Anatomy Flashcards

1
Q

Trapezius OINA

A

Origin – external occipital protuberance, ligamentum nuchae, spinous processes of C7 to T12
Insertion – posterior border of lateral third of the clavicle, acromion process, and spine of the scapula
Innervation – spinal root of the accessory n. CN XI
Action – elevation from the upper fibers, retraction from the middle fibers and depression from the lower fibers

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2
Q

Latissimus Dorsi OINA

A

O – spinous processes of the vertebrae T7-L5, thoracolumbar fascia, iliac crest, inferior 3 to 4 ribs and inferior angle of the scapula
I – medial lip of intertubercular groove of the humerus (anterior to teres major)
N – thoracodorsal n.
A – extends, adducts and medially rotates the humerus, elevates the body when climbing

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3
Q

Levator Scapulae OINA

A

O – posterior tubercles of transverse processes of C1 to C4 vertebrae
I – superior part of the medial border of the scapula
N – dorsal scapular nerve (C4-5)
A – elevates scapula, rotates head to the same side

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4
Q

Rhomboid Major OINA

A

O – spinous process of T2 to T5 vertebrae
I – medial border of the scapula from the level of the spine to the inferior angle
N – dorsal scapular n. (C4-5)
A – retracts and downwardly rotates the scapula

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5
Q

Rhomboid Minor OINA

A

O – spinous processes of C7 and T 1 and the ligamentum nuchae
I – medial border of the scapula from the level of the spine to the inferior angle
N – dorsal scapular n. (C4-5)
A – retracts and downwardly rotates the scapula

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6
Q

Serratus Posterior Superior OINA

A

0 – ligamentum nuchae, spinous process of C7 thru T3
I – 2nd to 5th ribs
N – ventral primary rami of first 3 to 4 thoracic nerves
A – elevates the superior 4 ribs to increase the size of the thorax

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7
Q

Serratus Posterior Inferior OINA

A

0 – spinous processes of T11 thru L2
I – the inferior three or four ribs
N – ventral primary rami of last 4 thoracic nerves
A – depress the inferior 3 to 4 ribs to prevent superior pull by the diaphragm

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8
Q

Organs in RUQ

A

Liver
Gallbladder
Right Suprarenal gland
Right kidney
Superior Ascending colon

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9
Q

Organs in LUQ

A

Spleen
Stomach
Pancreas
Left kidney
Transverse colon
descending colon

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10
Q

Organs in RLQ

A

Cecum
Appendix
Right ovary
Right ureter
Ileum

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11
Q

Organs in LLQ

A

Sigmoid colon
Descending colon
left ovary
left ureter
left spermatic cord

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12
Q

External abdominal oblique OINA

A

0 – external surface of the 5th to 12th ribs
I – linea alba, pubic crest, iliac crest, pubic symphysis
N – Inferior 5 thoracic nerves and subcostal nerve(T12) and iliohypogastric
A – flex and rotate trunk, laterally rotate the trunk, compress abdominal contents

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13
Q

Internal abdominal oblique OINA

A

O – Thoracolumbar fascia, anterior iliac crest, lateral half of inguinal ligament
I – linea alba, pubic crest, ribs 10-12 inferior surface
N – lower 5 thoracic nerves, subcostal, iliohypogastric
A – flex and rotate the trunk, laterally rotate the trunk, compress abdominal contents

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14
Q

Transverse abdominis

A

0 – thoracolumbar fascia, iliac crest, lateral one third of the inguinal ligament, internal
surface of costal cartilage’s 7 to 12
I – linea alba, pubic crest, pubic symphysis
N – lower 5 thoracic nerves, subcostal, iliohypogastric
A – compress and support abdominal viscera

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15
Q

Rectus abdominis OINA

A

0 – pubic symphysis, pubic crest
I – xiphoid process, 5th and 7th costal cartilage’s
N – lower 5 thoracic nerves, subcostal, iliohypogastric
A – flexes trunk and tenses anterior abdominal wall

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16
Q

Psoas Major OINA

A

0 - transverse processes, bodies and intervertebral discs of T12-L5
I - lesser trochanter with iliacus
N - ventral primary rami of L2-L4
A - flexion of the thigh, lateral flexion of the trunk and flexion of the trunk

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17
Q

Psoas Minor OINA

A

0 - bodies of vertebrae T12 and L 1 and the disc in-between
I- pubic bone
N - ventral primary ramus L 1
A - flexion of the pelvis and vertebral column

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18
Q

Iliacus OINA

A

0 - iliac fossa
I - lesser trochanter with psoas major
N - femoral nerve
A - flexion of the thigh

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19
Q

Quadratus Lumborum OINA

A

0 - iliac crest, iliolumbar ligament, and transverse processes of lower Lumbar vertebrae
I - rib 12, transverse process of upper Lumbar vertebrae
N - subcostal and upper lumbar ventral primary rami
A - flexion of the trunk laterally, extend vertebral column, elevate the hip, stabilize 12
rib against inspiration

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20
Q

Levator Ani OINA

A

Consists of three parts
(1) Pubococcygeus
(2) Puborectalis
(3) lIiococcygeus
Origin - body of pubis, obturator fascia, ischial spine
Inserts - coccyx
Innervation - nerve to the levator ani (S3, S4)
Action
(1) Forms a muscular sling for supporting the abdominopelvic viscera
(2) Holds pelvic viscera in position
(3) Assist with abdominoplevic cavity compression, utilized with coughing, sneezing,
vomiting, etc.

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21
Q

Coccygeus OINA

A

O - ischial spine
I - sacrum
N - nerve to the levator ani (S3, S4)
A Supports pelvic viscera, Forms part of diaphragm

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22
Q

Rectus Femoris OINA

A

0 – anterior inferior iliac spine and rim of the acetabulum
I – tibial tuberosity via the patellar ligament
N – femoral nerve
A – flex the hip and extend the knee

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23
Q

Vastus Intermedius OINA

A

0 – anterior surface of the femur
I – tibial tuberosity via the patellar ligament
N – femoral nerve
A – extend the knee

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24
Q

Vastus Lateralis OINA

A

0 – lateral surface of the femur
I – tibial tuberosity via the patellar ligament
N – femoral nerve
A – extend the knee

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25
Vastus medialis oblique OINA
0 – medial surface of the femur and tendon of the adductor magnus I – tibial tuberosity via the patellar ligament N – femoral nerve A – extend the knee (control tracking of patella)
26
Sartorius OINA
0 – anterior superior iliac spine I – superior end of the medial surface of the tibia N – femoral nerve A – flexes and lateral rotates thigh at hip joint, weak abductor of thigh and weak flexor of the leg
27
Pectineus OINA
0 – pectineal line of the superior ramus of the pubis I – pectineal line of the femur N – femoral and obturator nerve A – flex and adduct thigh
28
Gracilis OINA
0 – Inferior ramus of the pubis I – medial surface of tibia, inferior to the condyle N – obturator nerve A – adduct thigh, flex leg
29
Adductor Longus OINA
0 – body of the pubis I – distal 2/3 of the linea aspera N – obturator nerve A – adduct and flex thigh
30
Adductor Magnus OINA
0 – tuberosity and ramus of the ischium I – linea aspera and adductor tubercle N – obturator nerve and tibial portion of the sciatic nerve A – adducts and flexes thigh, extends thigh
31
Adductor Brevis OINA
0 – Inferior ramus of the pubis I – femur N – obturator A – adduct and flex thigh
32
Gluteus Maximus OINA
0 - ilium posterior to posterior gluteal line, sacrum, sacrotuberous ligament I - gluteal tuberosity and iliotibial band N - inferior gluteal nerve A - extends the thigh when running and climbing, sit to stand
33
Piriformis OINA
0 - pelvic surface of the sacrum I - greater trochanter ]N - nerve to piriformis A -lateral rotation and extension of thigh
34
Gluteus Medius OINA
0 - ilium between iliac crest ad superior gluteal line I - greater trochanter N - superior gluteal nerve A -abducts and medially rotates thigh
35
Obturator Internis OINA
0 - obturator membrane I - greater trochanter N - nerve to the obturator internus A - laterally rotates and extends thigh
36
Superior gemellus OINA
0 - ischial spine I - greater trochanter N - nerve to obturator internus A - laterally rotates and extends thigh
37
Inferior Gemellus OINA
0 - ischial tuberosity I - greater trochanter N - nerve to the quadratus femoris A -laterally rotates and extends thigh
38
Quadratus femoris OINA
0 - ischial tuberosity I - intertrochanteric crest N - nerve to the quadratus femoris A - laterally rotates and extends thigh
39
Gluteus Minimus OINA
0 - ilium between superior and inferior gluteal lines I - greater trochanter N - superior gluteal nerve A - abduct and medially rotate the thigh
40
Obturator Externus OINA
0 - obturator membrane I - trochanteric fossa N - obturator nerve A - adduct and laterally rotate the thigh
41
Tensor Fascia Lata OINA
0 -iliac crest I - iliotibial band N - superior gluteal nerve A - abducts and flexes thigh
42
Biceps Femoris OINA
(1) Long head O - ischial tuberosity (2) Short head O -linea aspera I - head of the fibula N -long head by the tibial portion of the sciatic, sh0rt head by the common peroneal portion of the sciatic A - extend thigh and flex leg (knee)
43
Semitendinosus OINA
0 - ischial tuberosity I - medial surface of tibia inferior to the condyle N - tibial portion of sciatic A - extend thigh, flex leg and medially rotate leg
44
Semimembranosus OINA
0 - ischial tuberosity I - medial condyle of the tibia N - tibial portion of sciatic A - extend thigh, flex leg and medially rotate leg
45
Tibialis Anterior OINA
0 - superior 2/3 lateral surface of tibia I - medial cuneiform and base of first metatarsal N - deep peroneal A - dorsiflexion and inversion of foot
46
Extensor Digitorum Longus OINA
0 - superior 2/3 of the fibula I - middle and distal phalanges of the lateral four toes N - deep peroneal A - dorsiflexion of the foot and extension of the toes
47
Extensor Hallucus Longus OINA
0 - superior 2/3 of the fibula I - middle and distal phalanges of the lateral four toes N - deep peroneal A - dorsiflexion of the foot and extension of the toes
48
Peroneus Tertius OINA
0 - distal end of the fibula I - base of the fifth metatarsal N - deep peroneal A - dorsiflexion of the foot and eversion of the foot
49
Extensor Digitorum Brevis OINA
0 - calcaneus I - long extensor tendons of digits 2-4 N - deep peroneal A - extension of digits 2-4
50
Extensor Hallicus Brevis OINA
0 - calcaneus I - base of proximal phalanx of hallux N - deep peroneal A - extension of the toes
51
Peroneus Longus OINA
0 - superior 2/3 of the fibula I - base of the 1 st metatarsal and medial cuneiform N - superficial peroneal A - eversion and plantarflexion of the foot
52
Peroneus Brevis OINA
0 - distal end of the fibula I - base of the 5th metatarsal N - superficial peroneal A - eversion and plantarflexion of the foot
53
Gastrocnemius OINA
0 -lateral head from lateral condyle of femur, medial head from medial condyle of femur I - calcaneus N - tibial nerve A - plantarflexion of foot, flexion of leg (knee)
54
Soleus OINA
0 - posterior surface of fibula and tibia I - calcaneus N - tibial nerve A - plantarflexion of the foot
55
Plantaris OINA
0 - lateral condyle of femur I - calcaneus N - tibial nerve A - plantarflexion of the foot, flexion of leg
56
Flexor digitorum longus OINA
O- tibia I - distal phalanx of lateral four digits N - tibial nerve A - flexion of digits 2-5 and plantarflexion of the foot
57
Flexor digitorum longus OINA
0 - fibula I - distal phalanx of big toe N - tibial nerve A - flexion of hallux and plantarflexion of the foot
58
Tibialis posterior OINA
0 - tibia, fibula and interosseous membrane I - navicular, cuneiform, cuboid and base of the 2nd, 3rd, and 4th metatarsal N - tibial nerve A -inversion and plantarflexion of the foot
59
Popliteus OINA
0 - upper end of tibia I - lateral condyle of femur N - tibial A - rotation of knee joint, knee flexion
60
Abductor hallucis OINA
0 - calcaneus I - proximal phalanx N - medial plantar nerve A - abduct and flex hallux
61
Flexor digitorum brevis OINA
0 - calcaneus I - middle phalanges N - medial plantar nerve A - flexes toes
62
Abductor digiti quinti OINA
0 - calcaneus I - proximal phalanx N - Lateral plantar nerve A - abduct and flex little toe
63
Flexor digitorum longus tendon OINA
0 - tibia I - distal phalanx of lateral four digits N - tibial nerve A - flexion of digits 2-5
64
Flexor hallucis longus tendon OINA
0 - fibula I - distal phalanx of big toe N - tibial nerve A -flexion of hallux
65
Quadratus plantae OINA
0 - calcaneus I - tendon of the flexor digitorum longus N -lateral plantar nerve A - redirect the line of pull of the tendons of the flexor digitorum longus
66
Lumbricals OINA
0 - tendons of the flexor digitorum longus I - dorsal digital expansions N - medial one by the medial plantar nerve, lateral three by the lateral plantar nerve A - flexes the MPJ and extends the proximal IPJ of the lateral four toes
67
Flexor hallucis brevis OINA
0 - cuboid and lateral cuneiform I - Proximal phalanx of the big toe N - medial plantar nerve A -flexes the great toe
68
Flexor digiti quinti OINA
0 - base of the 5th metatarsal I - proximal phalanx of the 5th toe N -lateral plantar nerve A -flex the little toe
69
Adductor hallucis OINA
0 - oblique head: base of the 2nd, 3rd, and 4th metatarsals Transverse head: plantar ligaments of the lateral four MPJ I - proximal phalanx N -lateral plantar nerve A - adducts the great toe, assists in maintaining the transverse arch of the foot
70
Plantar interossei OINA
0 - medial sides of the 3rd, 4th, and 5th metatarsals I - medial sides of the proximal phalanges of the 3rd, 4th, and 5th digits and extensor expansions N - lateral plantar nerve A -adduct to the line of the second toe
71
Dorsal Interossei OINA
0 - adjacent sides of the two metatarsals I - #1 to medial side of the 2nd digit #2 to lateral side of the 2nd digit base of the #3 to lateral side of the 3rd digit proximal phalanx #4 to lateral side of the 4th digit N -lateral plantar nerve A - abducts from line of the 2nd toe
72
External intercostals
(1) 11 pairs of muscles (2) They run obliquely from the rib above to the rib below (3) They run in anterior inferior direction (4) As they reach the costal cartilages they become the external intercostal membrane
73
Internal intercostals
(1) 11 pairs of muscles (2) They lie deep to the external intercostals (3) They run obliquely at right angles to the external intercostals (4) Posteriorly they form the internal intercostal membrane
74
Innermost intercostals
(1) 11 pairs that run similar to the internal intercostals (2) They are separated from the internal intercostals by the intercostal nerves and vessels (3) They cover the middle ¾ of the intercostal space
75
Subcostal muscles
(1) Thin muscular slips that extend from the angle of a rib on the internal surface to internal surface of rib below. (2) They cross two intercostal spaces (3) They run in the same direction as the internal intercostals
76
Transverse thoracis
(1) Four or five muscular slips that arise from the xiphoid and body of the sternum (2) They span superiorly and laterally to the 2nd to 6th costal cartilages
77
Levatores costarum
(1) 12 fan shaped muscles (2) They arise from the transverse processes of C7 to T11 (3) They inferiorly and laterally to insert on ribs below
78
Relation of lungs to thoracic wall
(1) Superior - lung extends through the thoracic inlet as the apex of the lung (2) Anterior - the lung extends down to the 6th costal cartilage (3) mid-axillary - the lung extends down to the 8th costal cartilage (4) posterior - the lung extends down to the 10th or 11th rib
79
Longus Colli superiod oblique OIN
O – anterior tubercles of the transverse processes of C3 to C5 I – Anterolateral surface of anterior tubercle of C1 N – anterior rami of C2 to C4
80
Longus Colli Vertical intermediate
O – anterior aspect of the bodies of C5 to T3 I – anterior aspect of the bodies of C2 to C4 N – anterior rami of C2 to C6
81
Longus Colli inferior oblique
O – anterior tubercles of the transverse processes of C5 and C6 I – anterior aspects of bodies of T1 to T3 N – anterior rami of C5 and C6
82
Rectus capitis anterior OIN
O – anterior surface of the lateral mass and root of the transverse process of C1 I – inferior surface of the basilar part of the occipital bone N – anterior rami of C1 and C2
83
Rectus capitis lateralis OIN
O – superior surface of transverse process of C1 I – inferior surface of the jugular process of the occipital bone N – anterior rami of C1and C2
84
Scalenus Posterior OIN
O – posterior tubercles of transverse processes of C4 to C6 I – outer surface of 2nd rib behind the tubercle and attachment of serratus anterior N – anterior rami of C5 to C7
85
Scalenus medius OIN
O – transverse processes of C1 and C2 and anterior aspect of posterior tubercles of C3 to C7 I – upper surface of 1st rib between the tubercle and groove for the subclavian artery N - anterior rami of C3 to C8
86
Scalenus Anterior OIN
O – musculotendinous fascicles from the anterior tubercles of the transverse processes of C3 to C6 I – to scalene tubercle on the inner border of the 1st rib and a ridge on the upper surface of the rib, anterior to the groove for the subclavian artery N – anterior rami of C4 to C6
87
Longus capitis OIN
O – anterior tubercles of transverse processes of C3 to C6 I – inferior surface of the basilar part of the occipital bone N – anterior rami of C1 to C3
88
Deltoid OINA
O – lateral third of the clavicle, acromion and spine of the scapula I – deltoid tuberosity of the humerus N - Axillary n. A – Anterior part flexes and medially rotates humerus, Middle part abducts the humerus, posterior part extends and lateral rotates the humerus
89
Teres Major OINA
O – Dorsal surface of the inferior angle of the scapula I – Medial lip of the intertubercular groove of the humerus N – Lower subscapular n. A – Adducts and medially rotates, extends arm
90
Supraspinatus OINA
O – Supraspinatus fossa of the scapula I – Greater tubercle of the humerus, superior facet N – suprascapular n. A – abducts the arm and assist with humerus position within the glenoid fossa
91
Infraspinatus OINA
O – Infraspinatus fossa of the scapula I – Greater tubercle of the humerus, middle facet N - Suprascapular n. A - Lateral rotator
92
Teres Minor OINA
O – Superior part of the lateral boarder of the scapula I – Greater tubercle of the humerus, inferior facet N – Axillary n. A –lateral rotator
93
Subscapularis OINA
O – Subscapular fossa I – Lesser tubercle of the humerus N – Upper and lower subscapular n. A – Medially rotates and adducts
94
Pec Minor OINA
0 – Ribs 3 to 5 near the costal cartilages I – Coracoid process of the scapula N – Medial pectoral n. A – Stabilizes scapula against thoracic wall
95
Pec Major OINA
0 – Clavicular Head - Anterior half of the medial aspect of the clavicle Sternocostal Head - Sternum, Superior six costal cartilages, aponeurosis of the external oblique muscle I – Lateral lip of the intertubercular groove of the Humerus N – Lateral and medial pectoral n. A – Adducts and medially rotates humerus
96
Subclavius OINA
0 – Rib, 1 and costal cartilage I – Inferior surface of the middle third of the clavicle N – Nerve to the subclavius A – Anchors and depresses clavicle
97
Serratus Anterior OINA
O – Upper eight ribs I – Anterior surface medial boarder of the scapula N – Long thoracic n. A – protracts and upwardly rotates the scapula
98
Biceps Brachii OINA
Long head 0 – supraglenoid tubercle of the scapula I – tuberosity of the radius and bicipital aponeurosis Short head 0 – coracoid process of the scapula I – tuberosity of the radius and bicipital aponeurosis N – Musculocutaneous nerve A – Flexes and supinates forearm
99
Coracobrachialis OINA
0 – coracoid process of the scapula I – middle third of the medial side of the humerus N – Musculocutaneous nerve A – flexion and adduction of the arm
100
Brachialis OINA
0 – Distal half of anterior surface of the humerus I – coronoid process and tuberosity of the ulna N – Musculocutaneous nerve A – flexes forearm
101
Triceps Brachii OINA
Long head 0 – Infraglenoid tubercle of the scapula Medial head 0 – Posterior surface of the humerus, inferior to the spiral groove Lateral head 0 – Posterior surface of the humerus, superior to the spiral groove I – olecranon process of the ulna N – Radial nerve A – extends the forearm
102
Anconeus OINA
0 – Lateral epicondyle of the humerus I – Lateral surface of the Olecranon process and posterior surface of the ulna N – Radial n. A – extension of the forearm
103
Supinator OINA
0 – Lateral epicondyle of the humerus I – lateral, posterior and anterior surfaces of the proximal third of the radius N – deep branch of the radial nerve A – supinates the forearm
104
Brachioradialis OINA
0 – Proximal two-thirds of the lateral supracondylar ridge of humerus I – lateral surface of the distal end of the radius N – radial nerve A – flexes forearm
105
Pronator teres OINA
0 – Medial epicondyle of the humerus and coronoid process of the ulna I – Middle of lateral surface of the radius N – Median A – pronates and flexes forearm
106
Flexor Carpi Radialis OINA
0 – Medial epicondyle of humerus I – base of the second metacarpal bone N – Median nerve A – Flexes and radial deviates hand
107
Palmaris longus OINA
0 – Medial epicondyle of humerus I – flexor retinaculum and palmar aponeurosis N – Median nerve A – flexes hand
108
Flexor digitorum superficialis OINA
0 – medial epicondyle of the humerus, corocoid process of the ulna and the anterior border of the radius I – Bodies of the middle phalanges of the medial four digits N – Median nerve A – flexes the middle phalanges of the medial four digits, the proximal phalanges and hand
109
Flexor carpi ulnaris OINA
0 – Medial epicondyle of humerus, olecranon and ulna I – Pisiform, hook of the hamate and 5th metacarpal N – Ulnar nerve A – flexes hand, ulnar deviates hand
110
Flexor digitorum profundus OINA
0 – Proximal three-fourths of medial and anterior surface of the ulna and interosseous membrane I – base of the distal phalanges of the medial four digits N – Medial part is ulnar Lateral part is median A – flexes the distal phalanges of the medial four digits
111
Flexor Pollicis longus OINA
0 – Anterior surface of the radius and interosseous membrane I – base of the distal phalanx of the thumb N – Anterior interosseous nerve A – Flexes phalanges of thumb
112
Pronator Quadratus OINA
0 – Distal, anterior surface of ulna I – Distal, anterior surface of the radius N – Anterior interosseous nerve A – Pronates the forearm
113
Abductor Pollicis brevis OINA
O – scaphoid and trapezium I – lateral side of base of proximal phalanx N – Recurrent branch of the Median nerve A – Abducts thumb at carpometacarpal joint
114
Flexor pollicis brevis OINA
O – Flexor retinaculum and trapezium I – lateral side of base of proximal phalanx N – Recurrent branch of the Median nerve A – Flex thumb
115
Opponens pollicis OINA
O – flexor retinaculum and trapezium I – Lateral side of the first metacarpal N – Recurrent branch of the Median nerve A – Oppose thumb
116
Abductor digiti minimi OINA
O – Pisiform I – Base of the proximal phalanx of the 5th digit N – Ulnar nerve A – Abduction
117
Flexor digiti minimi brevis OINA
O – Hamate I – Base of the proximal phalanx of the 5th digit N – Ulnar nerve A – flexes 5th digit
118
Opponens digiti minimi OINA
O – Hamate I – Medial border of 5th metacarpal N – Ulnar nerve A – Oppose the 5th digit
119
Adductor pollicis oblique head OINA
O – carpal bones and bases of metacarpals 2 and 3 I – base of proximal phalanx of thumb N – Ulnar nerve A – Adduct thumb
120
Adductor pollicis transverse head OINA
O – shaft of the 3rd metacarpal I – Base of the proximal phalanx of the thumb N – Ulnar nerve A – Adduct thumb
121
Hand Lumbricals OINA
O – tendons of the flexor digitorum profundus I – lateral side of the extensor expansions N – Lumbricals 1 and 2 - median nerve Lumbricals 3 and 4 - ulnar nerve A – flex the MP joints and extend the proximal IP joints
122
Palmar interossei OINA
O – sides of metacarpal bones I – Base of the proximal phalanges and extensor expansion N – Ulnar nerve A – adduct fingers
123
Hand Dorsal Interossei OINA
O – Arise via two heads from adjacent sides of the metacarpals between which they lie. I – proximal phalanges and extensor expansion N – Ulnar nerve A – Abduct fingers at MP joints
124
Extensor Carpi radialis brevis OINA
O – Lateral epicondyle I – base of the 3rd metacarpal N – Deep radial nerve A – Extends and radial deviates hand
125
Extensor carpi ulnaris OINA
O – Lateral epicondyle I – base of the 5th metacarpal N – Posterior Interosseous nerve A – extends and ulnar deviates the wrist
126
Extensor carpi radialis longus OINA
O – Lateral supracondylar ridge I – base of the 2nd metacarpal N – Radial nerve A – extends and radial deviates hand
127
Extensor digitorum OINA
O – lateral epicondyle of the humerus I – extensor expansions N – Posterior Interosseous nerve A – extend fingers digits 2 through 5
128
Extensor digiti minimi OINA
O – ulnar side extensor digitorum I – extensor expansion of digit 5 N – Posterior Interosseous nerve A – extends the 5th digit
129
Abductor pollicis longus OINA
O – posterior surface of the middle ulna, radius and interosseous membrane I – base of the 1st metacarpal N – Posterior Interosseous nerve A – abducts thumb
130
Extensor pollicis brevis OINA
O – middle one third posterior surface or radius and interosseous membrane I – base of the proximal phalanx of the thumb N – Posterior Interosseous nerve A – extends thumb
131
Extensor pollicis brevis OINA
O – middle one third posterior surface or radius and interosseous membrane I – base of the proximal phalanx of the thumb N – Posterior Interosseous nerve A – extends thumb
132
Extensory pollicis longus OINA
O – Middle one third of the posterior surface of the ulna and interosseous membrane I – base of the distal phalanx of the thumb N – Posterior interosseous nerve A – extends the thumb
133
Extensor indicis OINA
O – posterior surface of the ulna and interosseous membrane I – extensor digitorum tendon to index finger N – Posterior interosseous nerve A – extends the index finger