muscles of the back

Question 1

what separates the 2 groups of back muscles

Answer 1

thoracolumbar fascia

Question 2

what are the groups of back muscles

Answer 2

extrinsic and intrinsic

Question 3

what innervates the extrinsic back muscles

Answer 3

-hypaxial, ventral rami of spinal nerves

Question 4

what innervates the trapezius

Answer 4

a cranial nerve

Question 5

what is the function of extrinsic back muscles

Answer 5

move the limbs

Question 6

what is the function of intrinsic back muscles

Answer 6

move the spine

Question 7

what innervates the intrinsic back muscles

Answer 7

-epaxial
-dorsal rami of spinal nerves

Question 8

what are the extrinsic back muscles from superficial to deep

Answer 8

trapezius, latissimus dorsi, levator scapulae, rhomboid minor, rhomboid major, serratus posterior superior, serratus posterior inferior

Question 9

what are the intrinsic back muscles from superficial to deep

Answer 9

iliocostalis, longissimus, spinalis, multifidus, semispinalis, rotatores

Question 10

what muscles make up the erector spinae groupe

Answer 10

iliocostalis, longisimuss, spinalis

Question 11

what muscles make up the transversospinalis group

Answer 11

multifidus, semispinalis, rotatores

Question 12

what is the role of the erector spinae group of muscles

Answer 12

keeps the spine erect and extends the spine

Question 13

what is the role of the transversospinalis group

Answer 13

keeps the spine in line laterally

Question 14

what does the dorsal ramus innervate

Answer 14

intrinsic back muscles and skin of the back

Question 15

what does the ventral ramus innervate

Answer 15

extrinsic back muscles, anterior and lateral trunk and the limbs , this includes the cervical plexus, brachial plexus and the intercostal nerves

Question 16

what do the extrinsic back muscles move

Answer 16

the shoulder and the humerus

Question 17

what is the motor innervation and sensory innervation for the trapezius

Answer 17

motor: spinal accessory nerve
sensory: cervical plexus

Question 18

what is the motor innervation and sensory innervation for the latissimus dorsi

Answer 18

thoracodorsal nerve for both

Question 19

what is the motor and sensory innervation for the levator scapulae

Answer 19

C3 and C4 and dorsal scapular nerve for both

Question 20

what is the motor and sensory innervation for the rhomboid minor

Answer 20

dorsal scapular nerve for both

Question 21

what is the motor and sensory innervation for the rhomboid major

Answer 21

dorsal scapular nerve

Question 22

what is the motor and sensory innervation for the serratus posterior superior

Answer 22

intercostal nerve branches

Question 23

what is the motor and sensory innervation for the serratus posterior inferior

Answer 23

intercostal nerve branches

Question 24

what is another term for extrinsic back muscles

Answer 24

posterior axioappendicular muscles

Question 25

what do the posterior axioappendicular muscles attach

Answer 25

the scapular and humerus to the spine and/or ribs

Question 26

what makes up layer 1 of the extrinsic back muscles

Answer 26

trapezius and latissimus dorsi

Question 27

what does layer 1 of the extrinsic back muscles do

Answer 27

moves the scapula and humerus

Question 28

what makes up layer 2 of the extrinsic muscles of the back

Answer 28

levator scapulae, rhomboid minor, rhomboid major

Question 29

what does layer 2 of the extrinsic back muscles do

Answer 29

move the scapula

Question 30

what makes up layer 3 of the extrinsic back msucles

Answer 30

serratus posterior superior and serratus posterior inferior

Question 31

what does layer 3 of the extrinsic back muscles do

Answer 31

moves the ribs

Question 32

what do intrinsic back muscles do

Answer 32

move the vertebral column and maintain erect posture of the spine, and proprioception

Question 33

describe the location of the intrinsic back muscles

Answer 33

run longitudinally, deep to the serratus posterior muscles and are enclosed by throacolumbar fascia

Question 34

what are the layers of intrinsic muscles of the back from superficial to deep

Answer 34

splenius, erector spinae, and transversospinalis

Question 35

what are the insertion areas of the splenius muscles

Answer 35

capitus and cervicis

Question 36

what are the regions of the iliocostalis muscle

Answer 36

lumborum, thoracis, cervicis

Question 37

what are the regions of the longissimus muscle

Answer 37

thoracis, cervicis, and capitus

Question 38

what are the regions of the spinalis muscle

Answer 38

thoracis and cervicis

Question 39

what are the types of the rotatores muscle

Answer 39

longus and brevis

Question 40

what are the regions of the semispinalis muscle

Answer 40

cervicis and capitus