Muscles of the spine

Question 1

• Inferior ligamentum nuchae (an extension of the supraspinous ligament into the cervical spine)
• SPs of C7-T3
• Respective supraspinous ligaments (a ligament that run between the SPs)

Answer 1

Serratus Posterior Superior - origin

Question 2

• upper border of ribs 2-5 (lateral to their angles)

Answer 2

serratus posterior superior - insertion

Question 3

elevate ribs 2-5

Answer 3

serratus posterior superior - action

Question 4

depress ribs 9-12 (when diaphragm contracts, holds ribs in place)

Answer 4

serratus posterior inferior - action

Question 5

• SPs of T11-L3

- respective supraspinous ligs

Answer 5

serratus posterior inferior - origin

Question 6

O: SPs of T3-T6
I: TPs of C1-C3
A: 
- bi: EXT head and neck
- uni: assists w lat flex and ROT to the same side

Answer 6

splenius cervicis - O/I/A

Question 7

lower border of ribs 9-12 (lateral to their angles)

Answer 7

serratus posterior inferior - insertion

Question 8

O: angles of ribs 3-6
I: TPs of C4-C6
A: neck EXT and side flexion to the same side, elevates ribs 3-6 (when spine is fixed)

Answer 8

Iliocostalis cervicis (OIA)

Question 9

O: angles of lower 6 ribs
I: angles of upper 6 ribs
A: back EXT (through pull on ribs)

Answer 9

iliocostalis thoracis (OIA)

Question 10

O: post iliac crest, median and lateral sacral crests, SPs of T11-L5 (&supraspinous lig)
I: post surface of lower 6 ribs
A: back EXT, depresses ribs 7-12

Answer 10

iliocostalis lumborum (OIA)

Question 11

O: TPs of T1-T5, articular processes (SAP/IAP) of C4-C7
I: posterior margin of mastoid process
A: 
bi: neck EXT
uni: neck side flex

Answer 11

longissimus capitis (OIA)

Question 12

O: TPs of T1-T5
I: TPs of C2-C6
A:
bi: neck EXT
uni: neck side flex

Answer 12

longissimus cervicis (OIA)

Question 13

O: TLF (ant layer (?), TPs and accessory processes of L-spine
I: TPs of T1-T12, and lateral to the tubercles of ribs 4-12
A:
bi: back EXT
uni: trunk side flexion

Answer 13

longissimus thoracis (OIA)

Question 14

O: inferior ligamentum nuchae, and SPs of C7-T2
I: SPs of C2-C4
A: neck EXT

Answer 14

spinalis cervicis (OIA)

Question 15

O: SPs of T11-L2
I: SPs of T1-T8
A: trunk EXT (postural)

Answer 15

spinalis thoracis (OIA)

Question 16

O: TPs of T1-T7, and articular processes of C4-C6
I: occipital bone, between sup and inf nuchal lines
A:
bi: neck EXT
uni: neck ROT to the OPPOSITE side

Answer 16

semispinalis capitis

Question 17

O: TPs of T1-T6
I: SPs of C2-C7
A: 
bi: neck EXT
uni: neck ROT to OPPOSITE side

Answer 17

semispinalis cervicis (OIA)

Question 18

O: TPs of T6-T10
I: SPs of C6-T4
A: 
bi: back EXT
uni: trunk ROT to opposite side

Answer 18

semispinalis thoracis (OIA)

Question 19

O: TPs of designated region (cervical, thoracic, lumbar)
I: 
brevis: SP of vertebrae above
longus: SP of 2 vertebrae above
A: 
uni: back EXT
bi: Trunk ROT to opposite side

Answer 19

rotatores (cervicis, thoracis, lumborum)(OIA)

Question 20

O: common origin = TFL
lumbar: mammillary processes and SAPs/IAPs
thorasic: TPs
cervical: SAPs/IAPs
I: base of an SP, 2-4 vertebrae above (from C2-L5)
A: 
bi: back EXT
uni: trunk ROT to opposite side

Answer 20

Multifidus (OIA)