Muscles first semester.

Question 1

Where does the trapezius attach?

Answer 1

EOP to SP of T12
Superior Nuchal line
Ligamentum nuchae
Lateral 1/3 of clavicle
Acromion process

Question 2

Nerve supply to Trapezius?

Answer 2

Motor supply via cranial nerve XI

Sensory supply from the ventral rami(branch) of C3 and C4 via the cervical plexus.

Question 3

Function of trapezius?

Answer 3

• the middle fibers retract the scapula
• the upper fibers elevate the pectoral girdle.
• Bilateral contraction of the upper trapezius results in extension of the neck.
• The lower fibers pull down the medial part of the scapula and depress the scapula. ‘
• Upper and lower produce lateral (external) rotation of the scapula.
• Stabilizes the scapula to allow free movement of the upper limb.

Question 4

Latissimus dorsi is inverted by?

Answer 4

the Thoracodorsal nerve C6, C7 and C8.

Question 5

Where does Latissimus dorsi attach?

Answer 5

Twist and attach to floor of bicipital groove
Inferior angle of scapula
T7 SP to S5 tubercles 
Lower 3 or 4 ribs 
Supraspinus and interspinus ligaments
Iliac crest

Question 6

how does the latissimus dorsi move our arm?

Answer 6

Strong extensor, adductor and medial rotator of the humerus at the shulder joint.

Question 7

If your arms are fixed, how does the lattisimus dorsi move your body?

Answer 7

it acts to retract the pectoral gridle.
Also functions in active expiration (e.g. coughing, sneezing.)
Latissimus dorsi is active in climbing, chinups, rowing, swiming and using crutches.

Question 8

Where does Levator scapulae attach?

Answer 8

TVP of upper 3-4 cervical vertebrae,

medial border of the scapula (between the superior angle and the base of the spine of the scapula).

Question 9

Which nerves innervate the levator scapula.

Answer 9

Levator scapula is innervated by the dorsal scapular nerve (C5) and ventral rami of C3 and C4.

Question 10

Where does Rhomboid minor attach?

Answer 10

C7 and T1 spinus processes + supraspinus ligament

laterally to the root of the spine of scapula.

Question 11

Where does Rhomboid major attach?

Answer 11

T2 SP to T5SP (and supraspinus ligament inbetween)

Medial border of the scapula.

Question 12

Both Rhomboid Minor and Major are innervated by?

Answer 12

Both Rhomboid Minor and Major are innervated by the dorsal scapular nerve (mainly C5 spinal nerve, also sometimes C4)

Question 13

Seratus posterior superior insertion?

Answer 13

inferior ligamentum nuchae
c7-t3 SP

Attatches to lateral angle of 2nd to 5th ribs.

Question 14

Seratus posterior inferior insertion?

Answer 14

T11-L2 SP

attaches to angle of the 9th to 12th rib

Question 15

Serratus posterior superior nerve inervation?

Answer 15

Ventral rami of T2 - T5 spinal nerve

Question 16

Serratus posterior superior function?

Answer 16

Assist inspiration by elevating 2nd - 5th rib.

Question 17

Seratus posterior inferior nerve inervation?

Answer 17

Ventral rami of T9 - T12

Question 18

Seratus posterior inferior function?

Answer 18

lower rib 9-12, may assist with forced expiration.

Question 19

Muscle of the first layer Vertebral columm

Answer 19

Trapezius + Latissimus dorsi

Question 20

Muscle of the second layer Vertebral columm

Answer 20

Levator scapulae + Rhomboid minor + rhomboid major

Question 21

Muscle of the third layer Vertebral columm

Answer 21

Serratus Posterior superior + serratus posterior inferior

Question 22

Muscle of the fourth layer Vertebral columm

Answer 22

Splenius capitis + Splenius cervicis

Question 23

Splenius capitis insertion?

Answer 23

inferior half of ligamentum nuchae and sp of C7-T3(4) attach to mastoid process + lateral third of the superior nuchal line.

Question 24

Splenius capitis nerve inervation?

Answer 24

Lateral branches of the dorsal rami of C3, C4 and C5

Question 25

Splenius capitis function?

Answer 25

Extension + rotation.

Question 26

Splenius cervicis insertion?

Answer 26

SP T3-T6 attach to TVP C1-C4

Question 27

Splenius Cervicis nerve inervation?

Answer 27

Lateral branches of the dorsal rami of the C5-C7

Question 28

Splenius Cervicis function?

Answer 28

Lateral flexion and slight flexion. Bilateral=neck extension.

Question 29

iliocostalis lumborum insertion?

Answer 29

Inferior border of lower 6 ribs

Question 30

Iliocostalis thoracis insertion?

Answer 30

Medial to iliocostalis lumborum, and attach to the angle of upper 6 ribs and C7 TVP

Question 31

Iliocostalis Cervics insertion?

Answer 31

Arise medial to iliocostalis thoracis and attach superior to C7-C4 transeverse processes

Question 32

Lateral colum consist of?

Answer 32

Iliocostalis Lumborum
Iliocostalis Thoracis
Iliocostalis cervics

Question 33

Intermediate colum consist of?

Answer 33

Longissimus thoracis
Longissimus cervicis
Longissimus Capitis

Question 34

Longissimus Thoracis attachment?

Answer 34

Arise from lumbar transverse and accessory processes and thorocolumbar facia and attach to thoracic TVP and 3rd to 12th rib

Question 35

Longissimus cervics attachment

Answer 35

T1 to T6 tvp to C2-C6 posterior tubercle of TVP

Question 36

Longissimus capitis attachment

Answer 36

T1-T5 TVP (With longissimus cervics) and C4 - C7 articular process + mastoid process

Question 37

Medial colum consist of?

Answer 37

Spinalis Thoracis
Spinalis Cervicis
Spinalis Capitis

Question 38

Spinalis thoracis attachment?

Answer 38

SP of T11-L2 to SP of T1-T6

Question 39

Spinalis cervicis attachment

Answer 39

C7 (T1,T2) SP - C2 SP

Question 40

Spinalis Capitis attachment

Answer 40

Poorly developed and often blend with the adjacent cervical muscles (particulary semispinalis capitis)

Question 41

Erector spinae nerve innervation?

Answer 41

All are supplied by adjacent dorsal rami (Lateral branches) according to their location.