Neck, Back, and Hand Anatomy

Question 1

Erector Spinae

Answer 1

Origin: sacrum
Insertion: ribs, vertebrae, cranium
Action: extension of spine

Question 2

Anterior Scalenes

Answer 2

Origin: TPs of C3-C6
Insertion: rib 1
Action: side bend neck, elevate rib

Question 3

Middle Scalenes

Answer 3

Origin: TPs of C2-C7
Insertion: rib 1
Action: side bend neck, elevate rib

Question 4

Posterior Scalenes

Answer 4

Origin: TPs C5-C7
Insertion: rib 2
Action: side bend neck, elevate rib

Question 5

Splenius Capitis

Answer 5

Origin: nuchal ligament and Sis of C7-T3
Insertion: mastoid process
Action: extend, rotate and laterally flex neck

Question 6

Sternocleidomastoid

Answer 6

Origin: sternum and clavicle
Insertion: mastoid process
Action: rotate, side bend and flex neck

Question 7

Levator Scapulae

Answer 7

Origin: TPs of C1-C4
Insertion: superior border of scapula
Action: elevates scapula

Question 8

Latissimus Dorsi

Answer 8

Origin: SPs of T7-L5, iliac crest, 3 or 4 ribs, inferior angle of scapula
Insertion: bicipital groove of humerus
Action: adducts, internally rotates and extension of arm

Question 9

Rhomboid Minor

Answer 9

Origin: SPs of C7-T1
Insertion: medial scapula
Action: elevates and retracts scapula

Question 10

Rhomboid Major

Answer 10

Origin: SPs of T2-T5
Insertion: medial scapula
Action: elevates and retracts scapula

Question 11

Trapezius

Answer 11

Origin: SPs of C7-T12 and occiput
Insertion: lateral clavicle, acromion process, and spine of scapula
Action: upper-elevates scapula, middle-retracts scapula, lower-depresses scapula

Question 12

Teres Major

Answer 12

Origin: inferior angle of scapula
Insertion: bicipital groove
Action: internal rotation of arm

Question 13

Serratus Anterior

Answer 13

Origin: ribs 1-9
Insertion: anterior scapula
Action: protracts scapula

Question 14

Iliacus

Answer 14

Origin: iliac fossa
Insertion: lesser trochanter
Action: hip flexion

Question 15

Rectus Abdominis

Answer 15

Origin: pubic crest
Insertion: costal cartilage of ribs 5-7, xiphoid process of sternum
Action: flexion of lumbar spine

Question 16

Intercostals

Answer 16

Origin: ribs 1-11
Insertion: ribs 2-12
Action: elevates and depresses ribs

Question 17

Internal Obliques

Answer 17

Origin: inguinal ligament, iliac crest
Insertion: inferior ribs, xiphoid process
Action: rotates abdomen to the same side

Question 18

External Obliques

Answer 18

Origin: lower 8 ribs
Insertion: iliac crest, inguinal ligament
Action: rotates torso

Question 19

Quadratus Lumborum

Answer 19

Origin: iliac crest
Insertion: rib 12 and TPs of lumbar spine
Action: lateral flexion and extension of vertebral column

Question 20

Tranverse Abdominus

Answer 20

Origin: iliac crest, iliolumbar ligament, cartilage of lower 6 ribs
Insertion: xiphoid process, linea alba and pubis
Action: compression of ribs and viscera

Question 21

Flexor Carpi Radialis

Answer 21

Origin: medial epicondyle
Insertion: base of 2nd and 3rd metacarpal
Action: flexion and abduction of wrist

Question 22

Flexor Carpi Ulnaris

Answer 22

Origin: medial epicondyle
Insertion: pisiform, hamate, and 5th metacarpal
Action: flexion and adduction of wrist

Question 23

Extensor Carpi Radialis Brevis

Answer 23

Origin: lateral epicondyle
Insertion: base of 3rd metacarpal
Action: extension of wrist

Question 24

Extensor Carpi Radialis Longus

Answer 24

Origin: lateral epicondyle
Insertion: base of 2nd metacarpal
Action: extension of wrist

Question 25

Extensor Carpi Ulnaris

Answer 25

Origin: lateral epicondyle
Insertion: 5th metacarpal
Action: extension of wrist

Question 26

Palmaris Longus

Answer 26

Origin: medial epicondyle
Insertion: palmar aponeurosis
Action: wrist flexor