tendon),

proximal part of the ulna

Question 23

What is the origin of the Supinator

Answer 23

posterolateral surface of the ulna below the radial notch;

lateral epicondyle ;

radial collateral and annular ligaments

Question 24

What is the origin of the Abductor Pollicis Longus

Answer 24

posterior surface of the ulna and the radius ; interosseous membrane

Question 25

What is the origin of the Extensor Pollicis Brevis

Answer 25

posterior surface of the radius ; interosseous membrane

Question 26

What is the origin of the Extensor Pollicis Longus

Answer 26

posterior surface of the middle third of the ulna, interosseous membrane

Question 27

What is the origin of the Extensor Indicis

Answer 27

posterior surface of the ulna ; interosseous membrane

Question 28

What is the origin of the Lumbricales

Answer 28

tendons of the flexor digitorum profundus

Question 29

What is the origin of the Opponens Pollicis

Answer 29

flexor retinaculum ; trapezium

Question 30

What is the origin of the Flexor Pollicis Brevis (Superficial Head)

Answer 30

flexor retinaculum ; possibly trapezium

Question 31

What is the origin of the Flexor Pollicis Brevis (Deep Head)

Answer 31

trapezoid and capitate

Question 32

What is the origin of the Adductor Pollicis (transverse head)

Answer 32

third metacarpal

Question 33

What is the origin of the Adductor Pollicis (oblique head)

Answer 33

bases of the first three metacarpals, capitate, trapezoid, and trapezium

Question 34

What is the origin of the Palmaris Brevis

Answer 34

palmar aponeurosis medial border

Question 35

What is the origin of the Abductor Digiti Minimi

Answer 35

pisiform

Question 36

What is the origin of the Flexor Digiti Minimi Brevis

Answer 36

flexor retinaculum ; hook of the hamate

Question 37

What is the origin of the Opponens Digiti Minimi

Answer 37

flexor retinaculum ; hook of the hamate

Question 38

What is the origin of the Palmar Interossei

Answer 38

shaft of each metacarpal ; one to each of index, ring, and little fingers

Question 39

What is the origin of the Dorsal Interossei

Answer 39

adjacent surfaces of two metacarpals