Muscles-Deep Back

Question 0

Serratus Posterior Inferior

Answer 0

Origin: Spinous Processes of T11-L2
Insertion: Inferior borders of ribs 8-12
Nerve: Intercostal/subcostals

Question 1

Serratus Posterior Superior

Answer 1

Origin: Nuchal ligament, Spinous processes of C7-T3
Insertion: Superior border of ribs 2-4
Nerve: Intercostals T2-5

Question 2

Splenius

Answer 2

Origin: Nuchal ligament, Spinous processes of T1-T6
Insertion: Cervicis-Tubercles of transverse processes of C1-4
Capitis-Lateral mastoid processes/superior nuchal line
Nerve: Dorsal rami of spinal nerves

Question 3

Iliocostalis

Answer 3

Origin: Most lateral portion of erector spinae group
Insertion: Thoracis-Superior band like portion
Lumborum-Thick trunk near lumbar region
Nerve: Dorsal rami of spinal nerves

Question 4

Longissimus

Answer 4

Origin: Middle portion of erector spinae group
Insertion: Capitis-Superior portion near occipital region
Cervicis-Middle portion near cervical region
Thoracis-Runs along thoracic/lumbar regions
Nerve: Dorsal rami of spinal nerves

Question 5

Spinalis

Answer 5

Origin: Medial portion of erector spinae group
Insertion: Thoracis-Across thoracic spinal region
Nerve: Dorsal rami of spinal nerves

Question 6

Semispinalis

Answer 6

Origin: Run superomedially from transverse processes to spinous processes
Insertion: Capitis-Most superior, near occipital region
Cervicis-Middle portion, near cervical region
Thoracis-Most inferior, near thoracic region
Nerve: Dorsal rami of spinal nerves

Question 7

Multifidus

Answer 7

Origin: Transverse processes from sacrum to C2
Insertion: Spinous processes
Nerve: Dorsal rami of spinal nerves

Question 8

Rotatores

Answer 8

Brevis-Transverse process of one vertebra to spinous process of next vertebra
Longus-Transverse process of one vertebra to spinous process of 2nd vertebra above
Nerve: Dorsal rami of spinal nerves

Question 9

Interspinales

Answer 9

Origin: Spinous process of one vertebra
Insertion: Spinous process of next vertebra
Nerve: Dorsal rami of spinal nerves

Question 10

Intertransversari

Answer 10

Origin: Transverse process of one vertebra
Insertion: Transverse process of next vertebra above
Nerve: Dorsal/ventral rami of spinal nerves

Question 11

Levator Costarum

Answer 11

Origin: Posterior end of rib
Insertion: Transverse process of next vertebra above
Nerve: Dorsal/ventral rami of spinal nerves