Lecture 15: Deep Back Muscles

Question 1

What are epaxial muscles?

Answer 1

spinalis
longissimus
iliocostalis

Question 2

What are hypoxia muscles?

Answer 2

quadratus lumborum
external oblique
internal oblique 
transversus 
rectus abdominus

Question 3

Superficial back muscles connect ____ to axial skelton

Answer 3

limb

Question 4

What are the superficial back muscles innervated by?

Answer 4

ventral rami or CN XI

Question 5

What muscles are superficial back muscles?

Answer 5

trapezius
latissimus dorsi
levator scapulae 
rhomboideus major 
rhomboideus minor

Question 6

Intermediate muscles are ____ muscles

Answer 6

respiratory

Question 7

What are intermediate back muscles innervated by?

Answer 7

ventral rami

Question 8

What muscles make up the intermediate back muscles?

Answer 8

serratus posterior superior

serratus posterior inferior

Question 9

What are the deep back muscles innervated by?

Answer 9

dorsal (posterior) rami

Question 10

What are the three groups of the deep back muscles?

Answer 10

superficial
intermediate
deep

Question 11

What makes up the superficial group of the deep back muscles?

Answer 11

splenius capitis

splenius cervicis

Question 12

What makes up the intermediate group of the deep back muscles?

Answer 12

iliocostalis
longissiumus
spinalis

Question 13

What makes up the deep group of the deep back muscles?

Answer 13

semispinalis
multifundus
rotatores

Question 14

Superficial and intrinsic back muscles are ______ and deep back muscles are ______

Answer 14

extrinsic; intrinsic

Question 15

What is the thoracolumbar fascia?

Answer 15

triangular shaped sheet of tough connective tissue covering lower back

Question 16

Posterior thoracolumbar fascia laminae attaches to ______

Answer 16

lumbar spinous process

Question 17

Middle thoracolumbar fascia laminae attaches to ______

Answer 17

lumbar transverse processes

Question 18

anterior thoracolumbar fascia laminae attaches to ______

Answer 18

attaches to lumbar transverse processes

Question 19

Serratus posterior superior origin

Answer 19

ligamentum niche; spinous processes of C7- T1-2(3)

Question 20

Serratus posterior superior insertion

Answer 20

Ribs 2-5

Question 21

Serratus posterior superior action

Answer 21

elevate upper ribs during inspiration

Question 22

Serratus posterior superior innervation

Answer 22

ventral rami of intercostals (T1- 3(4))

Question 23

Serratus posterior Inferior origin

Answer 23

spinous process of T11-12 and L1

Question 24

Serratus posterior Inferior insertion

Answer 24

Ribs 10(9)-12

Question 25

Serratus posterior Inferior action

Answer 25

pull lower bis inferiorly and counteracts diaphragm

Question 26

Serratus posterior Inferior innervation

Answer 26

ventral rami of intercostals T9-12

Question 27

Superficial intrinsic muscles make up the ______ sytem

Answer 27

spinotransversalis

Question 28

What is the spinotransversalis system?

Answer 28

muscles run laterally and upward to attach to transverse processes and skull

Question 29

What are the two parts of the spinotransversalis system?

Answer 29

splenius capitis | splenius cervices

Question 30

Intermediate intrinsic muscles make up the _____ system

Answer 30

sacrospinalis

Question 31

Sacrospinalis system makes up what group?

Answer 31

erector spinae

Question 32

Deep intrinsic muscles make up the ______ system

Answer 32

transversospinalis

Question 33

muscles in sacrospinalis system

Answer 33

iliocostalis longissimus spinalis

Question 34

What muscles make up the transversospinalis system

Answer 34

semispinalis multifundus rotatores

Question 35

What innervates either side of midline of the cutaneous back

Answer 35

dorsal rami of thoracic spinal nerves

Question 36

Laterally, the cutaneous back is innervated by

Answer 36

lateral cutaneous branches of the intercostal nerves

Question 37

What are the intrinsic muscles of the back innervated by?

Answer 37

dorsal (posterior) rami

Question 38

Splenius capitis origin

Answer 38

spinous processes of C7 and T1-4

Question 39

Splenius capitis insertion

Answer 39

superior nuchal line and mastoid

Question 40

Splenius cervicis origin

Answer 40

spinous processes of T3-6

Question 41

Splenius cervicis insertion

Answer 41

C1-C4 transverse processes with levator scapulae

Question 42

The iliocostalis is the _____ part of the erector spinae group

Answer 42

lateral

Question 43

Action of iliocostalis

Answer 43

extends back; keeps erect posture

Question 44

Components of iliocostalis

Answer 44

lumborum thoracis cervicis

Question 45

iliocostalis origin

Answer 45

ilium and sacrum

Question 46

iliocostalis insertion

Answer 46

most of the ribs

Question 47

Longissimus is the ____ portion of the erector spinae group

Answer 47

middle

Question 48

Components of longissimus

Answer 48

thoracis cervicis capitis

Question 49

Longissimus origin

Answer 49

transverse processes and sacrum

Question 50

Longissimus insertion

Answer 50

most of ribs

Question 51

Spinalis origin

Answer 51

spinous processes of T11-L2

Question 52

Spinalis insertion

Answer 52

spinous process of thoracic and lower cervical vertebrae

Question 53

Components of spinalis

Answer 53

thoracis cervicis capitis

Question 54

What are the components of the semispinalis?

Answer 54

thoracis cervicis capitis

Question 55

Semispinalis cervicis origin

Answer 55

T1-4

Question 56

Semispinalis cervicis insertion

Answer 56

C3-5

Question 57

Semispinalis capitis origin

Answer 57

T1-6 and C4-7

Question 58

Semispinalis capitis insertion

Answer 58

between superior and inferior nuchal lines

Question 59

Multifidus origin

Answer 59

from sacrum and surrounding structures and from transverse processes up to C4, including maxillary processes of lumbar vertebrae

Question 60

multifidus insertion

Answer 60

on spinous processes C2-L5

Question 61

Long rotatores span ____ segments

Answer 61

two

Question 62

Short rotatores span ____ segments

Answer 62

one