The Back

Question 0

What is the insertion of the trapezius?

Answer 0

clavicle, scapula, acromion

Question 1

What is the direction and origin of the trapezius?

Answer 1

Superior lateral, EOP (external occipital protuberance), superior nuchal line, nuchal ligament, spinous processes of C7-T12 vertebrae

Question 2

What is the innervation of the trapezius?

Answer 2

spinal accessory nerve XI, C3-C4 shrug some more

Question 3

What are the main actions of the trapezius?

Answer 3

elevation (descending), depression (ascending) and all parts retract scapula, rotate glenoid cavity

Question 4

What is the direction and origin of the latissismus dorsi?

Answer 4

Inferior, iliac crest, 9th-12th ribs, spinous process T7-T12

Question 5

What is the insertion of the latissimus dorsi?

Answer 5

floor of the intertubecular sulcus of the humerus

Question 6

What is the innervation of the latissimus dorsi?

Answer 6

C6-C8 thoracodorsal nerve (make the latts great)

Question 7

What are the main actions of the latissimus dorsi?

Answer 7

extends, adducts, medially rotates shoulder

Question 8

What is the direction and origin of the rhomboid major?

Answer 8

Superior medial, spinous process of T2-T5

Question 9

What is the insertion of the rhomboid major?

Answer 9

medial border of the scapula

Question 10

What is the innervation of the rhomboid major?

Answer 10

dorsal scapular nerve C5

Question 11

What are the main actions of the rhomboid major?

Answer 11

retract scapula and rotate it to depress glenoid cavity

Question 12

What is the origin of the levator scapulae?

Answer 12

C1-C4 posterior tubercles

Question 13

What is the insertion of the levator scapulae?

Answer 13

medial border of scapula

Question 14

What is the innervation of the levator scapulae?

Answer 14

C5 dorsal scapular nerve, C3, C4

Question 15

What is the action of the levator scapulae?

Answer 15

elevates scapula and tilts its glenoid cavity inferiorly by rotating scapula

Question 16

What muscles make up the auscilation triangle?

Answer 16

Rhomboid major, trapezius, lattissimus dorsi

Question 17

What are the errector spinae muscles?

Answer 17

I love spaghetti

iliocostalis, longissimus, spinalis

Question 18

What muscles are in the suboccipital triangle?

Answer 18

Rectus capitis posterior major, Rectus capitis posterior minor, Obliquus capitis superior, Obliquus capitis inferior

Question 19

The erector spinae all originate where?

Answer 19

broad tendon on iliac crest, posterior sacrum, sacro-iliac ligaments, supraspinous ligament

Question 20

Where does the iliocostalis insert?

Answer 20

lumborum, thoracis, cervicis–>fibers run superiorly to angles of lower ribs and cervical transverse processes

Question 21

Where does the longissimus insert?

Answer 21

thoracis, cervicis, capitalis–>fibers run superiorly to ribs between tubercules and angles to transverse processes in thoracic and cervical regions and to mastoid process of temporal bone

Question 22

Where does the spinalis insert?

Answer 22

thoracis, cervicis, capitalis–>fibers run superiorly to spinous processes in upper thoracic region and to cranium

Question 23

What is the nerve supply of the erector spinae?

Answer 23

Poserior rami of the spinal nerves

Question 24

What are the main actions of the erector spinae?

Answer 24

extend vertebral column and head; as back is flexed, control movement by gradually lengthening their fibers laterally flex vertebral column

Question 25

What is the origin of the splenius?

Answer 25

nuchal ligament and spinous processes of C7-T6

Question 26

What is the insertion of the splenius capitis?

Answer 26

fibers run superolaterally to mastoid process of temporal bone and lateral third of superior nuchal line of occipital bone

Question 27

What is the insertion of the splenis cervicis?

Answer 27

tubercules of transverse processes of C1-C3 or C4

Question 28

What is the nerve supply of the splenius?

Answer 28

posterior rami of spinal nerves (like erector spinae)

Question 29

What is the main action of the splenius?

Answer 29

laterally flex neck and rotate head to side of active muscles extend head and neck

Question 30

What are the transversospinales?

Answer 30

some more ragu semispinalis, multifudus, rotatores

Question 31

What is the origin of the semispinalis?

Answer 31

transverse processes of C4-T10

Question 32

What is the insertion of the semispinalis?

Answer 32

fibers run superomedially to occipital bone and spinous processes in upper thoracic and cervical regions

Question 33

What is the nerve supply of the transversospinales?

Answer 33

posterior rami of spinal nerves

Question 34

What is the nerve supply for transversospinales and erector spinae?

Answer 34

posterior rami of the spinal nerves

Question 35

What is the main action of the semispinalis?

Answer 35

extends head and thoracic and cervical regions of vertebral column and rotates them contralaterallly

Question 36

What are the different part of the semispinais?

Answer 36

cervicis, thoracis, capitis

Question 37

What is the origin of the multifundus?

Answer 37

arises from the posterior sacrum, posterior iliac spine of ilium, aponeurosis of erector spinae, sacro-iliac ligaments, mammillary processes of lumbar vertebrae, C4-C7

Question 38

What is the insertion of the multifudus?

Answer 38

fibers pass obliquely superomedially to entire length of spinous processes located 2-4 segments superior to origin

Question 39

What is the main action of the multifidus?

Answer 39

unilateral contraction rotates to contralateral side; stabilize vertebrae during local movements of vertebral column

Question 40

What is the origin of the rotatores?

Answer 40

transverse processes of vertebrae, mostly in thoracic region

Question 41

What is the insertion of the rotatores?

Answer 41

fibers pass superomedially to attach to junction of lamina and transverse process or spinous process of vertebra immediately or two segments suuperior to vertebra of origin

Question 42

What is the main action of the rotatores?

Answer 42

may function as organs of proprioception; possibly stabilize vertebrae and assist with local extension and rotatory movements of vertebral column

Question 60

What are the boundaries of the rectus capitis posterior major and where do they arise from?

Answer 60

Superomedially-->arises from the spinous process of the C2

Question 61

Where does the rectus capitis posterior major insert?

Answer 61

lateral part of the inferior nuchal line of the occipital bone

Question 62

Where does the rectus capitis posterior minor arise from?

Answer 62

posterior tubercle on the posterior arch of C1

Question 63

Where does the rectus capitis posterior minor insert?

Answer 63

medial third of the inferior nuchal line

Question 64

Where does the obliquus capitis inferior originate/what are the contents?

Answer 64

spinous process of C2, inferolaterally

Question 65

Where does the obliquus capitis inferior insert?

Answer 65

transverse process of C1

Question 66

What is the origin/content of the obliquus capitis superior?

Answer 66

superolaterally, transverse process of C1

Question 67

Where does the obliquus capitis superior insert?

Answer 67

occipital bone between the superior and inferior nuchal lines

Question 68

What is the origin of the rhomboid minor?

Answer 68

Nuchal ligament, spinous process of C7-T1

Question 69

What is the insertion of the rhomboid minor?

Answer 69

Triangular area at medial end of scapular spine

Question 70

What is the innervation of the rhomboid minor?

Answer 70

Dorsal scapular nerve, C5