Back and abdominals

Question 1

Longissimus dorsi 
(Cervicis)

Answer 1

O- TP's T1-7
I- TP'S C4-7
In- Dorsal br. of local spinal n
F- Extends neck and back
     Stabilises V. column

Question 2

Longissimus dorsi
(Thoracis & Lumbar)

Answer 2

O- Wing of ilieum
      SP's of sacral, lumbar and thoracic vertebra
I- TP's & Mamillary proc C4-7
   Tubercles of ribs
In- Dorsal branches of local spinal n
F- Extends neck and back
    Stabalises V. column

Question 3

Longissimus dorsi
(Atlantal & Capatis)

Answer 3

0- TP's T1-2 & Art. proc C3-7
I- Wing of atlas & Mastoid proc. of temp bone
In- Dorsal br. of local spinal n
F- Elevates head 
    Laterally bends head and neck

Question 4

Spinalis

Answer 4

O- SP's of lumbar
     Last 6 Thor. Vertebra
I- SP's T1-6/7 & C3-7
In- Dorsal br. of local spinal n
F- Stabilise back & neck
    Elevate and laterally bend head and neck

Question 5

Semispinalis capitis

Answer 5

O- TP’s of T1-6/7 & Art, proc C2-7
I- Occipital bone
In- Dorsal branches of local spinal n
F- Elevate and laterally bend head & neck

Question 6

Multifidus

Cervicis/ Thoracis/ Lumborum

Answer 6

O- Articular & Mamillary proc. ALL vertebra (C2 to Sacrum)
I- SP's of proceeding vertebrae
In- Dorsal br. of local spinal n
F- Stabilise and twist V. column
    Elevates neck

Question 7

Intertransversarii

Answer 7

O- Between TP’s and Art, proc of cervical and tail V.
I- (same as origin)
In- Dorsal br. of local spinal n
F- Stabilises V. column & laterally bends

Question 8

Sacrocaudalis Dorsalis

Medialis & Venteralis

Answer 8

O- Sacrum
I- SP’s and TP’s & Mam. P’s of caudal V.
In- Dorsal & Ventral br of spinal n
F- Elevates, flexes and laterally bends tail

Question 9

Scalenus

Answer 9

O- First rib
I- TP's C4-7
In- Ventral br of local spinal n
F- Flexes and laterally bends neck
    (aid inspiration- elevate first rib)

Question 10

Serratus dorsalis CAUDALIS

Answer 10

O- Thoracolumbar fascia
I- Caudal border of ribs 11-18
In- Intercostal n
F- Expiratory muscle

Question 11

Intercostalis INTERNUS

Answer 11

O- Cranial border of ribs
I- Caudal border of ribs
In- Intercostal n
F- Expiratory muscle

Question 12

Intercostalis EXTERNUS

Answer 12

O- Cranial border of ribs
I- Caudal border of ribs
In- Intercostal n
F- Inspiratory muscle

Question 13

Serratus dorsalis CRANIALIS

Answer 13

O- Supraspinous lig (via thoraclumb. fascia)
I- Cranial borders of ribs 5-11
In- Intercostal n
F- Inspiratory muscle

Question 14

Retractor costae

Answer 14

O- Thoracolumbar fascia
I- Caudal border of last rib
In- Lumbar n
F- Expiratory muscle
    (Belongs in group of intercostalis internus m)

Question 15

Obliquus abdominis EXTERNUS

Answer 15

O- Lateral surface ribs 4-18
     Thoracolumbar fascia
I- Abdominal tendon
   Linea alba
   Prepubic tendon
   Pelvic tendon
   Tuber coxae
   Inguinal lig
In- Local intercostal & Ven. br of lumbar n
F- Compress abdominal viscera (expiration)
    Flexes trunk

Question 16

Obliquus abdominis INTERNUS

Answer 16

O- Tuber coxae & adjacent inguinal lig
I- Last rib
   Cartilages of last 5 ribs
   Linea alba
   Prepubic tendon
In- Local intercostal and Vent. br of lumbar n

Question 17

Transverse abdominis

Answer 17

O- Medial surface of costal cartilages 7-18
Lumbar TP’s
I- Linea alba
In- Local intercostal & Vent. br of lumbar n
F- Compress abdominal viscera (expiration)
Flexes trunk

Question 18

Rectus abdominus

Answer 18

O- Lateral surface of costal cartilages 4-9
I- Prepubic tendon
Via accessory lig on head of femur
In- Local intercostal & Vent. br of lumbar n
F- Flex lumber spine & lumbosacral joint
Compress abdominal viscera
Flex trunk